Использование VPC и VRRP позволяет создать отказоустойчивый сегмент сети, на котором реализована маршрутизация трафика, где в качестве шлюза используется пара VPC коммутаторов.
Конфигурация SW1:
vlan database
vlan 100,200
exit
!
vpc
vpc domain 1
peer detection
peer detection ipaddr 1.1.1.1 1.1.1.2
peer keepalive
role priority 1
peer link Port-Channel 1
exit
!
vpc group 1
domain 1
vpc-port Port-Channel 2
exit
!
vpc group 2
domain 1
vpc-port Port-Channel 3
exit
!
interface gigabitethernet1/0/1
channel-group 2 mode auto
exit
!
interface gigabitethernet1/0/2
channel-group 3 mode auto
exit
!
interface gigabitethernet1/0/3
ip address 1.1.1.2 255.255.255.252
exit
!
interface TengigabitEthernet 1/0/1
channel-group 1 mode auto
exit
!
interface Port-channel2
switchport mode trunk
switchport trunk allowed vlan add 100
exit
!
interface Port-channel3
switchport mode trunk
switchport trunk allowed vlan add 200
exit
!
interface vlan 100
ip address 10.2.0.2 255.255.255.0
vrrp 1 ip 10.2.0.1
no vrrp 1 shutdown
exit
!
interface vlan 200
ip address 20.2.0.2 255.255.255.0
vrrp 1 ip 20.2.0.1
no vrrp 1 shutdown
exit
Конфигурация SW2:
vlan database
vlan 100,200
exit
!
vpc
vpc domain 1
peer detection
peer detection ipaddr 1.1.1.2 1.1.1.1
peer keepalive
role priority 1
peer link Port-Channel 1
exit
!
vpc group 1
domain 1
vpc-port Port-Channel 2
exit
!
vpc group 2
domain 1
vpc-port Port-Channel 3
exit
!
!
interface gigabitethernet1/0/1
channel-group 2 mode auto
exit
!
interface gigabitethernet1/0/2
channel-group 3 mode auto
exit
!
interface gigabitethernet1/0/3
ip address 1.1.1.2 255.255.255.252
exit
!
interface TengigabitEthernet 1/0/1
channel-group 1 mode auto
exit
!
interface Port-channel2
switchport mode trunk
switchport trunk allowed vlan add 100
exit
!
interface Port-channel3
switchport mode trunk
switchport trunk allowed vlan add 200
exit
!
interface vlan 100
ip address 10.2.0.1 255.255.255.0
vrrp 1 ip 10.2.0.1
no vrrp 1 shutdown
exit
!
interface vlan 200
ip address 20.2.0.1 255.255.255.0
vrrp 1 ip 20.2.0.1
no vrrp 1 shutdown
exit
Более подробную настройку VRRP и VPC по отдельности, с описанием всех команд, можно прочитать также в базе знаний.