6500 and 4500 VSS support this feature, the same as 6500, under the premise of qualified software and hardware, configured by the system, so that the two chassis 4500 becomes a logical unified whole. The brief configuration steps:
VSS physical topologies:
First, configure the VSS core switch 4503-1
(1) 45-1 View current operation mode core switch:
Switch-1 # Show Switch Virtual
Switch Mode: Standalone
（2）配置VSS域名与VSS主机号：
switch-1(config)#switch virtual domain 100`
switch-1(config-vs-domain)#switch 1
switch-1(config-vs-domain)#switch 1 priority 150
switch-1(config-vs-domain)#exit
（3）配置VSL链路：
switch-1(config)#interface port-channel 63
switch-1(config-if)#switchport
switch-1(config-if)#switch virtual link 1
switch-1(config-if)#no shutdown
switch-1(config-if)#exit
switch-1(config)#exit
Interface TenGigabit1 (4) on the core switches 4503-1 and 4503-2 connected to the / 1/1 to TenGigabit1 / 1/2 configured as an EtherChannel
Switch-1 (config) #interface Range TenGigabitEthernet 1/1 / 1-2
switch- . 1 (IF-config-Range) #switchport MODE Trunk
Switch-. 1 (IF-config-Range) Group # Channel 63 is MODE ON-
Switch-. 1 (IF-config-Range) #no the shutdown
Switch-. 1 (config-IF- range) #exit
(5) The operating mode switch is changed to VSS mode (after determining that the switch will automatically restart):
Switch # 1-the Write
Switch-1 # Switch the MODE Virtual Convert For
the Do you want to the proceed [yes / NO]:? The y-``
Second, configure VSS core switch 4503-2
(1) 45-2 View current operation mode core switch:
Switch-2 # Show Switch Virtual
Switch Mode: Standalone
Switch-2 #
(2) Configuration and VSS VSS Domain Host Number:
Switch-2 (config) #switch Virtual Domain 100
Switch-2 (config-VS-Domain) #switch 2
Switch-2 (config-VS-Domain) #exit
（3）配置VSL链路：
switch-2(config)#interface port-channel 64
switch-1(config-if)#switchport
switch-2(config-if)#switch virtual link 2
switch-2(config-if)#no shutdown
switch-2(config-if)#exit
switch-2(config)#exit
(4) the core switch interface TenGigabit1 4503-2 and 4503-1 connected to the / 1/1 to TenGigabit1 / 1/2 configured as an EtherChannel
Switch-2 (config) #interface Range TenGigabitEthernet 1/1 / 1-2
switch- . 1 (IF-config-Range) #switchport MODE Trunk
Switch-2 (IF-config-Range) Group # 64-Channel MODE ON
Switch-2 (IF-config-Range) #no the shutdown
Switch-2 (config-IF- range) #exit
(5) The operating mode switch is changed to VSS mode (after determining that the switch will automatically restart):
Switch-2 # the Write
Switch-2 # Switch the MODE Virtual Convert For
the Do you want to the proceed [yes / NO]:? The y-
===============================================
最后检查：
switch virtual domain 100
switch mode virtual
switch 1 priority 150
mac-address use-virtual
===========================
View status:
show switch virtual # View job status
vss roles show switch virtual role # View the switch
show switch virtual link # View the switch vsl link
show etherchannel summary # View etherchannel state
show redundancy states # to view the current status of SSO
Fault test:
. 1, Redundancy Force-switchover hand failover #
2, power off test
3, VSL link failure failover
============== ============== optional
dual Internet ports that automatically detect // must be non-VSL
Switch(config)# switch virtual domain 100
Switch(config-vs-domain)# dual-active detection fast-hello
Switch(config-vs-domain)# exit
Switch(config)# interface fastethernet 1/2/40
Switch(config-if)# dual-active fast-hello
WARNING: Interface FastEthernet1/2/40 placed in restricted config mode. All extraneousconfigs removed!
Switch(config-if)# no shutdown
Switch(config-if)# exit
Switch(config)# exi
检查：show run interface fastethernet 1/2/40