CCNA Cisco Certified Network Associate Study Guide - FTP Server

Hands-on Labs 289
global configuration command to remove it from each router. For
example,
config t
no router rip
3. From the configuration mode on Router A, type router igrp ?.
4. Notice that it asks for an autonomous system number. This is used to
allow only routers with the same AS number to communicate. Type 10
and press Enter. Your router can be configured to be part of as many
different ASs as necessary.
5. At the config-router prompt, type network 172.16.0.0. Notice that we
add the classful network boundary to advertise rather than the subnet
numbers.
6. Press Ctrl+Z to get out of configuration mode.
7. Go to Routers B and C and the 2621 router and type the commands
shown here:
RouterB(config)#router igrp 10
RouterB(config-router)#network 172.16.0.0
8. Verify that IGRP is running by typing the following command at each
router:
show ip protocol
Notice that this shows you your RIP and IGRP routing protocols and
the update timers.
sh ip route
This should let you see all eight subnets: 10, 11, 15, 20, 30, 40, 50, and
55. Some will be directly connected, and some will be I routes, which
are IGRP-injected routes. RIP is still running, but if you look at the
routing table, you’ll notice the network entry has a network number
(100/23456). The first number (100) is the trustworthiness rating.
Since RIP’s default trustworthiness rating is 120, the IGRP route is
used before a RIP route is used. The second number is the metric, or