612 MLAGThe Dual Control Plane Detection Protocol is a UDP-based protocol. Theadministrator must configure this protocol on an IP interface with a VLANthat is not shared with any of the MLAG interfaces. This can include the out-of-band port. When enabled, the dual-control plane detection protocol sendsa control plane detection message to the peer once every second. Themessage is unidirectional and contains the sender’s MAC address. When aswitch receives a control plane detection message it sets the ‘peer is UP’variable to TRUE to indicate that a peer is detected.Exampleconsole(config)#vpc domain 1console(config-vpc 1)#peer-keepalive enableconsole(config-vpc 1)#peer-keepalive destination 192.168.0.2 source192.168.0.1console(config-vpc 1)#peer detection enableconsole(config-vpc 1)#exitpeer-keepalive enableUse the peer-keepalive enable command to enable the peer keep-aliveprotocol on the peer link. When enabled, if an MLAG switch does not receivekeepalive messages from the peer within the timeout value and DCPDP isdisabled, the switch begins the process of transitioning to the primary role (ifstandby).Use the no form of the command to disable the peer keep-alive protocol.Syntaxpeer-keepalive enableno peer-keepalive enableDefault ConfigurationThe peer keep-alive protocol is disabled by default.Command ModesMLAG Domain Configuration mode
