Overview; Configuration Parameters - HP procurve 8100fl series Management And Configuration Manual

VRRP Configuration

Overview

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Overview

This chapter explains how to set up and monitor the Virtual Router
Redundancy Protocol (VRRP) on the switch. VRRP is defined in RFC 2338.
In many networks, end hosts are often configured to send packets to a
statically configured default router. If this default router becomes unavailable,
all the hosts that use it as their first hop router become isolated on the network.
VRRP was developed as a way to ensure the availability of an end node's
default router by assigning the IP address that end hosts use as their default
route to a "virtual router." A Master router is assigned to forward traffic
designated for the virtual router. If the Master router should become
unavailable, a backup router takes over and begins forwarding traffic for the
virtual router. As long as one of the routers in a VRRP configuration is up, the
IP addresses assigned to the virtual router are always available, and the end
hosts can send packets to these IP addresses without interruption. Physical
ports on a router are owned by that router. Using VRRP, you can configure
other routers to take over as virtual routers for ports they do not own, but
these virtual routers can never be owners of these ports.
As of this release, the 8100fl switch is limited to fifteen virtual router instances
per interface (VLAN, LAG or physical port).

Configuration Parameters

This section covers settings you can modify in a VRRP configuration, including
backup priority, advertisement interval, and pre-empt mode. The following
examples assume that you wish to enable and configure VRRP on VLAN 15.
To configure the VRRP settings for this interface, you must first enter the
appropriate VLAN configuration context as shown below:
ProCurve(config)#interface vlan 15
ProCurve(config-interface-vlan15)#