H3C Technologies H3C MSR 50 - Manual (Page 65)

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VRRP packets are encapsulated in IP packets, with the protocol number being 112. Figure 19 shows the
IPv4 VRRPv2 packet format, Figure 20 shows the IPv6 VRRPv2 packet format, and Figure 21 shows the
IPv4/IPv6 VRRPv3 packet format.
Figure 19 IPv4 VRRPv2 packet format
Figure 20 IPv6 VRRPv2 packet format
...
Version Type Virtual Rtr ID Priority Count IPv6 Addrs
Auth Type Adver Int Checksum
IPv6 address 1
Authentication data 1
Authentication data 2
IPv6 address n
0 7 15 23 31 3