Layer 2 Switching Commands 601console(config-if-Po3)#switchport trunk allowed vlan 1-99,101-4093console(config-if-Po3)#vpc 2console(config-if-Po3)#exitconsole(config)#interface po3console(config-if-Po3)#switchport mode trunkconsole(config-if-Po3)#switchport trunk allowed vlan 1-99,101-4093console(config-if-Po3)#vpc 2console(config-if-Po3)#exitvpc domainUse the vpc domain command to enter into MLAG configuration mode. Thiscommand creates an MLAG domain and enters into MLAG configurationmode. Use the no form of the command to delete the VPC domain, disablepeer-keepalive and peer detection in the domain, and reset all the configuredparameters (role priority, VPC MAC address and VPC system priority) for theVPC domain.Syntaxvpc domain domain-id• domain-id—The MLAG domain instance. The range is 1-255.Default ConfigurationBy default, no MLAG domains are configured.Command ModesGlobal Configuration modeUser GuidelinesOnly one MLAG domain per MLAG is supported. This command creates aVPC domain with the specified domain-id and enters into the VPC domainconfiguration mode. Only one VPC domain can be created on a given device.The domain-id of the VPC domain should be equal to the one configured onthe other VPC peer with this device wants to form a VPC pair. The configuredVPC domain-ids are exchanged during role election and if they are configureddifferently on the peer devices, then VPC does not become operational.The administrator needs to ensure that the no two VPC domains share thesame VPC domain-id. The domain-id is used to derive the auto-generatedVPC MAC address used in the actor ID field in the LACP PDUs and STP
