Siemens S223, S323 Routing Information Protocol RIP, Enabling RIP, A50010-Y3-C150-2-7619 361

User Manual	UMN:CLI
SURPASS hiD 6615 S223/S323 R1.5

10.3Routing Information Protocol (RIP)

Routing Information Protocol (RIP), as it is more commonly used than any other Routing Protocols, for use in small, homogeneous networks. It is a classical distance-vector rout- ing protocol with using hop count. RIP is formally defined in documents in Request For Comments (RFC) 1058 and Internet Standard (STD) 56. As IP-based networks became both more numerous and greater in size, it became apparent to the Internet Engineeing Task Force (IETF) that RIP needed to be updated. Consequently, the IETF released RFC 1388, RFC 1723 and RFC 2453, which described RIP v2 (the second version of RIP).

RIP v2 uses broadcast User Datagram Protocol (UDP) data packets to exchange routing information. The hiD 6615 S323 sends routing information and updates it every 30 sec- onds. This process is termed advertised. If a router does not receive an update from an- other router for 180 seconds or more, it marks the routes served by the non-updating router as being unusable. If there is still no update after 120 seconds, the router removes all routing table entries for the non-updating router.

The metric that RIP uses to rate the value of different routes is hop count. The hop count is the number of routers that should be traversed through the network to reach the desti- nation. A directly connected network has a metric of zero; an unreachable network has a metric of 16. This short range of metrics makes RIP an unsuitable routing protocol for large networks.

A router that is running RIP can receive a default network via an update from another router that is running RIP, or the router can source (generate) the default network itself with RIP. In both cases, the default network is advertised through RIP to other RIP neighbors. RIP sends updates to the interfaces in the specified networks.

If an interface's network is not specified, it will not be advertised in any RIP update. The hiD 6615 S323 supports RIP version 1 and 2.

!	Routing functionalities such as RIP, OSPF, BGP and PIM-SM are only available for hiD
	6615 S323. (Unavailable for hiD 6615 S223)

10.3.1Enabling RIP

To use RIP protocol, you should enable RIP.

Step 1

To open Router Configuration mode, use the following command on Global Configuration mode.

Command	Mode	Description
router rip		Opens Router Configuration mode and operates RIP
		routing protocol.
	Global
no router rip		Restores all configurations involved in RIP to the de-
		fault.

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