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

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Workstations A B<br />

IP 200.150.100.2 200.150.101.2<br />

SM 255.255.255.0 255.255.255.0<br />

GW 1 200.150.100.1 200.150.101.1<br />

GW 2 n/a n/a<br />

Workstations C D<br />

IP 202.150.100.3 203.150.100.3<br />

SM 255.255.255.0 255.255.255.0<br />

GW 1 202.150.100.1 203.150.100.1<br />

GW 2 202.150.100.2 203.150.100.2<br />

Background:<br />

In part 2 you learned that RIP uses “Hop Count” as its routing metric. IGRP uses<br />

bandwidth (BW) and delay (DLY), <strong>by</strong> default as its routing metrics. Unlike RIP, IGRP<br />

has other metrics that can be used for its routing process. Those other metrics include<br />

maximum transmission unit (MTU), reliability (RLY), and load. In this lab you will<br />

learn how to manipulate these metrics to suit your network needs. You will be<br />

“statically” configuring load balancing <strong>by</strong> changing the metrics to make one of two<br />

routes more desirable than the other. Finally you will learn how to set up “dynamic” load<br />

balancing so each route gets a nearly equal amount of the work.<br />

Step-By-Step Instructions:<br />

1. Set up and cable the lab as shown. Give yourself enough time to do this. Don’t rush<br />

through it otherwise your typos will cause headaches.<br />

2. Test ping from each workstation to each other. This should be just fine.<br />

3. Do a show ip route on each router. They should look like this:<br />

dennis#sh ip route<br />

Codes: C - connected, S - static, I - IGRP, R - RIP, M - mobile, B - BGP<br />

D - EIGRP, EX - EIGRP external, O - OSPF, IA - OSPF inter area<br />

N1 - OSPF NSSA external type 1, N2 - OSPF NSSA external type 2<br />

E1 - OSPF external type 1, E2 - OSPF external type 2, E - EGP<br />

i - IS-IS, L1 - IS-IS level-1, L2 - IS-IS level-2, * - candidate default<br />

U - per-user static route, o - ODR<br />

Gateway of last resort is not set<br />

I 202.150.100.0/24 [100/8576] via 201.150.100.2, 00:00:19, Serial0/0<br />

I 203.150.100.0/24 [100/8576] via 201.150.100.2, 00:00:19, Serial0/0<br />

I 201.150.101.0/24 [100/10576] via 201.150.100.2, 00:00:19, Serial0/0<br />

C 200.150.100.0/24 is directly connected, Ethernet0/0<br />

C 201.150.100.0/24 is directly connected, Serial0/0<br />

I 200.150.101.0/24 [100/10676] via 201.150.100.2, 00:00:19, Serial0/0<br />

dennis#<br />

293

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