VRRP: Increasing Reliability and Failover with the Virtual Router Redundance Protocol

3.3. Sniffed Data from VRRP Messages

This section displays some captured VRRP messages and interprets the values to give the reader a closer familiarity with VRRP messages. The source of our sniffer trace data discussed below is Janusis [1999]. Figure 3-4 displays a message dispatched by an owner/master.

Figure 3-4. A message from the owner

The specific values of Figure 3-4 are explained in Table 3-3. Note that we italicize the VRRP-relevant fields of the IP datagram. We alternately boldface the message fields to make it easier to recognize them.

Table 3-3. A VRRP Message Dispatched by an Owner

FIELD	HEX	DEC
Selected IP Fields
TTL	FF	255
Protocol ...