Understanding the network.pdf - Back to Home

flash updates (when changes occur between scheduled updates). To adjust IGRP
timers, use the router configuration subcommand . IGRP has a 90-second default update interval,
270-second invalid timer, and 630-second flush timer. Like RIP, if you adjust the
times on one router, you have to adjust them on all the routers.
Basic EIGRP (IGRP) Configuration
To get started, we will configure EIGRP on asbr-a2. The EIGRP process is started
with the global configuration EXEC command , and
IGRP is started with . The process ID must be a
number between 1–65,535. Multiple EIGRP and IGRP processes can operate on the
same router. This permits you to segregate routing policies inside the internetwork
and then use redistribution to announce between processes (a concept often used in
large corporate networks where network management responsibility is
decentralized). The process ID is used to identify the separate routing processes, so
the process ID must be the same for each router that participates in the same
EIGRP/IGRP process. Because EIGRP/IGRP is dependent on the process ID (PID)
being uniform across all the routers, the PID is often referred to as an AS number.
This does not mean you need an AS number to EIGRP/IGRP; any number will do, it
just needs to be consistent across all the routers that are meant to exchange routing
information:
asbr-a2(config)#router eigrp 99
After the process is enabled, IP network announcements are entered using the
router configuration subcommand.
Announcements are entered using the network number or IP address of the
interface:
asbr-a2(config-router)#network 192.168.191.20
asbr-a2(config-router)#network 192.168.12.0
asbr-a2(config-router)#network 192.168.192.0
asbr-a2(config-router)#network 192.168.10.0
asbr-a2(config-router)#network 192.168.181.0
asbr-a2(config-router)#network 192.168.0.4
asbr-a2(config-router)#no auto-summary