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List of Figures

I Command format. ................................................................................................................... 1-lxxxi

1-1 Using the question mark character (?) to display help for the current command. ..................... 1-121-2 A typical login session for user BRUCE on router CMD. ............................................................... 1-151-3 The editor screen layout.............................................................................................................. 1-311-4 Logging in to the router from a web browser.............................................................................. 1-321-5 Router startup messages. ............................................................................................................ 1-411-6 Example output from the DUMP command................................................................................. 1-681-7 Example output from the DUMP NVS command.......................................................................... 1-691-8 The editor screen layout.............................................................................................................. 1-711-9 Example output from the SHOW ALIAS command..................................................................... 1-1051-10 Example output from the SHOW BUFFER command. ................................................................. 1-1061-11 Example output from the SHOW BUFFER SCAN command. ....................................................... 1-1071-12 Example output from the SHOW BUFFER SCAN command for a specified address..................... 1-107

1-13 Example output from the SHOW BUFFER SCAN QUEUEPOINTERS command. ............................ 1-1081-14 Example output from the SHOW CONFIG command. ................................................................ 1-1081-15 Example output from the SHOW CPU command. ...................................................................... 1-1101-16 Sample output from the SHOW DEBUG STACK command after a software reboot. .................. 1-1121-17 Sample output from the SHOW DEBUG STACK command after a hardware reset. ................... 1-1121-18 Example output from the SHOW EXCEPTION command. ........................................................... 1-1131-19 Example output from the SHOW FEATURE command................................................................ 1-1141-20 Example output from the SHOW FEATURE command for a specified special feature licence....... 1-1151-21 Example output from the SHOW FFILE command. ..................................................................... 1-1161-22 Example output from the SHOW FILE command........................................................................ 1-1171-23 Example output from the SHOW FLASH command.................................................................... 1-1181-24 Example output from the SHOW FLASH PHYSICAL command. .................................................. 1-1191-25 Example output from the SHOW GUI command........................................................................ 1-1201-26 Example output from the SHOW HTTP CLIENT command. ......................................................... 1-1211-27 Example output from the SHOW HTTP DEBUG command.......................................................... 1-1221-28 Example output from the SHOW HTTP SERVER command. ........................................................ 1-1231-29 Example output from the SHOW HTTP SESSION command........................................................ 1-1251-30 Example output from the SHOW INSTALL command after a new release file is installed............. 1-1261-31 Example output from the SHOW LDAP command. .................................................................... 1-1271-32 Example output from the SHOW LDAP REQUEST command. ..................................................... 1-1281-33 Example output from the SHOW LOADER command................................................................. 1-1291-34 Example output from the SHOW MAIL command...................................................................... 1-1301-35 Example output from the SHOW NVS command. ...................................................................... 1-1331-36 Example output from the SHOW NVS FREE command. .............................................................. 1-1331-37 Example output from the SHOW PATCH command................................................................... 1-134

1-38 Example output from the SHOW RADIUS command.................................................................. 1-1351-39 Example output from the SHOW RELEASE command. ............................................................... 1-1361-40 Example output from the SHOW STARTUP command................................................................ 1-136
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Software Release 2.4.1C613-03047-00 REV A

1-41 Example output from the SHOW SYSTEM command................................................................. 1-1371-42 Example output from the SHOW TACACS SERVER command.................................................... 1-1401-43 Example output from the SHOW USER command...................................................................... 1-1411-44 Example output from the SHOW USER CONFIGURATION command.......................................... 1-1431-45 Example output from the SHOW USER RSO command. ............................................................. 1-145

2-1 Format of an Ethernet frame......................................................................................................... 2-72-2 Format of an Ethernet frame with SNAP encapsulation.................................................................. 2-92-3 Example output from the SHOW ETH CONFIGURATION command.............................................. 2-452-4 Example output from the SHOW ETH COUNTER=COLLISION command. ..................................... 2-462-5 Example output from the SHOW ETH COUNTER=DIAGNOSTIC command for

68360-based hardware............................................................................................................... 2-472-6 Example output from the SHOW ETH COUNTER=DIAGNOSTIC command for

SONIC-based hardware............................................................................................................... 2-472-7 Example output from the SHOW ETH COUNTERS=DIAGNOSTIC command for

M860F-based hardware. ............................................................................................................. 2-482-8 Example output from the SHOW ETH COUNTERS=DIAGNOSTIC command for

79C972-based hardware. ........................................................................................................... 2-482-9 Example output from the SHOW ETH COUNTER=DOT3STAT command. ..................................... 2-51

2-10 Example output from the SHOW ETH COUNTER=INTERFACE command. ..................................... 2-522-11 Example output from the SHOW ETH MACADDRESS command.................................................. 2-532-12 Example output from the SHOW ETH RECEIVE command............................................................ 2-542-13 Example output from the SHOW ETH STATE command for 68360-based or

SONIC-based hardware............................................................................................................... 2-542-14 Example output from the SHOW ETH STATE command for 100Mbps interfaces in the

default configuration (with link speed auto-negotiation enabled). ............................................... 2-552-15 Example output from the SHOW ETH STATE command for 100Mbps interfaces with link

speed set manually. .................................................................................................................... 2-552-16 Example output from the SHOW INTERFACE command............................................................... 2-572-17 Example output from the SHOW INTERFACE command for a specific interface............................ 2-582-18 Example output from the SHOW INTERFACE COUNTER command. ............................................. 2-60

2-19 Example output from the SHOW ASYN command....................................................................... 2-622-20 Example output from the SHOW ASYN COUNTER command. ..................................................... 2-652-21 Example output from the SHOW ASYN HISTORY command. ....................................................... 2-662-22 Example output from the SHOW ASYN SUMMARY command..................................................... 2-662-23 Example output from the SHOW SYN command. ........................................................................ 2-682-24 Example output from the SHOW SYN COUNTER=INTERFACE command...................................... 2-692-25 Example output from the SHOW SYN COUNTER=SYN command for 68302- and

68360-based synchronous interfaces. ......................................................................................... 2-712-26 Example output from the SHOW SYN COUNTER=SYN command for 68562-based

synchronous interfaces................................................................................................................ 2-72

3-1 Example network configuration for leased line backup.................................................................. 3-93-2 Example network configuration for bandwidth on demand. ........................................................ 3-10

3-3 Example network configuration for dial-on-demand using modems. ........................................... 3-113-4 The Password Authentication Protocol (PAP) authentication process............................................ 3-173-5 The Challenge Handshake Authentication Protocol (CHAP) authentication process...................... 3-173-6 Example PPP packet decode debug output.................................................................................. 3-253-7 Example network for configuring a PPP link. ............................................................................... 3-293-8 Example output from the SHOW PPP command for a PPP link. .................................................... 3-303-9 Example output from the SHOW IP INTERFACE command for a PPP link configured for

use by the IP routing module. ..................................................................................................... 3-323-10 Example output from a SHOW PPP command for a PPP interface aggregated over

two ISDN B channels................................................................................................................... 3-333-11 Example output from the SHOW ISDN CALL command for a PPP interface aggregated

over two ISDN B channels. .......................................................................................................... 3-33

3-12 Example configuration for leased line backup.............................................................................. 3-363-13 Example configuration for bandwidth on demand....................................................................... 3-383-14 Example configuration for bandwidth on demand with leased line circuits and ISDN. .................. 3-403-15 Example output from the SHOW PPP command. ......................................................................... 3-84
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3-16 Example output from the SHOW PPP CONFIG command............................................................. 3-853-17 Example output from the SHOW PPP COUNT=INTERFACE command. ......................................... 3-913-18 Example output from the SHOW PPP COUNT=LCP command...................................................... 3-933-19 Example output from the SHOW PPP COUNT=MULTILINK command........................................... 3-993-20 Example output from the SHOW PPP COUNT=NCP command................................................... 3-1003-21 Example output from the SHOW PPP COUNT=PPPOE command. .............................................. 3-1023-22 Example output from the SHOW PPP DEBUG command............................................................ 3-1033-23 Example output from the SHOW PPP IDLETIMER command....................................................... 3-1043-24 Example output from the SHOW PPP Limits command. ............................................................. 3-1053-25 Example output from the SHOW PPP MULTILINK command. ..................................................... 3-1063-26 Example output from the SHOW PPP NAMESERVER command.................................................. 3-1083-27 Example output from the SHOW PPP PPPOE command. ............................................................ 3-1093-28 Example output from the SHOW PPP TEMPLATE command....................................................... 3-1113-29 Example output from the SHOW PPP TEMPLATE DEBUG command........................................... 3-1133-30 Example output from the SHOW PPP TXSTATUS command. ...................................................... 3-114

4-1 Model of a basic Frame Relay network. ......................................................................................... 4-34-2 Format of the Frame Relay HDLC frame with RFC 1490 encapsulation........................................... 4-54-3 Format of the Frame Relay HDLC frame with Cisco Systems proprietary encapsulation. ................. 4-6

4-4 Frame Relay network with randomly selected but unique DLCIs..................................................... 4-74-5 Frame Relay network with DLCIs as router identifiers..................................................................... 4-74-6 The effect of the slow-start mechanism on transmission rates. .................................................... 4-114-7 Congestion notification in a Frame Relay network. ...................................................................... 4-124-8 The effect of congestion control on the transmission rate into a congested

Frame Relay network. ................................................................................................................. 4-134-9 Example configuration for a Frame Relay network without an LMI............................................... 4-184-10 Example output from the SHOW FRAMERELAY CONFIG command for a Frame Relay

interface created with default parameters. .................................................................................. 4-194-11 Example output from the SHOW FRAMERELAY CONFIG and SHOW FRAMERELAY DLC

commands for a Frame Relay interface configured with three DLCIs and no LMI.......................... 4-204-12 Example output from the SHOW IP INTERFACE command for a Frame Relay interface................. 4-21

4-13 Example output from the SHOW FRAMERELAY LI command for a Frame Relay interfacewith IP and ARP user modules..................................................................................................... 4-214-14 Example output from the SHOW IP ARP command for a Frame Relay interface configured

with a static ARP......................................................................................................................... 4-214-15 Example output from the SHOW FRAMERELAY CONFIG and SHOW FRAMERELAY DLC

commands for a Frame Relay interface configured to use Q.933 LMI........................................... 4-234-16 Example output from the SHOW FRAMERELAY command........................................................... 4-474-17 Example output from the SHOW FRAMERELAY CIRUTILISATION command. ................................ 4-474-18 Example output from the SHOW FRAMERELAY CONFIG command. ............................................ 4-484-19 Example output from the SHOW FRAMERELAY COUNTER command. ......................................... 4-504-20 Example output from the SHOW FRAMERELAY DEBUG command. ............................................. 4-544-21 Example output from the SHOW FRAMERELAY LMI command. ................................................... 4-544-22 Example output from the SHOW FRAMERELAY UTILISATION command. ..................................... 4-55

4-23 Example output from the SHOW FRAMERELAY DLC command. .................................................. 4-564-24 Example output from the SHOW FRAMERELAY DLC command for a specified DLC. .................... 4-574-25 Example output from the SHOW FRAMERELAY DLC COUNTER command................................... 4-584-26 Example output from the SHOW FRAMERELAY LI command. ...................................................... 4-634-27 Example output from the SHOW FRAMERELAY LI command for a specified LI. ............................ 4-634-28 Example output from the SHOW FRAMERELAY LI COUNTER command....................................... 4-64

5-1 A typical ISDN Basic Rate Access circuit. ........................................................................................ 5-55-2 ISDN Primary Rate Access interface between the router and ISDN service provider......................... 5-85-3 Multiframe structure used in the frame synchronisation process for Primary Rate (E1) Access. ....... 5-95-4 Example output from the SHOW LAPD command for non-associated signalling........................... 5-305-5 Example configuration for a basic ISDN network. ........................................................................ 5-47

5-6 Example output from the SHOW ISDN CALL command for Head Office....................................... 5-535-7 Example commands and output to test the configuration of the central site router in a

basic ISDN network..................................................................................................................... 5-54
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5-8 Example commands and output to test the configuration of the regional site router in abasic ISDN network..................................................................................................................... 5-55

5-9 Example output from the ENABLE Q931 DEBUG=MDECODE command for a call initiatedby the router............................................................................................................................... 5-88

5-10 Example output from the ENABLE Q931 DEBUG=MRAW command for a call initiatedby the router............................................................................................................................... 5-89

5-11 Example output from the ENABLE Q931 DEBUG=SDLC command............................................... 5-905-12 Example output from the ENABLE Q931 DEBUG=SSPID command. ............................................. 5-905-13 Example output from the ENABLE Q931 DEBUG=SSPIDFILE command. ....................................... 5-915-14 Example output from the ENABLE Q931 DEBUG=STATE command. ............................................ 5-915-15 Example output from the SHOW BRI CONFIGURATION command. ............................................ 5-1125-16 Example output from the SHOW BRI COUNTER=INTERFACE command. .................................... 5-1145-17 Example output from the SHOW BRI COUNTER=BRI command for an S/T interface

with PSB2186 transceiver.......................................................................................................... 5-1155-18 Example output from the SHOW BRI COUNTER=BRI command for an S/T interface

with MC145574 transceiver...................................................................................................... 5-1165-19 Example output from the SHOW BRI COUNTER=BRI command for a U interface

with PEB2091 transceiver.......................................................................................................... 5-1175-20 Example output from the SHOW BRI CTEST command. ............................................................. 5-121

5-21 Example output from the SHOW BRI DEBUG command............................................................. 5-1225-22 Example output from the SHOW BRI STATE command for an S/T interface................................ 5-1235-23 Example output from the SHOW BRI STATE command for a U interface. ................................... 5-1255-24 Example output from the SHOW BRI TEST command for BRI interfaces using an

MC145474 transceiver.............................................................................................................. 5-1275-25 Example output from the SHOW BRI TEST command for BRI interfaces using an

MC145574 transceiver.............................................................................................................. 5-1285-26 Example output from the SHOW BRI TEST command for BRI interfaces using a

PSB2186 transceiver.................................................................................................................. 5-1295-27 Example output from the SHOW BRI TEST command for BRI interfaces using a

PEB2091 transceiver.................................................................................................................. 5-1305-28 Example output from the SHOW BRI TEST command for BRI interfaces using a

MC145572 transceiver.............................................................................................................. 5-1305-29 Example output from the SHOW ISDN CALL command. ............................................................ 5-1325-30 Example output from the SHOW ISDN CALL command for a specified call name....................... 5-1335-31 Example output from the SHOW ISDN CLILIST command. ......................................................... 5-1365-32 Example output from the SHOW ISDN DOMAINNAME command.............................................. 5-1375-33 Example output from the SHOW ISDN LOG command. ............................................................. 5-1385-34 Example output from the SHOW LAPD command for a Basic Rate Interface. ............................. 5-1395-35 Example output from the SHOW LAPD command for a Primary Rate Interface........................... 5-1405-36 Example output from the SHOW LAPD COUNT command......................................................... 5-1425-37 Example output from the SHOW LAPD STATE command........................................................... 5-1435-38 Example output from the SHOW PRI CONFIGURATION command. ............................................ 5-1445-39 Example output from the SHOW PRI COUNTER=DIAGNOSTIC command for a

T1-ESF interface operating in message-oriented mode............................................................... 5-145

5-40 Example output from the SHOW PRI COUNTER=DIAGNOSTIC command for aninterface using a MUNICH-type HDLC controller........................................................................ 5-147

5-41 Example output from the SHOW PRI COUNTER=DIAGNOSTIC command for aninterface using an SCC- or QMC-type HDLC controller.............................................................. 5-148

5-42 Example output from the SHOW PRI COUNTER=INTERFACE command. .................................... 5-1495-43 Example output from the SHOW PRI COUNTER=LINK NEAR command for an E1 or

T1 interface with a Bt 8370 transceiver. .................................................................................... 5-1505-44 Example output from the SHOW PRI COUNTER=LINK FAR command for a T1 interface

with a Bt 8370 transceiver and using ESF framing. .................................................................... 5-1515-45 Example output from the SHOW PRI COUNTER=LINK FAR command for a E1 interface

with a Bt 8370 transceiver. ....................................................................................................... 5-1515-46 Example output from the SHOW PRI COUNTER=PRI command for a single channel................... 5-153

5-47 Example output from the SHOW PRI COUNTER=LINK NEAR HISTORY=1 command foran E1 or T1 interface with a Bt 8370 transceiver........................................................................ 5-154

5-48 Example output from the SHOW PRI COUNTER=LINK FAR HISTORY=1 command fora T1 interface with a Bt 8370 transceiver and using ESF framing. .............................................. 5-155
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5-49 Example output from the SHOW PRI COUNTER=LINK FAR HISTORY=1 command foran E1 interface with a Bt 8370 transceiver. ............................................................................... 5-155

5-50 Example output from the SHOW PRI CTEST command for a E1 type interface. .......................... 5-1565-51 Example output from the SHOW PRI CTEST command for a T1 type interface. .......................... 5-1565-52 Example output from the SHOW PRI DEBUG command............................................................. 5-1575-53 Example output from the SHOW PRI STATE command for an E1 interface with a

PEB 2035 transceiver................................................................................................................. 5-1585-54 Example output from the SHOW PRI STATE command for an E1 interface with a

Bt 8370 transceiver. .................................................................................................................. 5-1595-55 Example output from the SHOW PRI STATE command for a T1 interface with a

Bt 8370 transceiver. .................................................................................................................. 5-1595-56 Identifiable fault locations in a Primary Rate link between a TE and an NT. ................................ 5-1635-57 Example output from the SHOW PRI TEST command for an E1 interface with a

PEB 2035 transceiver................................................................................................................. 5-1645-58 Example output from the SHOW PRI TEST command for an E1 interface with a

Bt 8370 transceiver. .................................................................................................................. 5-1655-59 Example output from the SHOW PRI TEST command for a T1 interface with a

Bt 8370 transceiver. 5-1665-60 Example output from the SHOW Q931 command. .................................................................... 5-168

5-61 Example output from the SHOW Q931 CALL command. ........................................................... 5-1705-62 Example output from the SHOW Q931 SPID command. ............................................................ 5-1715-63 Example output from the SHOW Q931 SPID command during the auto-SPID procedure............ 5-172

6-1 X.25 DCE hunt groups................................................................................................................ 6-166-2 Example configuration for a basic X.25 network.......................................................................... 6-196-3 Example output from the SHOW MIOX CIRCUIT ENCAPSULATION command for a

basic X.25 network. .................................................................................................................... 6-226-4 Example output from the SHOW IP ROUTE command for a basic X.25 network........................... 6-226-5 Example output from the SHOW LAPB COUNT command for a basic X.25 network. ................... 6-236-6 Example configuration for an extended X.25 network................................................................. 6-246-7 Example output from the SHOW MIOX CIRCUIT ENCAPSULATION command for an

extended X.25 network. ............................................................................................................. 6-296-8 Example output from the SHOW IP ROUTE command for an extended X.25 network. ................. 6-296-9 Example configuration for an X.25 network with hunt groups. ................................................... 6-316-10 Example output from the SHOW LAPB command........................................................................ 6-686-11 Example output from the SHOW LAPB CONFIG command. ......................................................... 6-696-12 Example output from the SHOW LAPB COUNT command. .......................................................... 6-706-13 Example output from the SHOW LAPB IDLETIMER command....................................................... 6-716-14 Example output from the SHOW MIOX command....................................................................... 6-726-15 Example output from the SHOW MIOX COUNT command. ......................................................... 6-736-16 Example output from the SHOW MIOX CIRCUIT command. ........................................................ 6-756-17 Example output from the SHOW MIOX CIRCUIT COUNTER command......................................... 6-766-18 Example output from the SHOW MIOX CIRCUIT ENCAP command. ............................................ 6-786-19 Example output from the SHOW X25C command. ...................................................................... 6-79

6-20 Example output from the SHOW X25C COUNTER command....................................................... 6-816-21 Example output from the SHOW X25C DTEADDRESS command. ................................................ 6-826-22 Example output from the SHOW X25C HUNTGROUP command.................................................. 6-836-23 Example output from the SHOW X25C PATH command.............................................................. 6-846-24 Example output from the SHOW X25C ROUTE command. .......................................................... 6-856-25 Example output from the SHOW X25C STATE command. ........................................................... 6-866-26 Example output from the SHOW X25C TCPKEEPALIVE command................................................ 6-876-27 Example output from the SHOW X25T command........................................................................ 6-886-28 Example output from the SHOW X25T CIRCUIT command. ......................................................... 6-896-29 Example output from the SHOW X25T COUNT command........................................................... 6-906-30 Example output from the SHOW X25T CPAR command.............................................................. 6-92

7-1 Example configuration for a basic synchronous tunnel................................................................... 7-37-2 Example output from the SHOW STT command. ........................................................................... 7-7
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8-1 Format of an IP datagram. ............................................................................................................ 8-68-2 Subdivision of the 32 bits of an Internet address into network and host fields for

class A, B and C networks............................................................................................................. 8-88-3 Local router acting as a DNS relay for an Internet connection. .................................................... 8-278-4 Using finger to trigger mail downloads from a mail host. ............................................................ 8-368-5 Example configuration for broadcast forwarding to a unicast address.......................................... 8-408-6 Example configuration for broadcast forwarding to a multicast address....................................... 8-418-7 Example configuration for a basic TCP/IP network. ...................................................................... 8-508-8 Example output from the SHOW IP ROUTE command for a basic TCP/IP network. ....................... 8-528-9 Example output from the SHOW PPP command for a basic TCP/IP network................................. 8-538-10 Example output from the SHOW IP RIP command for a basic TCP/IP network. ............................. 8-548-11 Example output from the PING command. .................................................................................. 8-548-12 Example configuration for IP filtering. ......................................................................................... 8-558-13 Example output from the SHOW IP FILTER command for IP filtering............................................. 8-588-14 Example output from the SHOW IP INTERFACE command for IP filtering. .................................... 8-588-15 Example output of the response to a finger query. .................................................................... 8-1248-16 Example output from the PING command when SCREENOUTPUT is set to YES. ......................... 8-1268-17 Example output from the SHOW BOOTP RELAY command........................................................ 8-1598-18 Example output from the SHOW IP command. .......................................................................... 8-160

8-19 Example output from the SHOW IP ARP command.................................................................... 8-1638-20 Example output from the SHOW IP ASPATHLIST command. ...................................................... 8-1648-21 Example output from the SHOW IP COMMUNITYLIST command............................................... 8-1658-22 Example output from the SHOW IP COUNTER=ARP command. ................................................. 8-1668-23 Example output from the SHOW IP COUNTER=EGP command. ................................................. 8-1668-24 Example output from the SHOW IP COUNTER=ICMP command. ............................................... 8-1678-25 Example output from the SHOW IP COUNTER=INTERFACE command. ...................................... 8-1688-26 Example output from the SHOW IP COUNTER=IP command...................................................... 8-1708-27 Example output from the SHOW IP COUNTER=MULTICAST command. ..................................... 8-1718-28 Example output from the SHOW IP COUNTER=ROUTE command.............................................. 8-1728-29 Example output from the SHOW IP COUNTER=SNMP command. .............................................. 8-1738-30 Example output from the SHOW IP COUNTER=UDP command.................................................. 8-174

8-31 Example output from the SHOW IP DNS command. .................................................................. 8-1768-32 Example output from the SHOW IP DNS CACHE command. ...................................................... 8-1788-33 Example output from the SHOW IP EGP command.................................................................... 8-1798-34 Example output from the SHOW IP FILTER command. ............................................................... 8-1808-35 Example output from the SHOW IP HELPER command............................................................... 8-1828-36 Example output from the SHOW IP HELPER COUNTER command. ............................................. 8-1828-37 Example output from the SHOW IP HOST command. ................................................................ 8-1838-38 Example output from the SHOW IP INTERFACE command. ........................................................ 8-1858-39 Example output from the SHOW IP INTERFACE COUNTER command......................................... 8-1868-40 Example output from the SHOW IP NAT command. .................................................................. 8-1888-41 Example output from the SHOW IP NAT COUNTER. .................................................................. 8-1908-42 Example output from the SHOW IP POOL command. ................................................................ 8-1938-43 Example output from the SHOW IP POOL SUMMARY command. .............................................. 8-194

8-44 Example output from the SHOW IP RIP command. .................................................................... 8-1948-45 Example output from the SHOW IP RIP command (X.25, Frame Relay interface). ....................... 8-1958-46 Example output from the SHOW IP RIPTIMER command............................................................ 8-1968-47 Example output from the SHOW IP RIP COUNTER=DETAIL command........................................ 8-1978-48 Example output from the SHOW IP ROUTE command. .............................................................. 8-1998-49 Example output from the SHOW IP ROUTE GENERAL command................................................ 8-2008-50 Example output from the SHOW IP ROUTE CACHE command................................................... 8-2018-51 Example output from the SHOW IP ROUTE COUNT command................................................... 8-2018-52 Example output from the SHOW IP ROUTE FULL command. ...................................................... 8-2028-53 Example output from the SHOW IP ROUTE FILTER command..................................................... 8-2038-54 Example output from the SHOW IP ROUTE MULTICAST command. ........................................... 8-2048-55 Example output from the SHOW IP ROUTE TEMPLATE command. ............................................. 8-205

8-56 Example output from the SHOW IP ROUTE TEMPLATE command. ............................................. 8-2058-57 Example output from the SHOW IP ROUTEMAP command. ....................................................... 8-2068-58 Example output from the SHOW IP TRUSTED command............................................................ 8-2088-59 Example output from the SHOW IP UDP command. .................................................................. 8-208
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11-8 Example output from the SHOW PIM6 BSRCANDIDATE command for an elected BSR. .............. 11-3411-9 Example output from the SHOW PIM6 BSRCANDIDATE command for an unelected

BSR candidate........................................................................................................................... 11-3411-10 Example output from the SHOW PIM6 CONFIG command. ....................................................... 11-3511-11 Example output from the SHOW PIM6 COUNTERS command.................................................... 11-3611-12 Example output from the SHOW PIM6 DEBUG command.......................................................... 11-3811-13 Example output from the SHOW PIM6 INTERFACE command.................................................... 11-3811-14 Example output from the SHOW PIM6 NEIGHBOUR command.................................................. 11-3911-15 Example output from the SHOW PIM6 ROUTE command when the router is the RP. ................. 11-4011-16 Example output from the SHOW PIM6 ROUTE command when the router is not the RP. .......... 11-4111-17 Example output from the SHOW PIM6 RPCANDIDATE command. ............................................. 11-4411-18 Example output from the SHOW PIM6 RPSET command............................................................ 11-4511-19 Example output from the SHOW PIM6 TIMER command. .......................................................... 11-46

12-1 Example output from the SHOW IPX SPXSPOOF command during an SPX connectionrequest storm. ......................................................................................................................... 12-14

12-2 Example configuration for a basic Novell IPX network................................................................ 12-1612-3 Example output from the SHOW IPX ROUTES command for a basic Novell IPX network............. 12-1812-4 Example output from the SHOW IPX SERVICES command for a basic Novell IPX network. ......... 12-19

12-5 Example output from the SHOW PPP command for a basic Novell IPX network. ........................ 12-1912-6 Example output from the SHOW IPX CIRCUIT command for a basic Novell IPX network. ........... 12-2012-7 Example output from the SHOW IPX SERVICES command for a basic Novell IPX network. ......... 12-2112-8 Example configuration for IPX dial-on-demand.......................................................................... 12-2212-9 Example output from the SHOW IPX CIRCUIT command for the Head Office router in a

dial-on-demand IPX network..................................................................................................... 12-2512-10 Example output from the SHOW IPX ROUTE command for the Head Office router in a

dial-on-demand IPX network..................................................................................................... 12-2612-11 Example output from the SHOW IPX SERVICE command for the Head Office router in a

dial-on-demand IPX network..................................................................................................... 12-2612-12 Example output from the SHOW IPX CIRCUIT command for the Remote Office router in a

dial-on-demand IPX network..................................................................................................... 12-27

12-13 Example output from the SHOW IPX ROUTE command for the Remote Office router in adial-on-demand IPX network..................................................................................................... 12-2712-14 Example output from the SHOW IPX SERVICE command for the Remote Office router in a

dial-on-demand IPX network..................................................................................................... 12-2812-15 Example output from the SHOW IPX command......................................................................... 12-5312-16 Example output from the SHOW IPX CACHE command. ........................................................... 12-5512-17 Example output from the SHOW IPX CALLLOG command for RIP and SAP broadcast packets.... 12-5612-18 Example output from the SHOW IPX CALLLOG command for a watchdog packet. .................... 12-5712-19 Example output from the SHOW IPX CALLLOG command for a connection request storm......... 12-5812-20 Example output from the SHOW IPX CIRCUIT command. .......................................................... 12-5912-21 Example output from the SHOW IPX COUNTER=CIRCUIT command.......................................... 12-6112-22 Example output from the SHOW IPX COUNTER=GATEWAY command...................................... 12-6312-23 Example output from the SHOW IPX COUNTER=ROUTES command.......................................... 12-64

12-24 Example output from the SHOW IPX EXCLUSION command...................................................... 12-6412-25 Example output from the SHOW IPX INCLUSION command....................................................... 12-6512-26 Example output from the SHOW IPX RIP command. .................................................................. 12-6612-27 Example output from the SHOW IPX ROUTE command. ............................................................ 12-6712-28 Example output from the SHOW IPX SAP command.................................................................. 12-6812-29 Example output from the SHOW IPX SERVICE command........................................................... 12-7012-30 Example output from the SHOW IPX SPXSPOOF command........................................................ 12-71

13-1 Determining appropriate circuit costs. ......................................................................................... 13-613-2 :Assigning an arbitrary cost to each link based on bandwidth...................................................... 13-713-3 Using interface costs to establish preferred routes between nodes in a DECnet network. ............ 13-813-4 Example configuration for a basic DECnet network. .................................................................... 13-9

13-5 Example output from the SHOW DECNET ROUTE command for a basic DECnet network. ......... 13-1013-6 Example output from the SHOW PPP command for a basic DECnet network. ............................ 13-1113-7 Example output from the SHOW DECNET GATEWAY command for a basic DECnet network. ... 13-1113-8 Example output from the ADD DECNET EXCLUSION command. ................................................ 13-13
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13-9 Example output from the ADD DECNET INCLUSION command.................................................. 13-1413-10 Example output from the ADD DECNET INTERFACE command.................................................. 13-1513-11 Example output from the ADD DECNET LPN command............................................................. 13-1613-12 Example output from the SET DECNET command...................................................................... 13-2413-13 Example output from the SET DECNET INTERFACE command.................................................... 13-2513-14 Example output from the SHOW DECNET command................................................................. 13-2513-15 Example output from the SHOW DECNET COUNTER=GLOBAL command.................................. 13-2713-16 Example output from the SHOW DECNET COUNTER=INTERFACE command. ............................ 13-2713-17 Example output from the SHOW DECNET COUNTER=ROUTE command.................................... 13-2813-18 Example output from the SHOW DECNET EXCLUSION command. ............................................. 13-2913-19 Example output from the SHOW DECNET INCLUSION command............................................... 13-3013-20 Example output from the SHOW DECNET INTERFACE command............................................... 13-3013-21 Example output from the SHOW DECNET LPN command. ......................................................... 13-3113-22 Example output from the SHOW DECNET ROUTE command. .................................................... 13-32

14-1 TTY devices provide an interface between terminals and Telnet connections, the routerscommand processor, and interactive and Telnet services provided by the router.......................... 14-3

14-2 Example output from the CONNECT command for a successful connection to a Telnet service.. 14-1414-3 Example output from the CONNECT command for a successful connection to a

host port service. ...................................................................................................................... 14-1414-4 Example output from the SHOW SERVICE command for a port with MANAGER privilege.......... 14-2114-5 Example output from the SHOW SERVICE command for a port with USER privilege................... 14-2114-6 Example output from the SHOW SESSIONS command............................................................... 14-2214-7 Example output from the SHOW TTY command........................................................................ 14-2214-8 Example output from the SHOW TTY command........................................................................ 14-2414-9 Example output from the SHOW TTY=ALL SUMMARY command.............................................. 14-2514-10 Example output from the SHOW TTY DEFAULT command......................................................... 14-2514-11 Example output from the TELNET command.............................................................................. 14-27

15-1 Example output from the SHOW TCP command.......................................................................... 15-315-2 Example output from the LPD SHOW command for LPD queue Example1. .................................. 15-6

15-3 Example output from the LPD SHOW QUEUE command during the processing of a print job....... 15-715-4 Example output from the SHOW STREAM command................................................................. 15-1015-5 Example output from the SHOW STREAM command for an example configuration. .................. 15-1115-6 Example output from the SHOW PERM command..................................................................... 15-1215-7 Example output from the SHOW PERM command for router 172.26.4.1 in an

example configuration. ............................................................................................................. 15-1215-8 Example output from the SHOW PERM command for router 172.20.34.9 in an

example configuration. ............................................................................................................. 15-1315-9 Example output from the SHOW LPD command........................................................................ 15-2215-10 Example output from the SHOW PERM command..................................................................... 15-22

16-1 Example of dial-on-demand ISDN before configuring OSPF on demand..................................... 16-1016-2 Example of dial-on-demand ISDN after configuring OSPF on demand........................................ 16-10

16-3 A basic OSPF network. .............................................................................................................. 16-1216-4 A basic OSPF network with an addressless PPP link.................................................................... 16-1316-5 A OSPF network with a virtual link. ........................................................................................... 16-1416-6 Example output from the SHOW OSPF command...................................................................... 16-4516-7 Example output from the SHOW OSPF AREA command. ........................................................... 16-4716-8 Example output from the SHOW OSPF AREA command for a specified area.............................. 16-4816-9 Example output from the SHOW OSPF HOST command. ........................................................... 16-5116-10 Example output from the SHOW OSPF INTERFACE command.................................................... 16-5216-11 Example output from the SHOW OSPF INTERFACE command for a specified OSPF interface. ..... 16-5316-12 Example output from the SHOW OSPF LSA SUMMARY command............................................. 16-5716-13 Example output from the SHOW OSPF LSA FULL command....................................................... 16-5816-14 Example output from the SHOW OSPF NEIGHBOUR command.................................................. 16-60

16-15 Example output from the SHOW OSPF RANGE command.......................................................... 16-6116-16 Example output from the SHOW OSPF ROUTE command. ......................................................... 16-6316-17 Example output from the SHOW OSPF STUB command............................................................. 16-64
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17-1 An example bridged LAN. ........................................................................................................... 17-417-2 Example configuration for a basic bridged network................................................................... 17-1117-3 Example output from the SHOW BRIDGE PORT command for a basic bridged network. ............ 17-1217-4 Example output from the SHOW BRIDGE PROTOCOL command for a basic

bridged network. ...................................................................................................................... 17-1217-5 A bridged network with a mesh topology using the Spanning Tree Protocol to

provide redundancy. ................................................................................................................. 17-1317-6 A bridged network requiring the use of bridge filters ................................................................ 17-1517-7 Example output from the SHOW BRIDGE command. ................................................................. 17-3517-8 Example output from the SHOW BRIDGE COUNTER command.................................................. 17-3717-9 Example output from the SHOW BRIDGE FILTER command. ...................................................... 17-4017-10 Example output from the SHOW BRIDGE GROUP command...................................................... 17-4217-11 Example output from the SHOW BRIDGE PORT command for a port with the

Spanning Tree Protocol disabled. .............................................................................................. 17-4417-12 Example output from the SHOW BRIDGE PORT command for a port with the

Spanning Tree Protocol enabled................................................................................................ 17-4517-13 Example output from the SHOW BRIDGE PROTOCOL command................................................ 17-4617-14 Example output from the SHOW BRIDGE SPANNING command. ............................................... 17-4717-15 Example output from the SHOW BRIDGE STATION command. .................................................. 17-50

18-1 An RSA public key file in SSH format......................................................................................... 18-1518-2 An RSA public key file in NIQ format. ........................................................................................ 18-1518-3 An RSA public key file in HEX format. ....................................................................................... 18-1618-4 Example output from the SHOW ENCO command for a router with a MAC card installed......... 18-2718-5 Example output from the SHOW ENCO command for a router without a

MAC card installed. .............................................................................................................. 18-2718-6 Example output from the SHOW ENCO CHANNEL command.................................................... 18-2918-7 Example output from the SHOW ENCO CHANNEL command for a specified channel. ............... 18-2918-8 Example output from the SHOW ENCO CHANNEL COUNTER command.................................... 18-3118-9 Example output from the SHOW ENCO COUNTER=DES command............................................ 18-3418-10 Example output from the SHOW ENCO COUNTER=DH command............................................. 18-36

18-11 Example output from the SHOW ENCO COUNTER=HMAC command. ...................................... 18-3618-12 Example output from the SHOW ENCO COUNTER=JOBPROCCESSING command...................... 18-3718-13 Example output from the SHOW ENCO COUNTER=MAC command.......................................... 18-3818-14 Example output from the SHOW ENCO COUNTER=PAC command. .......................................... 18-3918-15 Example output from the SHOW ENCO COUNTER=PRED command.......................................... 18-4018-16 Example output from the SHOW ENCO COUNTER=RSA command............................................ 18-4118-17 Example output from the SHOW ENCO COUNTER=STAC command. ........................................ 18-4218-18 Example output from the SHOW ENCO COUNTER=USER command.......................................... 18-4518-19 Example output from the SHOW ENCO COUNTER=UTIL command. .......................................... 18-4618-20 Example output from the SHOW ENCO KEY command............................................................. 18-4818-21 Example output from the SHOW ENCO KEY command for a specified DES key. ........................ 18-4918-22 Example output from the SHOW ENCO KEY command for a specified DES key with an

IPv6 address.............................................................................................................................. 18-49

19-1 Pin wiring diagram for a cable to connect a terminal to an asynchronous port that is to betested by the Test Facility. ........................................................................................................... 19-3

19-2 Pin wiring diagram for a cable to connect a terminal to a DB9 female asynchronous portthat is to be tested by the Test Facility......................................................................................... 19-4

19-3 Pin wiring diagram for a cable to connect a terminal to a DB9 male asynchronous portthat is to be tested by the Test Facility......................................................................................... 19-4

19-4 Ethernet AUI loopback plug wiring diagram. ............................................................................... 19-519-5 Ethernet twisted pair (TP) loopback plug wiring diagram. ............................................................ 19-519-6 RJ45 loopback plug wiring diagram. ........................................................................................... 19-619-7 DB9 male loopback plug wiring diagram..................................................................................... 19-619-8 DB9 female loopback plug wiring diagram.................................................................................. 19-6

19-9 Basic Rate ISDN loopback plug wiring diagram............................................................................ 19-819-10 Example output from the SHOW BRI TEST command................................................................... 19-919-11 Primary Rate ISDN 120W loopback plug wiring diagram............................................................ 19-10
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19-12 Example output from the ENABLE TEST INTERFACE MORE command for anasynchronous port. ................................................................................................................... 19-13

19-13 Example output from the ENABLE TEST INTERFACE MORE command for a synchronous port. ... 19-1319-14 Example output from the SHOW TEST INTERFACE command. ................................................... 19-1519-15 Example output from the SHOW TEST INTERFACE COUNTER command. ................................... 19-17

20-1 Network Model for the Network Time Protocol. .......................................................................... 20-320-2 Example network configuration for a network time service.......................................................... 20-520-3 Example output from the SHOW NTP commands for the Head Office router in an example

network time service................................................................................................................... 20-620-4 Example output from the SHOW NTP command.......................................................................... 20-9

21-1 Dialogue between a user and the router for a call made to an asynchronous portassociated with the call definition Async server........................................................................ 21-4

21-2 Example output from the ADD ACC CALL command. ............................................................... 21-1921-3 Example output from the SET ACC CALL command. ................................................................. 21-2821-4 Example output from the SHOW ACC command. ..................................................................... 21-3121-5 Example output from the SHOW ACC CALL command. ............................................................ 21-3321-6 Example output from the SHOW ACC DOMAINNAME command.............................................. 21-35

21-7 Example output from the SHOW ACC SCRIPT command........................................................... 21-36

22-1 Format of a packet with GRE encapsulation. ............................................................................... 22-222-2 A typical scenario for GRE encapsulation of IP over IP. ................................................................. 22-322-3 Example configuration for multi-point GRE encapsulation of IP over IP. ....................................... 22-722-4 Example output from the SHOW GRE command. ...................................................................... 22-1522-5 Example output from the SHOW GRE GENERAL command........................................................ 22-15

23-1 Triggers respond to events by performing a sequence of predefined scripts................................. 23-223-2 The effects of different combinations of the AFTER and BEFORE parameters in the

CREATE TRIGGER and SET TRIGGER commands. ...................................................................... 23-1023-3 Example output from the SHOW TRIGGER command................................................................ 23-22

23-4 Example output from the SHOW TRIGGER FULL command........................................................ 23-2323-5 Example output from the SHOW TRIGGER STATUS command................................................... 23-2423-6 Example output from the SHOW TRIGGER COUNTER command................................................ 23-25

24-1 AppleTalk protocol architecture, with the elements supported by the router highlighted............. 24-424-2 Example network configuration for AppleTalk routing............................................................... 24-1624-3 Example output from the SHOW APPLE command. ................................................................... 24-3924-4 Example output from the SHOW APPLE AARP command........................................................... 24-4024-5 Example output from the SHOW APPLE CIRCUIT command....................................................... 24-4124-6 Example output from the SHOW APPLE COUNTER=AARP command. ........................................ 24-4224-7 Example output from the SHOW APPLE COUNTER=ATP command............................................ 24-4224-8 Example output from the SHOW APPLE COUNTER=DDP command. .......................................... 24-4324-9 Example output from the SHOW APPLE COUNTER=NBP command. .......................................... 24-44

24-10 Example output from the SHOW APPLE COUNTER=PORT command. ........................................ 24-4424-11 Example output from the SHOW APPLE COUNTER=ROUTE command....................................... 24-4524-12 Example output from the SHOW APPLE COUNTER=ZIP command. ............................................ 24-4624-13 Example output from the SHOW APPLE DLCI command............................................................ 24-4724-14 Example output from the SHOW APPLE PACKETFILTER command. ............................................ 24-4824-15 Example output from the SHOW APPLE PORT command for a specified port............................. 24-4924-16 Example output from the SHOW APPLE PORT command........................................................... 24-5024-17 Example output from the SHOW APPLE ROUTE command......................................................... 24-5124-18 Example output from the SHOW APPLE ROUTEFILTER command............................................... 24-5224-19 Example output from the SHOW APPLE ZONE command........................................................... 24-5424-20 Example output from the SHOW APPLE ZONEFILTER command................................................. 24-55

25-1 Illustration of an E1/T1 network. ................................................................................................. 25-325-2 A TDM star network. .................................................................................................................. 25-425-3 Example output from the SHOW TDM GROUP command.......................................................... 25-12
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26-1 Example configuration for a basic logging facility. ..................................................................... 26-1126-2 Example output from the SHOW LOG command....................................................................... 26-3726-3 Example output from the SHOW LOG FULL command............................................................... 26-3926-4 Example output from the SHOW LOG COUNTER command. ..................................................... 26-4126-5 Example output from the SHOW LOG OUTPUT command. ........................................................ 26-4326-6 Example output from the SHOW LOG OUTPUT FULL command................................................. 26-4526-7 Example output from the SHOW LOG QUEUE command........................................................... 26-4726-8 Example output from the SHOW LOG RECEIVE command......................................................... 26-4926-9 Example output from the SHOW LOG STATUS command.......................................................... 26-50

27-1 Example output from the SHOW SCRIPT command. .................................................................. 27-1227-2 Example output from the SHOW SCRIPT command for a specified script. .................................. 27-12

28-1 Bell Tone..................................................................................................................................... 28-828-2 Mute Tone.................................................................................................................................. 28-928-3 Unavailable Tone. ....................................................................................................................... 28-928-4 Ring Tone. ................................................................................................................................ 28-1028-5 Busy Tone. ................................................................................................................................ 28-1028-6 Dial Tone. ................................................................................................................................. 28-10

28-7 Dial Feature Set Tone. ............................................................................................................... 28-1128-8 External Dial Tone. .................................................................................................................... 28-1128-9 Feature Set Tone....................................................................................................................... 28-1228-10 Example output from the SHOW PBX command........................................................................ 28-6628-11 Example output from the SHOW PBX CALL command............................................................... 28-6828-12 Example output from the SHOW PBX EXTENSION command..................................................... 28-6928-13 Example output from the SHOW PBX GROUP command. .......................................................... 28-7228-14 Example output from the SHOW PBX LCR command................................................................. 28-73

29-1 Example output from the SHOW DHCP command..................................................................... 29-2329-2 Example output from the SHOW DHCP CLIENT command......................................................... 29-2529-3 Example output from the SHOW DHCP POLICY command. ....................................................... 29-27

29-4 Example output from the SHOW DHCP RANGE command. ....................................................... 29-28

30-1 Model for implementing the Layer Two Tunnelling Protocol (L2TP).............................................. 30-330-2 Example configuration for inter-router L2TP tunnels. ................................................................... 30-630-3 Example configuration for a simple dial-in system using L2TP. ..................................................... 30-830-4 Example output from the SHOW L2TP command. ..................................................................... 30-2630-5 Example output from the SHOW L2TP COUNTER command. .................................................... 30-2730-6 Example output from the SHOW L2TP CALL command. ............................................................ 30-3030-7 Example output from the SHOW L2TP IP command................................................................... 30-3130-8 Example output from the SHOW L2TP TUNNEL command. ........................................................ 30-3330-9 Example output from the SHOW L2TP TUNNEL command for a specified active call................... 30-3530-10 Example output from the SHOW L2TP TUNNEL COUNTER command......................................... 30-3730-11 Example output from the SHOW L2TP USER command. ............................................................ 30-40

31-1 Components of a network management system. ........................................................................ 31-231-2 The top levels of the Internet-standard Management Information Base (MIB). ............................. 31-331-3 Format of an SNMP message. ..................................................................................................... 31-731-4 Example output from the SHOW SNMP command. ................................................................... 31-2131-5 Example output from the SHOW SNMP COMMUNITY command. ............................................. 31-23

32-1 Traditional retail environment with asynchronous TPAD connections........................................... 32-232-2 Router-based TPAD in a retail environment. ................................................................................ 32-332-3 Diagnosing a missing or invalid X.25 NUI in a TPAD configuration. ............................................ 32-1132-4 Diagnosing an invalid X.25 logical channel number in a TPAD configuration. ............................ 32-1232-5 Diagnosing an invalid X.25 logical channel number in a TPAD configuration. ............................ 32-13

32-6 Example output from the SHOW TPAD command. .................................................................... 32-2232-7 Example output from the SHOW TPAD COUNTER command..................................................... 32-2432-8 Example output from the SHOW TPAD PORT command. ........................................................... 32-25
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33-1 RSVP sessions with multicast receiver addresses........................................................................... 33-333-2 RSVP Path messages travel from the sender to the receiver.......................................................... 33-333-3 RSVP Resv messages travel from the receiver

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