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Transcript of cisco 6500-virtual switch sysetm-s6367_vss_tech_talk_final
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2008 Cisco Systems, Inc. All rights reserved.
Deploying CiscoCatalyst 6500
Series VirtualSwitching System
Rob Sloan Product/Systems Marketing Manager
Balaji Sivasubramanian Product Manager
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Presenters
Rob SloanProduct/Systems Marketing
Manager
BalajiSivasubramanian
Product Manager
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Overview
Introduction
Architecture
Operational Manageability
Deployment Considerations
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SiSi SiSi
Campus and Data Center Networks
Servers
AccessSiSi SiSi
Access
Distribution
Large, Complex Networks = Challenging Network Management
In-deterministic Recovery from Network Failure = Business Downtime
Inefficient Resource Utilization = Lost Investment
STP/HSRP
NIC Teaming
Increasing Real-time Applications = Latency Sensitive
Catalyst 6500 Virtual Switching System 1440Targeted Customer Issues
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Features
Network System Virtualization
Non-Stop Forwarding / Inter-Chassis
Stateful Switch Over (NSF/SSO)
Multi-Chassis EtherChannel (MEC)
Benefits of VSSIncreased Operational Efficiency
via Simplified Network
Boost Non-Stop Communication
Scale the System BandwidthCapacity to 1.4 Tbps
Virtual Switching System 1440Network System Virtualization
Physical View Logical ViewActive Control Plane
Active Data PlaneHot-Standby Control Plane
Active Data Plane
SiSi SiSi
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Virtual Switch System: Concepts
VirtualSwitchStandby
VirtualSwitchActive
Virtual Switch
Link
Cisco Catalyst 6500 thatOperates as the ActiveControl Plane for theVirtual Switch
Active ControlPlane
Active DataPlane
Hot-StandbyControl Plane
Active DataPlane
Virtual Switch Domain
Defines Two CiscoCatalyst 6500s that AreParticipating Together asa Virtual Switch
Standard 10GE Link Bundle Joining thetwo Cisco Catalyst 6500s Allowing Themto Operate as a Single Logical Device
Cisco Catalyst 6500 thatOperates as the StandbyControl Plane for theVirtual Switch
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SiSi SiSi
Traditional L2/L3
Complex STP Configuration andManagement
HSRP/VRRP- 3 IP Address
Manage Two Nodes and Config
VSS
Loop Free Topology with MEC NotDependant on STP
No HSRP/VRRP- 1 IP Address
Manage Single Node and Config
Manage Additional Routing Peers Manage Reduced Routing Peers
Increased Operational EfficiencySystem Virtualization Simplifying the Network
SiSi SiSi
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SiSi SiSi
Traditional L2/L3
Complex STP Configuration andManagement
HSRP/VRRP- 3 IP Address
Manage Two Nodes and Config
VSS
Loop Free Topology with MEC NotDependant on STP
No HSRP/VRRP- 1 IP Address
Manage Single Node and Config
Manage Additional Routing Peers Manage Reduced Routing Peers
Increased Operational EfficiencySystem Virtualization Simplifying the Network
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Core/Distribution
SiSi SiSi
Scale the System Bandwidth Capacity to 1.4 TbpsMulti-Chassis Etherchannel (MEC)
Idling or Underutilized Links inCampus Access
Standby Links or NIC Teaming onServers
Maximum Bandwidth withEtherchannel Load Balancing
Active/Active LACP to Servers toRedundant Switches
Unicast Flooding Due toAsymmetrical Routing
No Unicast Flooding
SiSi SiSi
Core/Distribution
Traditional L2/L3 VSS
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SiSi SiSi
Data Center Access
Scale the System Bandwidth Capacity to 1.4 TbpsMulti-Chassis Etherchannel (MEC)
Idling or Underutilized Links inCampus Access
Standby Links or NIC Teaming onServers
Maximum Bandwidth withEtherchannel Load Balancing
Active/Active LACP to Servers toRedundant Switches
Unicast Flooding Due toAsymmetrical Routing
No Unicast Flooding
SiSi SiSi
Data Center Access
Traditional L2/L3 VSS
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Non-Stop Communications: SSO
As of 12.2(33)SXH, there are over 90 protocols that are SSO-aware; theseinclude information such as ARP, DHCP Snooping, IP Source Guard,NAC Posture database, etc. In a VSS environment, failure of either VS willnot require this information to be re-populated again
Virtual SwitchSwitch 1 Switch 2
DHCP Snooping Binding TableIP Add MAC Add VLAN Interface
10.10.10.10 00:50:56:01:e1:02 10 Po10
172.26.18.2 00:02:b3:3f:3b:99 18 Po10
172.26.19.34 00:16:a1:c2:ee:32 19 Po20
10.10.10.43 00:16:cb:03:d3:44 10 Po20
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Non-Stop Communications: Link Failure
Access Uplink Failure~200 msec
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Non-Stop Communications: Link Failure
Active VS Failure~200 msec
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Cisco's virtual switch smashes throughput records
The results were impressive: VSS not only delivers a 20 fold improvement infailover times but also eliminates layer-2 and layer-3 redundancy protocols at thesame time
The performance numbers are even more startling: A VSS -enabled virtual switch
moved a record 770 million frames per second in one test, and routed more than5.6 billion unicast and multicast flows in another
Cisco's VSS is a significant advancement in the state of the switching art . Itdramatically improves availability with much faster recovery times, whilesimultaneously providing a big boost in bandwidth.
http://www.networkworld.com/reviews/2008/010308-cisco-virtual-switching-test.html
4.65
Published Jan 7 th 2008
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SiSi SiSi
VLAN X VLAN Y VLAN X VLAN Y
SiSi SiSi
Traditional L2/L3 VSS 1440
Virtual Switching System 1440Reduces Latency and Conserves Bandwidth
VSS Simplifies Inter-VLAN Traffic PatternMinimum Hop to Intra-Campus and Data Center Destination
Reduced Latency 50 % in distribution layer and simplifies traffic pattern
All links forwarding resulting in no wasted bandwidthEtherChannel on virtual switch member enhanced to prefer local link
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Architecture: Virtual Switch Link
The Virtual Switch Link is a standard 10GE link joining eachphysical switch together it is used to exchange control packetsand protocols synchronization packets between the two chassis.
Standby ControlPlane
Active ControlPlane
A Virtual Switch LinkBundle Can Consist of up to 8 x 10GE Links
VS Header L2 Hdr L3 Hdr Data CRC
Virtual SwitchLink
VSL is not a backplane bottleneck. Each switch fabricindependently operate at 720 Gbps for total system bandwidth
of 1.4T Gbps
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Architecture: Forwarding
In Virtual Switch Mode, while only one Control plane is active, bothData Planes (Switch Fabrics) are active, and as such, each can activelyparticipate in the forwarding of data at 720 Gbps.
Virtual Switch Domain
Switch 1: Control Plane Active Switch 2: Control Plane Hot Standby
Virtual Switch Domain
Switch 1: Data Plane Active Switch 2: Data Plane Active
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Architecture: Virtual Switch Domain
A Virtual Switch Domain ID is allocated during the conversion processand represents the logical grouping of the two physical chassis within aVSS; it is possible to have multiple VS Domains throughout the network
VS Domain 10
VS Domain 20 VS Domain 30
The configurable values for the domain ID are 1 255; it is alwaysrecommended to use a unique VS Domain ID for each VS Domain
throughout the network
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Operational Manageability: CLI
Only Active Switch Console is enabled. Standby Console isdisabled. Remote access via Telnet/SSH is responded by ActiveSwitch
StandbyControlPlane
ActiveControlPlane
Virtual SwitchStandby
Virtual SwitchActive
Virtual SwitchLink
Note: The Standby ConsoleIs Disabled and Cannot beUsed for Normal OperationalPurposes
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Operational Manageability:SNMP Support
Active Switch responds to SNMP Puts and Gets for bothphysical chassis data.
Virtual Switch Domain
Switch 1: Active Switch 2: Standby
SNMP Process Active SNMP Process Inactive
SNMP Server
SNMP GetsSNMP Puts
SNMP
Modified MIBs
SNMP NewMIBs
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Operational Manageability: NetFlow
In a VSS, with both Data Planes active, NetFlow data collection isperformed on each Supervisors PFC while NetFlow export is onlyperformed by the Control Plane on the VS Active
Virtual Switch Domain
VSL
Switch 1 Supervisor Switch 2 Supervisor
VS State: ActiveControl Plane: ActiveData Plane: ActiveNetFlow Collection: ActiveNetFlow Export: Active
VS State: StandbyControl Plane: StandbyData Plane: ActiveNetFlow Collection: ActiveNetFlow Export: Inactive
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Operational Manageability:Slots and Ports
After conversion, port definitions for switches within the Virtual SwitchDomain inherit the Chassis ID as part of their naming convention
Chassis-ID will always be either a 1 or a 2
PORT NUMBERING:
VSS# show ip interface briefInterface IP-Address OK? Method Status ProtocolVlan1 unassigned YES NVRAM up upPort-channel1 unassigned YES NVRAM up upTe1/1/1 10.1.1.1 YES unset up up
Te1/1/2 192.168.1.2 YES unset up upTe1/1/3 unassigned YES unset up upTe1/1/4 unassigned YES unset up upGigabitEthernet1/2/1 10.10.10.1 YES unset up upGigabitEthernet1/2/2 10.10.11.1 YES unset up up
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Introducing CiscoWorks LAN Mgmt Solution(LMS) 3.0.1 for Virtual Switching
Support for IOS ModularityCentralized Mgmt of VirtualSwitching Systems
VSS setup wizard
Inventory, Configuration andSoftware Image support of VSSenabled switches
Physical view of each VSSmember switch
Additional Enhancements
Identifies EOL/EOS devicesSimplifies IOS Modularity imagedeployments
Open portal framework and newworkflows for setup andtroubleshooting
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Introducing Catalyst 6500Virtual Switching Supervisor 720-10G
Enabled by Virtual SwitchingSupervisor 720-10G
1.44 Terabit System Scalability
Two integrated, line rate 10Gigabit Ethernet Uplink ports
Investment Enhancement ofCatalyst 6500/6500-E Switches
Rich services support such asNAM, firewall, wireless controller,NetFlow, MPLS/ EoMPLS
Enables End-To-End 10GbE Deployments withIntegrated Virtualized Services
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Deployment: Hardware Requirements
Virtual SwitchStandby
Virtual SwitchActive
Virtual SwitchLink
Only the 10GE ports on the following modules are ableto support a Virtual Switch Link
VS-S720-10G-3CVS-S720-10G-3CXL
WS-X6708-10G-3CWS-X6708-10G-3CXL
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Deployment: Hardware Requirements
Virtual SwitchStandbyVirtual SwitchActive
Virtual SwitchLink
Virtual SwitchDomain
Only WS-X67xxSeries Line Cards
Are Supportedat initial release
The Only Services ModulesSupported at FCS Arethe WS-SVC-NAM-1and WS-WVC-NAM-2Services Modules
Both E Series and Non-ESeries Chassis AreSupported
Dual Supervisor 720-10Gin Each Chassis NotSupported at initialrelease
Both Chassis RequireSingle Supervisor 720-10G
Both SupervisorsMust Be Running the12.2(33)SXH1 or laterRelease of Cisco IOS
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Deployment: Additional Considerations
Deployment ConsiderationsConnected nodes should alwaysbe dual-homedEtherChannel hash modified so thatlocal link will always have preferenceover remote link in same bundleECMP has also been modifiedto choose local link over link inother chassisUse LACP or ON mode of EtherChannel to connect to Serversand Non-Cisco devicesMaximum number of EtherChannellink bundles in Virtual Switch Domainis 128 in 12.2(33)SXH1Minimal traffic expected tocross VSL and hence Size number oflinks in VSL to meet local redundancyand traffic requirements
Virtual SwitchLink
MEC
MEC
MEC
MEC
Traffic Flow #1
Traffic Flow #2Traffic Flow #3
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Cisco Catalyst 6500 VSS 1440Network System Virtualization Innovation
DataCenter
WAN
SiSi SiSi SiSi SiSi SiSi SiSi
SiSi SiSi
SiSi SiSi SiSi SiSi SiSi SiSi
Internet
Before
WAN InternetDataCenter
After
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Catalyst 6500 VSS1440 Key Benefits
MaximizesBandwidthUtilization
Maximize system usage Maximize server usage
LowersLatency Optimized path selection
Increased throughput
SiSi SiSi
SimplifiesOperationalManageability
50% less management LMS 3.0 integration BoostsNon-Stop
Communications
Faster recovery No service disruption
Exceptional Investment Protection and Enhancement
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