Protocol Information; Ip Field Descriptions; Vrrp Field Descriptions; Vrrp States - Alcatel OmniSwitch 6624 Troubleshooting Manual

Troubleshooting Virtual Router Redundancy Protocol (VRRP)

Protocol Information

This next section describes how VRRP routers exchange information.

IP Field Descriptions

Source Address
Destination Address
TTL
Protocol

VRRP Field Descriptions

Version
Type
VRID
Priority
Count IP Address
Authentication Type

VRRP States

There are only 3 states that a VRRP Router can be in. They are initialize, Master, and Back-up.
OmniSwitch Troubleshooting Guide
The primary address of the interface the packet is being sent from.
The IP Multicast address 224.0.0.18
Must be 255 or packet is dropped.
112 decimal.
Specifies the VRRP version of the packet. Currently this is version 2.
There is only one type. 1-Advertisement. A packet set to anything other
than 1 is discarded.
The virtual Router Identifier.
Priority field can be 1-255 decimal. Higher Priorities have preference.
255 is always used by a VRRP router that uses the Virtual IP address as
a real address on an interface. Default is 100.
The number of IP addresses in this advertisement.
Indicates the method of authentication. As mentioned before, there are 3
types: No Authentication, Simple Text Password, IP authentications.
September 2005
Protocol Information
page 13-3