# Monitoring the Configuration of VRRP Neighbors

#### Purpose

Display neighbor information to the VRRP routers. Neighbor is a router that shares a given VRID with the VRRP router. A neighbor is known to the VRRP router only when the neighbor becomes a master for an IP address and sends VRRP advertisements. If a router sharing the VRID has not yet become a master router, then the local router remains unaware of this neighbor and this command does not display that neighbor.

#### Action

To display information about all known neighbors to the VRRP routers:

    host1#show ip vrrp neighbor
    Interface: fastEthernet5/0.0 vrrpVrid: 1
      time discovered: 08/09/2001 07:44
      primary address: 10.0.0.1
      adv interval (sec): 1
      priority: 255 (owner)
      auth type: none
      assoc address(es): 10.0.0.1, 100.0.0.1, 101.0.0.1

    Interface: fastEthernet5/0.1 vrrpVrid: 11
      time discovered: 08/09/2001 07:44
      primary address: 11.0.0.1
      adv interval (sec): 1
      priority: 255 (owner)
      auth type: none
      assoc address(es): 11.0.0.1, 110.0.0.1, 111.0.0.1

#### Meaning

Table 26 lists the show ip vrrp neighbor command output fields.

Table 26: show ip vrrp neighbor Output Fields

Field Name | Field Description
--- | ---
Interface | Fast Ethernet, Gigabit Ethernet, or 10-Gigabit Ethernet interface specifier and VRID of neighbors known to the VRRP router.
time discovered | Date and time that the neighbor was detected
primary address | Primary IP address of neighbor
adv interval (sec) | VRRP advertisement interval in seconds
Priority | Priority status of VRRP router. If the priority value is 255, then the VRRP router is the master.
auth type | VRRP authentication type: none or text
assoc address(es) | IP addresses associated with the VRID that are advertised by the neighbor

#### Related Documentation

- VRRP Overview
- Before You Configure VRRP
- Configuring VRRP