Routing Information Protocol(RIP)

Routing Information Protocol (RIP) is an exchange between the gateway and host routing information standards. RIP is an interior gateway protocol. In the national network such as the current Internet, many for the entire network with routing protocols. As the formation of an autonomous system for each network, has its own routing technology, different AS systems, routing technology is different.
Introduction
(RIP/RIP2/RIPng: Routing Information Protocol) as an internal gateway protocol or IGP (Interior Gateway Protocol) routing protocol used in AS systems. AS system connected by a special agreement, in which the earliest such an agreement is "EGP" (exterior gateway protocol), is still used in the Internet, such agreements are often regarded as the internal AS routing protocol. RIP mainly designed to moderate the use of similar technology and the size of the network to work together. Therefore, little change through the wiring connection speed, RIP relatively simple for the campus network and regional network, but does not apply to the case of complex networks. RIP 2 comes from the RIP, RIP protocol is a supplementary agreement, mainly for the expansion of RIP 2 loads of useful information on the amount of information, while increasing its safety performance. RIP 2 is based on UDP protocol. In RIP2, the route selection process by each host to send and receive data from UDP port 520 packets. RIP feature (1) only and the neighboring routers to exchange information. If the communication between the two routers without another router, then the two routers are adjacent. RIP the agreement, not between non-adjacent routers exchange information. (2) routers exchange of information is currently known to the router, all of the information. That is its own routing table. (3) exchange of routing information at a fixed time, such as every 30 seconds, then the router based on routing information received with the new routing table.
For
RIP and RIP 2 is mainly used in the IPv4 network, and RIPng for IPv6 networks mainly. This article focuses on RIP and RIP 2. RIPng: Routing Information Protocol next generation (used in IPv6) (RIPng: RIP for IPv6) RIPng and RIP 1 and RIP 2 the two versions are not compatible.
Applications
RIP (Routing information Protocol) is the application of an earlier, more widespread use of Interior Gateway Protocol (Interior Gateway Protocol, referred to as the IGP), for small similar network, is a typical distance vector (distance-vector) protocol. Documentation See RFC1058, RFC1723. RIP by broadcasting UDP packets to exchange routing information every 30 seconds to send a routing information updates. RIP hop count available (hop count) route as a scale to measure distance, hop count is a packet must reach the target number of the router. If the two goals to the same or different non-constant bandwidth router, but the same hop count, then the RIP that is equidistant from the two routes. RIP hop count up to 15, that is the source and purpose of the interconnection of the router to pass the maximum number of 15, 16 said they did not hop up.