796 CHAPTER 43: VRRP CONFIGURATION COMMANDSUse the undo vrrp ping-enable command to disable the function.By default, the ping function is enabled.You can only use the commands before configuring any virtual router. If a virtualrouter is already established on the switch, it is not allowed to use the vrrpping-enable command the undo vrrp ping-enable command to modify theconfiguration any more.Example# Enable to ping the virtual IP address of the virtual router.[SW8800] vrrp ping-enablevrrp un-check ttl Syntaxvrrp un-check ttlundo vrrp un-check ttlViewVLAN interface viewParameterNoneDescriptionUse the vrrp un-check ttl command to disable the check of TTL value of VRRPpacket. Use the undo vrrp un-check ttl command to enable the check of TTLvalue of VRRP packet.The TTL value must be 225. If the Backup switch finds TTL is not 225 whenreceiving VRRP packet, the packet will be discarded.By default, the switch checks TTL value of VRRP packets.Example# Disable to check TTL value of VRRP packet.[3Com-vlan-interface2] vrrp un-check ttlvrrp vrid preempt-mode Syntaxvrrp vrid virtual-router-ID preempt-mode [ timer delay delay-value ]undo vrrp vrid virtual-router-ID preempt-modeViewVLAN interface viewParametervirtual-router-ID: VRRP virtual router ID, ranging from 1 to 255.delay-value: Delay in seconds, ranging from 0 to 255.
