User`s manual

EDR-G903/G902 Features and Functions
3-25
Virtual Router Redundancy Protocol (VRRP)
VRRP Settings
The Virtual Router Redundancy Protocol (VRRP) feature can solve the problem with static configuration. VRRP
enables a group of routers to form a single virtual router with a virtual IP address. The LAN clients can then be
configured with the virtual router’s virtual IP address as their default gateway. The virtual router is the
combination of a group of routers, and is also known as a VRRP group.
Enable
Setting Description Factory Default
Enable Enables VRRP Disable
VRRP Interface Setting Entry
Setting Description Factory Default
Enable Enables VRRP entry Disabled
Virtual IP L3 switches / routers in the same VRRP group must be set to
the same virtual IP address as the VRRP ID. This virtual IP
address must belong to the same address range as the real IP
address of the interface.
0.0.0.0
Virtual Router ID Virtual Router ID is used to assign a VRRP group. The L3
switches / routers, which operate as master / backup, should
have the same ID. Moxa L3 switches / routers support one
virtual router ID for each interface. IDs can range from 1 to
255.
0
Priority Determines priority in a VRRP group. The priority value range is
1 to 255 and the 255 is the highest priority. If several L3
switches / routers have the same priority, the router with
higher IP address has the higher priority. The usable range is “1
to 255”.
100
Preemption Mode Determines whether a backup L3 switch / router will take the
authority of master or not.
Enabled
Track Interface The Track Interface is used to track specific interface within the
router that can change the status of the virtual router for a
VRRP Group. For example, the WAN interface can be tracked
and if the link is down, the other backup router will
become the
new master of the VRRP group.
Disable