5-1 default-metric cost
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5-1 default-metric costSyntax Description:
Purpose: Used to assign a cost to routes redistributed into OSPF that have not been assigned a metric by the redistribute command. Using the default-metric command will not affect routes that have been assigned a metric by the redistribute command. Initial Cisco IOS Software Release: 10.0 Configuration Example: Setting the Default Cost for Redistributed RoutesIn Figure 5-1, Router B is receiving the routes 3.3.3.0/24 and 10.1.1.4/30 from Router C via EIGRP. These EIGRP routes will be initially redistributed into OSPF using the default metric of 20. See Chapter 14, "Route Redistribution," for the use of the redistribute command. Figure 5-1. The Default Metric for redistributed BGP Routes Is 1 and the Default Metric for Other redistributed Router A interface Loopback0 ip address 1.1.1.1 255.255.255.255 ! interface Ethernet0/0 ip address 172.16.1.1 255.255.255.0 ! router ospf 1 network 1.1.1.1 0.0.0.0 area 0 network 172.16.1.0 0.0.0.255 area 0 _______________________________________________________________________ Router B interface Loopback0 ip address 2.2.2.2 255.255.255.255 ! interface Ethernet0 ip address 172.16.1.2 255.255.255.0 ! interface Serial1 bandwidth 64 ip address 10.1.1.5 255.255.255.252 clockrate 64000 ! router eigrp 1 network 10.0.0.0 router ospf 1 redistribute eigrp 1 subnets network 2.2.2.2 0.0.0.0 area 0 network 172.16.1.0 0.0.0.255 area 0 ______________________________________________________________________ Router C interface Loopback0 description Simulate the network 3.3.3.0/24 ip address 3.3.3.3 255.255.255.0 ! interface Serial0 bandwidth 64 ip address 10.1.1.6 255.255.255.252 ! router eigrp 1 network 3.0.0.0 network 10.0.0.0 no auto-summary Verify that Routers A and B have established an OSPF neighbor relationship, as shown here: rtrA# show ip ospf neighbor Neighbor ID Pri State Dead Time Address Interface 2.2.2.2 1 FULL/BDR 00:00:30 172.16.1.2 Ethernet0/0 _______________________________________________________________________ rtrB# show ip ospf neighbor Neighbor ID Pri State Dead Time Address Interface 1.1.1.1 1 FULL/DR 00:00:38 172.16.1.1 Ethernet0 Verify that Routers B and C have formed an EIGRP relationship. rtrB# show ip eigrp neighbors IP-EIGRP neighbors for process 1 H Address Interface Hold Uptime SRTT RTO Q Seq (sec) (ms) Cnt Num 0 10.1.1.6 Se1 10 00:13:27 399 2394 0 4 ______________________________________________________________________________________ rtrC# show ip eigrp neighbors IP-EIGRP neighbors for process 1 H Address Interface Hold Uptime SRTT RTO Q Seq (sec) (ms) Cnt Num 0 10.1.1.5 Se0 11 00:13:53 28 2280 0 6 Verify that Router B is receiving the 3.3.3.0/24 network from Router C. rtrB# show ip route Codes: C - connected, S - static, I - IGRP, R - RIP, M - mobile, B - BGP D - EIGRP , EX - EIGRP external, O - OSPF, IA - OSPF inter area N1 - OSPF NSSA external type 1, N2 - OSPF NSSA external type 2 E1 - OSPF external type 1, E2 - OSPF external type 2, E - EGP i - IS-IS, L1 - IS-IS level-1, L2 - IS-IS level-2, * - candidate default U - per-user static route, o - ODR Gateway of last resort is not set 1.0.0.0/32 is subnetted, 1 subnets O 1.1.1.1 [110/11] via 172.16.1.1, 00:13:37, Ethernet0 2.0.0.0/32 is subnetted, 1 subnets C 2.2.2.2 is directly connected, Loopback0 3.0.0.0/24 is subnetted, 1 subnets D 3.3.3.0 [90/40640000] via 10.1.1.6, 00:13:38, Serial1 172.16.0.0/24 is subnetted, 1 subnets C 172.16.1.0 is directly connected, Ethernet0 10.0.0.0/30 is subnetted, 1 subnets C 10.1.1.4 is directly connected, Serial1 Inspect the routing table on Router A to verify the default cost of the redistributed route. rtrA# show ip route Codes: C - connected, S - static, I - IGRP, R - RIP, M - mobile, B - BGP D - EIGRP, EX - EIGRP external, O - OSPF, IA - OSPF inter area N1 - OSPF NSSA external type 1, N2 - OSPF NSSA external type 2 E1 - OSPF external type 1, E2 - OSPF external type 2, E - EGP i - IS-IS, L1 - IS-IS level-1, L2 - IS-IS level-2, * - candidate default U - per-user static route, o - ODR Gateway of last resort is not set 1.0.0.0/32 is subnetted, 1 subnets C 1.1.1.1 is directly connected, Loopback0 2.0.0.0/32 is subnetted, 1 subnets O 2.2.2.2 [110/11] via 172.16.1.2, 00:27:10, Ethernet0/0 3.0.0.0/24 is subnetted, 1 subnets O E2 3.3.3.0 [110/20] via 172.16.1.2, 00:01:58, Ethernet0/0 172.16.0.0/24 is subnetted, 1 subnets C 172.16.1.0 is directly connected, Ethernet0/0 10.0.0.0/30 is subnetted, 1 subnets O E2 10.1.1.4 [110/20] via 172.16.1.2, 00:01:58, Ethernet0/0 The redistributed EIGRP routes have a cost or metric of 20. These routes were redistributed as type 2 routes (the default) so the cost of crossing the Ethernet network is not included. Modify the configuration on Router B so the redistributed EIGRP routes are assigned a cost of 55. Router B router ospf 1 redistribute eigrp 1 subnets network 2.2.2.2 0.0.0.0 area 0 network 172.16.1.0 0.0.0.255 area 0 default-metric 55 VerificationVerify that the redistributed EIGRP routes have been assigned a cost of 55. rtrA# show ip route Codes: C - connected, S - static, I - IGRP, R - RIP, M - mobile, B - BGP D - EIGRP, EX - EIGRP external, O - OSPF, IA - OSPF inter area N1 - OSPF NSSA external type 1, N2 - OSPF NSSA external type 2 E1 - OSPF external type 1, E2 - OSPF external type 2, E - EGP i - IS-IS, L1 - IS-IS level-1, L2 - IS-IS level-2, * - candidate default U - per-user static route, o - ODR Gateway of last resort is not set 1.0.0.0/32 is subnetted, 1 subnets C 1.1.1.1 is directly connected, Loopback0 2.0.0.0/32 is subnetted, 1 subnets O 2.2.2.2 [110/11] via 172.16.1.2, 00:00:06, Ethernet0/0 3.0.0.0/24 is subnetted, 1 subnets O E2 3.3.3.0 [110/55] via 172.16.1.2, 00:00:06, Ethernet0/0 172.16.0.0/24 is subnetted, 1 subnets C 172.16.1.0 is directly connected, Ethernet0/0 10.0.0.0/30 is subnetted, 1 subnets O E2 10.1.1.4 [110/55] via 172.16.1.2, 00:00:06, Ethernet0/0 Troubleshooting
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