Virtual Router Redundancy Protocol (VRRP)
Displaying VRRP Configuration and Statistics Data
• Mismatched Interval Pkts: The number of VRRP
packets received from other routers (since the last
reboot) with an advertisement interval that is differ-
ent from the interval configured on the current VR.
(Note that VRRP packets received with an interval
mismatch are dropped.
• Mismatched IP TTL Pkts: The number of VRRP
packets received with the IP TTL field not set to 255.
Such packets are dropped.
• Near Failovers: Tracks the occurrence of “near
failovers” on the Backup VRRP routers. This makes
visible any difficulties the VRRP routers are having
receiving the “heartbeat” advertisement from the Mas-
ter router. A “near failover” is one that is within one
missed VRRP advertisement packet of beginning the
Master determination process.
• Become Master: The number of times the VR has
become the Master since the last reboot.
• Zero Priority Tx: The number of VRRP advertise-
ment packets sent with the priority field set to 0 (zero).
• Bad Type Pkts: The number of VRRP packets
received with packet type not equal to 1 (that is, not
an advertisement packet.)
• Mismatched Addr List Pkts: The number of VRRP
packets received wherein the list of virtual IP
addresses doesn’t match the locally configured virtual
IP addresses for a VR.
• Mismatched Auth Type Pkts: The number of VRRP
packets received with the authentication type not
equal to 0 (zero, which is no authentication).
Note that show vrrp and show vrrp statistics give the same output.
For example, the following output shows the VRRP statistics on a router
having one VR (VR 1 in VLAN 10) configured.
6-41
