Manual:Interface/VRRP
VRRP official article
Sub-menu level: /interface vrrp
/interface vrrp
interface (string; Default: ) - interface name on which VRRP instance will be running run.
vrid (integer: 1..255; Default: 1) - Virtual Router identifier. Each Virtual router must have unique id number.
priority (integer: 1..254; Default: 100) - priority of VRRP node used in Master election algorithm. Higher number i higher priority. '255' is reserved to Router that owns IP and '0' is reserved for Master router to indicate that it is releasing responsibility.
interval (string; Default: 1) - VRRP update interval in seconds. Defines how often master sends advertisement packets.
preemption-mode (yes,no; Default: yes) - whether master node always has the priority. When set to 'no' backup node will not be elected to be a master until the current master fail even if the backup node has higher priority than the current master.
authentication (ah,none,simple; Default: none) - authentication method to use for VRRP advertisement packets.
| Type | Description |
|---|---|
| none | should be used only in low security networks (e.g., two VRRP nodes on LAN). |
| ah | IP Authentication Header. This algorithm provides strong protection against configuration errors, replay attacks, and and packet corruption/modification. Recommended when there is limited control over the administration of nodes on a LAN. |
| simple | uses clear text password. Protects against accidental misconfiguration of routers on local network. |
password (string; Default: ) - password required for authentication. Can be ignored if authentication is not used.
on-backup (string; Default: ) - script to execute when the node switch to backup state.
on-master (string; Default: ) - script to execute when the node switch to master state.
There are two ways to add scripts to on-backup and on-master:
- specify scripts name added to script repository
- write script directly by putting it in scopes '{ }'.