TP-Link T3700G-28TQ, Руководство пользователя

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RIPv2 is a classless routing protocol. Compared with RIPv1, RIPv2 has the following
advantages.

Supporting route tags. Route tags are used in routing policies to flexibly control
routes.

Supporting masks, route summarization and Classless Inter-Domain Routing (CIDR).

Supporting designated next hops to select the best next hops on broadcast networks.

Supporting multicast routing update to reduce resource consumption.

Supporting plain text authentication and MD5 authentication to enhance security.
Note
：
RIPv2 has two types of message transmission: broadcast and multicast. Multicast is the default
type using 224.0.0.9 as the multicast address. The interface working in the RIPv2 broadcast
mode can also receive RIPv1 messages.

RIP Message Format
1) RIPv1 message format
A RIPv1 message consists of a header and up to 25 route entries. The following figure shows
the format of RIPv1 message.
Figure 10-27 RIPv1 Message Format
The detailed explanations of each field are stated as following:

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.
2) RIPv2 message format
The format of RIPv2 message is shown as the following figure. It is similar to RIPv1.
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