Znyx Networks bh5700 manual Vrrpd Virtual Router Redundancy Protocol Daemon

vrrpd

NAME

vrrpd – Virtual Router Redundancy Protocol Daemon

SYNOPSIS

vrrpd -i ifname -v vrid [-f piddir] [-s] [-a auth] [-p prio] [-nhb] [-I ifname] [-d delay] [-m address] [-M ] [-B]

[-S script] [-c conf_file] [-D level] ipaddr

DESCRIPTION

vrrpd is an implementation of Virtual Redundant Routing Protocol (VRRPv2) as specified in RFC2338. It runs in Linux user space. In short, VRRP is a protocol that elects a Master server on a LAN to which the Master answers to a virtual IP address. If it fails, a Backup server takes over the IP address.

VRRP specifies an election protocol that dynamically assigns responsibility for a virtual router to one of the VRRP routers on a LAN. The VRRP router controlling the IP address(es) associated with a virtual router is called the Master, and forwards packets sent to these IP addresses. The election process provides dynamic failover in the forwarding responsibility should the Master become unavailable. This allows any of the virtual router IP addresses on the LAN to be used as the default first hop router by end-hosts. The advantage gained from using VRRP is a higher availability default path without requiring configuration of dynamic routing or router discovery protocols on every end-host.

OPTIONS

The following options are supported by vrrpd:

- h display the usage line

-n Don’t use the virtual MAC address -b Run vrrpd in foreground

-i <ifname> the interface name on which to run the Virtual

Router.	Machines connected			with the	named interface will see
the Virtual Router			Address move with		the Master switch
-I <ifname>		the interface name on which to communicate
with other VRRP		routers for		management of the Virtual Router
(default	is the	-i	interface)

-v <vrid> the id of the Virtual Router Identifier [1-255]. This value must be a unique value, one per Virtual Router. In other words there is a unique vrid to ifname associated with

Ethernet Switch Blade User's Guide release 3.2.2j page 194