Rip Message Format - H3C S5500-EI series Operation Manual

Operation Manual – IPv4 Routing
H3C S5500-EI Series Ethernet Switches

2.1.4 RIP Message Format

I. RIPv1 message format
A RIPv1 message consists of a header and up to 25 route entries.
Figure 2-1
Figure 2-1 RIPv1 Message Format
Command: Type of message. 1 indicates request, and 2 indicates response.
Version: Version of RIP, 0x01 for RIPv1.
AFI: Address Family Identifier, 2 for IP.
IP Address: Destination IP address of the route. It can be a natural network,
subnet or a host address.
Metric: Cost of the route.
II. RIPv2 message format
The format of RIPv2 message is similar with RIPv1.
Figure 2-2 RIPv2 Message Format
The differences from RIPv1 are stated as following.
Version: Version of RIP. For RIPv2 the value is 0x02.
Route Tag: Route Tag.
IP Address: Destination IP address. It could be a natural network address, subnet
address or host address.
Subnet Mask: Mask of the destination address.
shows the format of RIPv1 message.
Figure 2-2
2-4
Chapter 2 RIP Configuration
shows it.