Vrrp Components; Virtual Router; Ip Address Owner - Alcatel-Lucent 7705 Configuration Manual

VRRP Components

VRRP consists of the following components:

Virtual Router

A virtual router is a logical entity managed by VRRP that acts as a default router for hosts on
a shared LAN. It consists of a virtual router ID (VRID) and one or more IP addresses or
address across a common LAN. A VRRP router can back up one or more virtual routers.
The purpose of supporting multiple IP addresses within a single virtual router is for
multi-netting. This is a common mechanism that allows multiple local subnet attachments on
a single routing interface.
Up to four virtual routers are configurable on a single 7705 SAR interface. The virtual routers
must be in the same subnet. Each virtual router has its own VRID, state machine, and
messaging instance.

IP Address Owner

VRRP can be configured on a router in either owner or non-owner mode. The owner is the
VRRP router that has the virtual router's IP address(es) as real interface address(es). This is
the router that responds to packets addressed to one of the IP addresses for such things as
ICMP pings and TCP connections. All other virtual router instances participating in this
message domain must have the same VRID configured and cannot be configured as owner.
7705 SAR OS Router Configuration Guide
• Virtual Router
• IP Address Owner
• Primary Address
• Virtual Router Master
• Owner and Non-owner VRRP
• Configurable Parameters
VRRP
213