RIP is a routing protocol based on distance vector algorithm.

RIP protocol is suitable for small and medium-sized networks and is divided into RIPv 1 and RIPv2.

RIP supports such working mechanisms as split horizon, poison reversal and trigger update to prevent routing loops.

RIP protocol is based on UDP transmission, and the port number is 520.

RIPv2 is a classless routing protocol.

RIPv2 protocol message carries mask information and supports VLSM (Variable Length Subnet Mask) and CIDR.

RIPv2 supports multicast to send routing update messages, and the multicast address is 224.0.0.9, which reduces the consumption of network and system resources.

RIPv2 supports the verification of protocol messages, and provides plaintext verification and MD5 verification to enhance security.