cisco 6500-virtual switch sysetm-s6367_vss_tech_talk_final

8/7/2019 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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2008 Cisco Systems, Inc. All rights reserved. 2

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



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



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



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



Non-Stop Communications: Link Failure

Access Uplink Failure~200 msec



Non-Stop Communications: Link Failure

Active VS Failure~200 msec



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



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



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



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.


Switch 1: Control Plane Active Switch 2: Control Plane Hot Standby


Switch 1: Data Plane Active Switch 2: Data Plane Active



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



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



Operational Manageability:SNMP Support

Active Switch responds to SNMP Puts and Gets for bothphysical chassis data.


Switch 1: Active Switch 2: Standby

SNMP Process Active SNMP Process Inactive

SNMP Server

SNMP GetsSNMP Puts

SNMP

Modified MIBs

SNMP NewMIBs



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


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



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



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



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



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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