Overview RIPng

RIPng, also known as next-generation RIP protocol, is a dynamic routing protocol used by the IPv6 networks to provide routing information for the IPv6 packet forwarding. RIPng is extended on RIP-2. The working principle of the RIPng protocol is basically the same as that of the RIP protocol. In order to adapt to the IPv6 network, RIPng has made the following changes to the original RIP protocol:

• UDP port number: The RIPng protocol uses UDP port number 521 to send and receive the protocol packets;
• Multicast address: The RIPng protocol uses FF02::9 as the multicast address of the RIPng router in the local range of the link, and does not support broadcasting.
• Prefix length: The destination address of the RIPng protocol route uses the 128-bit prefix length;
• Next-hop address: The RIPng protocol uses 128-bit IPv6 address;
• Source address: The RIPng protocol uses the link local address FE80:/10 as the source address to send the RIPng protocol packet.

The protocol specifications related to RIPng include RFC2080 and RFC2081.