Administrator Guide

VLANs 757
MLAG Primary Peer Configuration
1 Configure the MLAG primary switch.
Keepalives are disabled on the peer links (optional). The four peer-links are
placed in port-channel 3. Port-channel 1 is the northbound (partner 1)
MLAG interface in VPC 1 and port-channel 4 is the southbound (partner
2) interface in VPC 4. Finally, VPC is enabled and the VPC domain is set
to 1.
console#config
console(config)#interface Te1/0/1
console(config-if-Te1/0/1)#channel-group 3 mode active
console(config-if-Te1/0/1)#no keepalive
console(config-if-Te1/0/1)#exit
console(config)#interface Te1/0/2
console(config-if-Te1/0/2)#channel-group 3 mode active
console(config-if-Te1/0/2)#no keepalive
console(config-if-Te1/0/2)#exit
console(config)#interface Te1/0/3
console(config-if-Te1/0/3)#channel-group 3 mode active
console(config-if-Te1/0/3)#no keepalive
console(config-if-Te1/0/3)#exit
console(config)#interface Te1/0/4
console(config-if-Te1/0/4)#channel-group 3 mode active
console(config-if-Te1/0/4)#no keepalive
console(config-if-Te1/0/4)#exit
console(config)#interface Te1/0/19
console(config-if-Te1/0/19)#channel-group 1 mode active
console(config-if-Te1/0/19)#no keepalive
console(config-if-Te1/0/19)#exit
console(config)#interface Te1/0/23
console(config-if-Te1/0/23)#channel-group 4 mode active
console(config-if-Te1/0/23)#no keepalive
console(config-if-Te1/0/23)#exit
console(config)#interface port-channel 1
console(config-if-Po1)#vpc 1
console(config-if-Po1)#switchport mode trunk
console(config-if-Po1)#exit
console(config)#interface port-channel 3