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4500交换机配置VSS的一些注意事项：
1) 两台设备的板卡型号必须一致（'WS-X44xy' 'WS-X42xy'开头的板卡不支持 ）
2）软件要求：Cisco IOS XE 3.4.0SG 和 ROMMON IOS Version 15.0(1r) SG7以上
3）License要求：
备注：由于文档比较老，现在4506的型号已经是SUP8E，SUP8E也是支持的
image1.png
在配置VSS前，请验证硬件、软件和License信息
sh ver | in IOS
sh ver | in ROM
sh license image levels
配置步骤
第一步：分配虚拟交换机域和交换机编号
SW1#conf t
Enter configuration commands, one per line. End with CNTL/Z.
SW1(config)#switch virtual domain 10
Domain ID 10 config will take effect only after the exec command 'switch convert mode virtual' is issued
SW1(config-vs-domain)#switch 1
SW1(config-vs-domain)#exit
SW1(config)#
SW2#conf t
Enter configuration commands, one per line. End with CNTL/Z.
SW2(config)#switch virtual domain 10
Domain ID 10 config will take effect only after the exec command 'switch convert mode virtual' is issued
SW2(config-vs-domain)#switch 2
SW2(config-vs-domain)#exit
SW2(config)#
第二步：配置VSL Port Channel
注意：两台设备的port-channel编号必须不能相同
SW1(config)#int port-channel 5
SW1(config-if)#switchport
SW1(config-if)#switch virtual link 1
SW1(config-if)#no shut
SW1(config-if)#exit
SW2(config)#int port-channel 10
SW2(config-if)#switchport
SW2(config-if)#switch virtual link 2
SW2(config-if)#no shut
SW2(config-if)#exit
第三步：配置VSL端口
SW1(config)#int range ten1/1 - 2
SW1(config-if-range)#switchport mode trunk
SW1(config-if-range)#channel-group 5 mode on
WARNING: Interface tenGigabitEthernet1/1 placed in restricted config mode. All extraneous configs removed! WARNING: Interface tenGigabitEthernet1/2 placed in restricted config mode. All extraneous configs removed!
SW1(config-if-range)#exit
SW2(config)#int range ten1/1 - 2
SW2(config-if-range)#switchport mode trunk
SW2(config-if-range)#channel-group 10 mode on
WARNING: Interface tenGigabitEthernet1/1 placed in restricted config mode. All extraneous configs removed! WARNING: Interface tenGigabitEthernet1/2 placed in restricted config mode. All extraneous configs removed!
SW2(config-if-range)#exit
第四步：将当前的交换机模式切换为虚拟交换机（VSS）模式
SW1#switch convert mode virtual
This command will convert all interface names to naming convention "interface-type switch-number/slot/port", save the running config to startup-config and reload the switch. Do you want to proceed? [yes/no]: yes Converting interface names
SW2#switch convert mode virtual
This command will convert all interface names to naming convention "interface-type switch-number/slot/port", save the running config to startup-config and reload the switch. Do you want to proceed? [yes/no]: yes Converting interface names
验证
SW1#sh switch virtual
SW1#sh switch virtual role
SW1#sh switch virtual link
SW1#sh switch virtual link port-channel
