OptiX Metro WDM Series Equipment Commissioning and Testing Introduction ISSUE1.0
OTA101103 OptiX Metro series Equipment Networking and Applic.ppt
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Transcript of OTA101103 OptiX Metro series Equipment Networking and Applic.ppt
HUAWEI TECHNOLOGIES CO., LTD.
All rights reserved
www.huawei.com
Internal
OTA101103 OptiX Metro series Equipment Networking
and Application
ISSUE 1.00
HUAWEI TECHNOLOGIES CO., LTD. Page 2All rights reserved
On completion of this course, the participants
will be able to:
Understand the basic SDH networks and
basic SDH network elements
Understand the common survivable
networks and synchronization
HUAWEI TECHNOLOGIES CO., LTD. Page 3All rights reserved
Network Topologies
What does a Network Topology
consist of?
Network Elements
Transmission Lines
Importance of Network Topology
Availability of Channels
Reliability of Network
Efficiency of Network
HUAWEI TECHNOLOGIES CO., LTD. Page 4All rights reserved
Chapter 1 Networking of Metro 100Chapter 1 Networking of Metro 100
Chapter 2 Networking of Metro 1000Chapter 2 Networking of Metro 1000
HUAWEI TECHNOLOGIES CO., LTD. Page 5All rights reserved
Networking of Metro 100
STM-1 Chain
STM-1 Ring
STM-1 Chain with
Metro 1000
OptiX Metro 100
OptiX Metro 1000 / OSN Series
HUAWEI TECHNOLOGIES CO., LTD. Page 6All rights reserved
Networking of Metro 100
OptiX Metro 100 Other vendor’s NEs OptiX Metro 100
D1-D3 D4-D12 D1-D3
Other vendor’s NMST2000 NMS
HUAWEI TECHNOLOGIES CO., LTD. Page 7All rights reserved
Networking of Metro 100
OSI DCN OptiX RingLAN(OSI)
T2000
Metro 100 NM information can be transmitted by OSI over DCC
HUAWEI TECHNOLOGIES CO., LTD. Page 8All rights reserved
Networking of Metro 100
OSI DCN
T2000
OptiX RingOther Vender'sRing
LAN
DCC
OSI DCN OptiX Ring Other Vender's
Ring
LAN
DCCOther Vender's
EMS
HUAWEI TECHNOLOGIES CO., LTD. Page 9All rights reserved
Protection Topology of Metro 100
Chain (non-protection)
SNCP (SubNetwork Connection Protection)
HUAWEI TECHNOLOGIES CO., LTD. Page 10All rights reserved
SubNetwork Connection Protection
Description:
Protection one SubNetwork Connection
Can be adapted to all networks
SNC Starting
Node
SNC Termination Node
ProtectionSNC
WorkingSNC
Sub-network 1
Sub-network 2
NE A NE B
Selector
123
123
HUAWEI TECHNOLOGIES CO., LTD. Page 11All rights reserved
SubNetwork Connection Protection Protection principle
Concurrent sending (transmit end)
Selective receiving (receive end)
A
B
C
D
in
out
out
out
out
out
out
out
out
in
in
in
in
in
in
inSNCP Ring
E1
E1
STM-N
Sub-network 1
Sub-network 2
HUAWEI TECHNOLOGIES CO., LTD. Page 12All rights reserved
SubNetwork Connection Protection
Protection switch triggers:
Default
− R-LOS, R-LOF, MS-AIS, B2-EXC, AU-LOP, AU-AIS, TU-
AIS, TU-LOP, HP-LOM, HP-UNEQ, B3-EXC, Unplug the
correspond line card
Optional
− B2-SD, HP-TIM, B3-SD
HUAWEI TECHNOLOGIES CO., LTD. Page 13All rights reserved
SubNetwork Connection Protection
Protection Restoration:
Restoration time - 10 minutes (provisionable in the range of
5-12 minutes)
A
B
C
D
switch
S1
P1A
B
C
D
S1
P1
HUAWEI TECHNOLOGIES CO., LTD. Page 14All rights reserved
SNCP services grouping
If there are too much SNCP services in one node, switch
completion time probably will be more than 50ms
Method to solve the problem: grouping
Make all of SNCP services with the same source board,
sink board and route as a group
Select a SNCP service as detection objective
Increase SNCP information processed
Restoration is separated from grouping
Grouping is not effective to external commands
HUAWEI TECHNOLOGIES CO., LTD. Page 15All rights reserved
Chapter 1 Networking of Metro 100Chapter 1 Networking of Metro 100
Chapter 2 Networking of Metro 1000Chapter 2 Networking of Metro 1000
HUAWEI TECHNOLOGIES CO., LTD. Page 16All rights reserved
Networking of Metro 1000
Linear Multiplex Section Protection:
− 1+1 Linear MS Protection
− 1:N (N≤5) Linear MS Protection
Protection Rings
− 2-fibre Bidirectional Multiplex Section Shared Protection
Ring
− 2-fibre Unidirectional Multiplex Section Dedicated
Protection Ring
SubNetwork Connection Protection
HUAWEI TECHNOLOGIES CO., LTD. Page 17All rights reserved
1+1 Linear MS Protection
Structure of 1+1 Linear MS Protection System:
DoubleTM
DoubleTM
Working
Protection
HUAWEI TECHNOLOGIES CO., LTD. Page 18All rights reserved
1+1 Linear MS Protection
Protection mechanism of 1+1 linear MS protection system:
Concurrent sending permanent bridging
Selective receiving switching
W
P
A B
HUAWEI TECHNOLOGIES CO., LTD. Page 19All rights reserved
1+1 Linear MS Protection
Switching modes of 1+1 linear MS protection system:
Unidirectional switching or Bidirectional switching
Revertive mode or Non-Revertive mode
As a result:
Unidirectional switching in Revertive mode
Unidirectional switching in non-revertive mode
Bidirectional switching in Revertive mode
Bidirectional switching in non-revertive mode
APS protocol necessity
Unnecessary for unidirectional switching in non-Revertive mode
Necessary for other modes
Bidirectional and non-revertive is suggested
HUAWEI TECHNOLOGIES CO., LTD. Page 20All rights reserved
1:N Linear MS Protection
1:N Linear MS Protection
A B
Bridging Selector
Protection section (Transmit)
Working section 1(Transmit)
Protection section (Receive)
Working section 1(Receive)
Working section 2(Transmit)
Working section 2(Receive)
Working section N(Transmit)
Working section N(Receive)
Selector Bridging
HUAWEI TECHNOLOGIES CO., LTD. Page 21All rights reserved
1:N Linear MS Protection Switching modes of 1:N linear MS protection system:
Bidirectional switching, Revertive mode
APS protocol necessity
Necessary
Features
Based on TM
Switch within point to point
After configuration 2 minutes, MS protocol is started automatically
External commands
− Forced Switch
− Manual Switch
− Exercise Switch
− Locked out
HUAWEI TECHNOLOGIES CO., LTD. Page 22All rights reserved
Comparison
Protection switching triggers are SF and SD
SF (Signal Fail) includes RLOS, RLOF, MS-AIS,
etc.
SD (Signal Degrade) includes B2-SD
APS Necessity
All require APS protocol, but unidirectional 1+1
linear MS protection
ComparisonComparison
HUAWEI TECHNOLOGIES CO., LTD. Page 23All rights reserved
Comparison
Network Capacity
NSTM-N for 1:N linear MS protection without
extra traffic or (1+N) STM-N with extra traffic
STM-N for 1+1 linear MS protection regardless
of the switching modes
ComparisonComparison
HUAWEI TECHNOLOGIES CO., LTD. Page 24All rights reserved
Questions
Which one has the fastest switching speed?
Which one can carry extra traffic?
HUAWEI TECHNOLOGIES CO., LTD. Page 25All rights reserved
Traffic flow when network is normal:
Working channels: 1~N/2 VC4
Protection channels: N/2+1~N VC4
2f-bi MS SP-Ring2f-bi MS SP-Ring
S1 P2S2 P1
NE A
NE B
NE C
NE D
4 VC4’s2 Working – S12 Protection – P2
4 VC4’s2 Working – S22 Protection – P1
HUAWEI TECHNOLOGIES CO., LTD. Page 26All rights reserved
2f-bi MS SP-Ring
The STM-1(e) signals occupy VC4 - #1
Source @ NE A Tributary Unit
NE A East Line unit (VC4 - #1)
fibre Line
NE B West Line unit (VC4 - #1)
NE B East Line unit (VC4 - #1)
fibre Line
NE C West Line unit (VC4 - #1)
Sink @ NE C Tributary Unit
Assume Traffic Service between NEA and NEC under normal traffic flow
STM-4 two-fibrebidirectional MSP ring
NE A
NE B
NE C
NE D
Metro 1000
East
Primary ring
West
West
West
East
East
West
East
Traffic between NE A and NE C
#1 VC-4
HUAWEI TECHNOLOGIES CO., LTD. Page 27All rights reserved
2f-bi MS SP-Ring2f-bi MS SP-RingIf the fibre between A and B breaks, the new switched STM-1(e) services flow will be as following: The STM-1(e) signals will switch to VC4 - #3
Source @ NE A Tributary Unit
NE A West Line unit (VC4 - #3)
fibre Line
NE D East Line unit (VC4 - #3)
NE D West Line unit (VC4 - #3)
fibre Line
NE C East Line unit (VC4 - #3)
NE C West Line unit (VC4 - #3)
fibre Line
NE B East Line unit (VC4 - #3)
NE B East Line unit (VC4 - #1)
fibre Line
NE C West Line unit (VC4 - #1)
Sink @ NE C Tributary Unit
STM-4 two-fibrebidirectional MSP ring
NE A
NE B
NE C
NE D
Metro 1000
East
Primary ring
West
West
West
East
East
West
East
Traffic between NE A and NE C
#3 VC-4
#3 VC-4
#1 VC-4
HUAWEI TECHNOLOGIES CO., LTD. Page 28All rights reserved
2f-bi MS SP-Ring
Protection switching triggers:
Automatic protection switching
− SF (Signal Failure): R-LOS, R-LOF, MS-AIS
− SD (Signal Degrade): B2-EXC, B2-SD
External initiated protection switching
− Forced switch
− Manual switch
− Exercise switch
− Locked out
HUAWEI TECHNOLOGIES CO., LTD. Page 29All rights reserved
2f-bi MS SP-Ring
Protection switching restoration:
Automatic protection switching
− Clear of SF (Signal Failure): R-LOS, R-LOF, MS-AIS
− Clear of SD (Signal Degrade): B2-EXC, B2-SD
− WTR (Wait to Restore): 10 minutes (5-12 minutes
provisionable)
External commands
− Clear of Forced switch
− Clear of Manual switch
HUAWEI TECHNOLOGIES CO., LTD. Page 30All rights reserved
2f-bi MS SP-Ring
APS controller:
Processes APS protocol and algorithm
− APS protocol is carried in the K1, K2 bytes.
HUAWEI TECHNOLOGIES CO., LTD. Page 31All rights reserved
Transition of APS controller status:
2f-bi MS SP-Ring2f-bi MS SP-Ring
I
I
I
I
S
S
P
P
WTR
WTR
P
PI = Idle P = Pass-throughS = Switching WTR = Wait to Restore
Recover fibres
Cut off fibres10 minutes later
HUAWEI TECHNOLOGIES CO., LTD. Page 32All rights reserved
2f-bi MS SP-Ring
Features of two-fibre bidirectional MS Shared Protection Ring:
Advantages:
− Time slots can be reused
− High network capacity ½*M*STM-N
Disadvantages:
− Mechanism complicated
Application:
− Mainly for STM-4 and above
− Scattered traffic distribution
HUAWEI TECHNOLOGIES CO., LTD. Page 33All rights reserved
SNCP
The most common topology in Access Layer
Network is flexibly to build and extend
Services are easily to configure and manage
HUAWEI TECHNOLOGIES CO., LTD. Page 34All rights reserved
SNCP
2 STM-1 level non-protection inter-connection rings is built by Metro 1000
Non-protection
Working channel
Standby channel
HUAWEI TECHNOLOGIES CO., LTD. Page 35All rights reserved
SNCP2 STM-1 level non-protection inter-connection rings is built by Metro 1000
Non-protection
Working channel
Standby channel
HUAWEI TECHNOLOGIES CO., LTD. Page 36All rights reserved
Conversion of SNCP and Normal Services
Configuring service can be converted between SNCP type
protection and non-protection freely
Standby route can be set by customers according to the
network topology
Changing the service type will not interrupt service
transmission
HUAWEI TECHNOLOGIES CO., LTD. Page 37All rights reserved
Conversion of SNCP and Normal Services
Non-protection
Working channel
Standby channel
HUAWEI TECHNOLOGIES CO., LTD. Page 38All rights reserved
Questions
Which differences can you find between a unidirectional ring
and a bidirectional one?
What’s the difference between a SNCP and an MSP?
Which one can carry extra traffic?
HUAWEI TECHNOLOGIES CO., LTD. Page 39All rights reserved
Summary
Item 2f-MS SPRing SNCP
APS protocol necessary unnecessary
Typical services Bidirectional and
disperse
unidirectional and
centralized
Switch level
(objective)
MS SNC services
Suitable networking Only ring All topology
Switching
implementing boards
LU, XC LU, XC
Switch time About 25ms The more traffic, the longer
switching time
Network Capacity K*STM-N/2 STM-N
Extra traffic Support Not support
Network Capacity K*STM-N/2 STM-N
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