Example 13-34. A router configuration attempting to filter the default route.
router eigrp 1network 10.0.0.0distribute-list 1 in Ethernet5/1!access-list 1 deny 0.0.0.0 255.255.255.255access-list 1 permit any
The intention is to deny the incoming default route at interface E5/1 and to permit all other routes incoming on that interface. However, no routes are being accepted on E5/1. What is wrong?
2
Grimwig in Figure 13-6 has the configuration in Example 13-35.
Example 13-35. Grimwig's configuration for troubleshooting Exercise 2.
What effect will this configuration have on the routes at Grimwig?
3
The routers in Figure 13-9 are running OSPF. Router B has the configuration in Example 13-36.
Figure 13-9. The network for Troubleshooting Exercises 3 and 4.
Example 13-36. Router B's OSPF configuration from Figure 13-9.
router ospf 50network 0.0.0.0 255.255.255.255 area 1distribute-list 1 in!access-list 1 deny 172.17.0.0access-list 1 permit any
The intention is to prevent Routers B and C from having a route entry for network 172.17.0.0. This plan seems to be working at Router B, but Router C still has an entry for 172.17.0.0. Why?
4
The routers in Figure 13-9 are running RIP. Router B has the configuration in Example 13-37.
Example 13-37. Router B's RIP configuration.
router ripnetwork 172.19.0.0network 172.20.0.0distribute-list 1 out Ethernet0distribute-list 2 out Ethernet1!access-list 1 permit 172.18.0.0access-list 2 permit 172.22.0.0
The intention is to advertise only network 172.22.0.0 to Router A and to advertise only network 172.18.0.0 to Router C. However, A and C have no RIP entries in their route table. What is wrong?