HP VPN Firewall Appliances Appendix Protocol Reference

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RIPng packet format
Basic format
A RIPng packet consists of a header and multiple route table entries (RTEs). The maximum number of RTEs
in a packet depends on the IPv6 MTU of the sending interface.
Figure 32 RIPng basic packet format
Packet header description:
• Command—Type of message. 0x01 indicates Request, 0x02 indicates Response.
• Version—Version of RIPng. It can only be 0x01.
• RTE—Route table entry. It is 20 bytes for each entry.
RTE format
The following are types of RTEs in RIPng:
• Next hop RTE—Defines the IPv6 address of a next hop.
• IPv6 prefix RTE—Describes the destination IPv6 address, route tag, prefix length, and metric in the
RIPng routing table.
Figure 33 Next hop RTE format
IPv6 next hop address is the IPv6 address of the next hop.
Figure 34 IPv6 prefix RTE format
IPv6 prefix RTE format description:
• IPv6 prefix—Destination IPv6 address prefix
• Route tag—Route tag