User's Manual

which router to undertake the forwarding task and the host in LAN is only required to configure

the default gateway for the virtual router.

VRRP will bring together a set of routers in LAN. It consists of multiple routers and is similar to a

virtual router in respect of function. According to the VLAN interface IP of different network

segments, it can be virtualized into multiple virtual routers. Each virtual router has an ID number

and up to 255 can be virtualized.

VRRP has the following characteristics:

 Virtual router has an IP address, known as the Virtual IP address. For the host in

LAN, it is only required to know the IP address of virtual router, and set it as the

address of the next hop of the default route.

 Host in the network communicates with the external network through this virtual

router.

 A router will be selected from the set of routers based on priority to undertake the

gateway function. Other routers will be used as backup routers to perform the

duties of gateway for the gateway router in case of fault of gateway router, thus to

guarantee uninterrupted communication between the host and external network

Monitor interface function of VRRP better expands backup function: the backup function can be

offered when interface of a certain router has fault or other interfaces of the router are

unavailable.

When interface connected with the uplink is at the state of Down or Removed, the router actively

reduces its priority so that the priority of other routers in the backup group is higher and thus the

router with highest priority becomes the gateway for the transmission task.

From navigation tree, select "Network >>VRRP" menu, then enter “VRRP” page.

Table 3-3-3 VRRP Parameters

VRRP

Function description: Configure parameters of VRRP.

Parameters

Description

Default

Enable VRRP-I

Click to enable VRRP function

Disable

Group ID

Select ID of router group (range: 1-255)

Priority

Select a priority (range: 1-254)

20 (the larger the numerical

value, the higher the priority)

Set an advertisement interval.

60 s