Справочник Пользователя для Asante Technologies 35516

 

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The Routing Information Protocol (RIP) is a commonly used interior gateway protocol (IGP) created for use 
in small, homogeneous networks. It is a distance-vector routing protocol, documented in RFC 1058. 
 
RIP uses broadcast User Datagram Protocol (UDP) data packets to exchange routing information. The 
IC35516 sends, or advertises, routing information updates every 30 seconds. If a router does not receive an 
update from another router for 180 seconds or more, it will mark the routes served by the non-updating 
router as being unusable. If there is still no update after another 120 seconds, the router will remove all 
routing table entries for the non-updating router. 
 
RIP uses the metric hop count to rate the value of different routes. The hop count is the number of routers 
that can be traversed in a route. A directly connected network has a metric of zero; an unreachable network 
has a metric of 16. This makes RIP an unsuitable routing protocol for large networks with many routers. 
 
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 the default network itself with RIP. In both cases, the default network is 
advertised 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 IC35516 supports RIP 
Version 2. 
 

 
RIP must be enabled before carrying out any other of the RIP commands. To enter router configuration 
mode for RIP, start in global configuration mode and enter the following command(s): 
 
Router(config)# 
Router(config)# router rip 
Router(config-rip-router)# 
 
The network command enables RIP interfaces between certain numbers of a special network address. For 
example, if the network for 10.0.0.0/24 is RIP enabled, this would result in all the addresses from 10.0.0.0 to 
10.0.0.255 being enabled for RIP. 
 

Enable a RIP routing process, which places you in router 
configuration mode. 

network {IP prefix} 

Associate a network with a RIP routing process. 

 

 
Because RIP is normally a broadcast protocol, in order for RIP routing updates to reach non-broadcast 
networks, it is necessary to establish a direct link between routers. Use the following command in router 
configuration mode. 
 

Command Purpose 
neighbor ip-address 

Define a neighboring router with which to exchange routing 
information. 

 
To control the set of interfaces with which you want to exchange routing updates, you can disable the 
sending of routing updates on specified interfaces by configuring the passive-interface command.