...
console(config-vpcdomain)#peer keepalive
console(config-vpcdomain)#peer keepalive timeout 25
Задаем role priority для коммутатора, коммутатор с наименьшим приоритетом становится Primary.
...
vpc
vpc domain 1
peer detection
peer detection interval 200
peer detection timeout 700
peer detection ipaddr 1.1.1.1 1.1.1.2
peer keepalive
peer keepalive timeout 25
role priority 1
peer link Port-Channel 1
exit
!
vpc group 1
domain 1
vpc-port Port-Channel 2
exit
...