Configuration Exercises

1:

The routing configuration for router A in Figure 13.20 is:

 
 routerrip 
 redistributeigrp1metric3 
 passive-interfaceEthernet0 
 passive-interfaceEthernet1 
 network172.16.0.0 
 ! 
 routerigrp1 
 redistributeripmetric10000100025511500 
 passive-interfaceEthernet2 
 passive-interfaceEthernet3 
 network172.16.0.0 
 

Configure a route filter at A that will prevent subnet 172.16.12.0/24 from being known by any router other than E.

Figure 13.20. The internetwork for Configuration Exercises 1 through 4

2:

Configure a route filter at A in Figure 13.20 that will prevent D from learning about subnet 172.16.10.0/24.

3:

Configure a route filter at A in Figure 13.20 that will allow only subnets 172.16.2.0/24, 172.16.8.0/24, and 172.16.9.0/24 to be advertised into the RIP domain.

4:

Configure a route filter at A in Figure 13.20 that will prevent B from learning about any of the subnets in the RIP domain.

5:

Table 13.1 shows the interface addresses for all routers in Figure 13.21. Routers A and B are running EIGRP, and routers E and F are running IS-IS. C and D are redistributing. Configure distance commands for C and D that will prevent loops and route feedback but will still allow redundant paths.

Table 13.1. The interface addresses of the routers in Figure 13.21.

Router	Interface	Address	Mask
A	E0 S0 S1 S2	192.168.1.1 192.168.10.254 192.168.10.249 192.168.10.245	255.255.255.0 255.255.255.252 255.255.255.252 255.255.255.252
B	E0 S0 S1	192.168.2.1 192.168.10.246 192.168.10.241	255.255.255.0 255.255.255.252 255.255.255.252
C	S0 S1 S2	192.168.10.253 192.168.10.234 192.168.10.225	255.255.255.252 255.255.255.252 255.255.255.252
D	S0 S1 S2	192.168.10.250 192.168.10.242 192.168.10.237	255.255.255.252 255.255.255.252 255.255.255.252
E	E0 S0 S1	192.168.4.1 192.168.10.226 192.168.10.229	255.255.255.0 255.255.255.252 255.255.255.252
F	E0 S0 S1 S2	192.168.3.1 192.168.10.230 192.168.10.233 192.168.10.238	255.255.255.0 255.255.255.252 255.255.255.252 255.255.255.252

Figure 13.21. The internetwork for Configuration Exercises 5 through 7.

6:

Using the distance command, configure router D in Figure 13.21 to accept EIGRP routes only from router A. If the link to A fails, D should not accept routes from router B, although D should still advertise routes to B.

7:

Remove the configuration added to D in Configuration Exercise 6. Configure router C in Figure 13.21 to route to all destinations, including the networks and subnets of the IS-IS domain, via router A. C should route through E and F only if the link to A fails.