Configuring Ip Routing; Configuring Rip; Table 10-1 Default Rip Configuration - Cisco ONS 15454 Software Feature And Configuration Manual

Chapter 10 Configuring Networking Protocols

Configuring IP Routing

You can now set up parameters for the selected routing protocols as described in these sections:
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Configuring RIP

The Routing Information Protocol (RIP) is an Interior Gateway Protocol (IGP) created for use in small,
homogeneous networks. It is a distance-vector routing protocol that uses broadcast User Datagram
Protocol (UDP) data packets to exchange routing information. The protocol is documented in RFC 1058.
You can find detailed information about RIP in IP Routing Fundamentals, published by Cisco Press.
Using RIP, the switch sends routing information updates (advertisements) every 30 seconds. If a router
does not receive an update from another router for 180 seconds or more, it marks the routes served by
that router as unusable. If there is still no update after 240 seconds, the router removes all routing table
entries for the non-updating router.
RIP uses hop counts 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 hop count of zero; a network with a hop count
of 16 is unreachable. This small range (0 to 15) makes RIP unsuitable for large networks.
If the router has a default network path, RIP advertises a route that links the router to the pseudo network
0.0.0.0. The 0.0.0.0 network does not exist; it is treated by RIP as a network to implement the default
routing feature. The switch advertises the default network if a default was learned by RIP or if the router
has a gateway of last resort and RIP is configured with a default metric. RIP sends updates to the
interfaces in specified networks. If an interface's network is not specified, it is not advertised in any
RIP update.
Table 10-1

Table 10-1 Default RIP Configuration

Feature
Auto summary
Default-information originate
Default metric
IP RIP authentication key-chain
IP RIP receive version
IP RIP send version
IP RIP triggered
IP split horizon
Cisco ONS 15454 SONET/SDH ML-Series Multilayer Ethernet Card Software Feature and Configuration Guide, R4.0
78-15224-02
Configuring RIP, page 10-5
Configuring OSPF, page 10-9
Configuring EIGRP, page 10-21
Configuring BGP, page 10-28
Configuring IS-IS, page 10-31
Configuring Static Routes, page 10-32
shows the default RIP configuration.
Default Setting
Enabled.
Disabled.
Built-in; automatic metric translations.
No authentication.
Authentication mode: clear text.
According to the version router configuration command.
According to the version router configuration command.
According to the version router configuration command.
Varies with media.
Configuring IP Routing
10-5