H3C Technologies H3C S12500 Series Switches - Manual (Page 306)

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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 101 RIPng basic packet format
• 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 types of RTEs in RIPng are as follows:
• 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 102 Next hop RTE format
IPv6 next hop address is the IPv6 address of the next hop.
Figure 103 IPv6 prefix RTE format
• IPv6 prefix—Destination IPv6 address prefix
• Route tag—Route tag
• Prefix length—Length of the IPv6 address prefix
• Metric—Cost of a route
Command
Route table entry 1 (20 octets)
Version Must be zero
Route table entry n (20 octets)
0 7 15 31