# Cisco VRRP Monitors status of Cisco VRRP enabled interfaces Check Info: * *service*: creates one item per VRRP ID and interface * *state*: **warning** if authentication is not enabled, admin state is not up, operational state changed or not master/backup, master ip address changed * *wato*: all monitoring states can be configured * *perfdata*: * Advertisement interval errors * Authentication failures * IP TTL errors (TTL not 255) * Invalid type field received * Address list errors * Invalid authentication type * Authentication type mismatch * Packet length errors Testetd with: IOS-XE 17.01.01 and IOS 15.1(4) **Note: don't work with some Catalyst switces (Packet length errors)** Sample output ![sample output](/doc/sample.png?raw=true "sample [SHORT TITLE]")