September 2002
Intermediate to advanced
560 pages
13h 16m
English
book
VRRP: Increasing Reliability and Failover with the Virtual Router Redundance Protocol
by Ayikudy Srikanth, Adnan Adam Onart
Content preview from VRRP: Increasing Reliability and Failover with the Virtual Router Redundance Protocol
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3.2. Message Exchange
VRRP as a protocol specifies certain rules to regulate the behavior of the artifacts implementing the protocol. Some of the rules apply to the transmission and reception of the VRRP messages. In this section we'll discuss these message exchange rules.
3.2.1. VRRP Message Reception
The following MUST be verified at the VRRP packet reception:
IP TTL is 255.
VRRP version is 2.
The packet is complete.
The checksum is correct.
VRID is configured on the receiving interface.
The recipient is not the IP address owner.
The authentication type matches the configured type.
After verifying the type of authentication, the VRRP router must perform the authentication using the specified method. As indicated, these verifications and the authenticity ...
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