Learning by Doing: CISCO Certified Network ... - SCN Research

to add the extra metrics statements like with did with those. EIGRP and IGRP can be
redistributed without those extra metric statements. How easy is that? Unlike IGRP,
EIGRP supports Variable Length Subnet Masking (VLSM) so we do not have to be so
concerned about the classful boundaries like we had to with IGRP (and RIP too). Instead
of sending updates every x seconds like RIP and IGRP EIGRP sends out periodic
“hello…I am still here” packets and will only send the entire routing table when a change
is made. This helps to reduce the overhead traffic—another perk with EIGRP.
Step-By-Step Instructions:
1. Cable the lab as shown and configure the interfaces.
2. Enable EIGRP as a routing protocol and advertise/publish/associate your
networks. Like IGRP EIGRP requires an autonomous system number too:
war(config)#router eigrp 88
war(config-router)#network 138.74.16.0
war(config-router)#network 14.32.0.0
games(config)#router eigrp 88
games(config-router)#netwrork 14.32.0.0
games(config-router)#network220.34.98.0
3. Try to ping from A to B. It should work just fine.
4. Start Ethereal on workstation A. After about 30 packets disconnect the serial
line, wait a few seconds, and then plug it back in. Remember EIGRP will
only send the tables when a change occurs, otherwise it just sends “hello”
packets. We should now see both:
307