Section 2: IP IGP Protocols (30 Points)


Section 2.1 OSPF (10 Points)

  • Configure OSPF according to Figure 6-10. R1-s0/1, R2-s0/1, R4-s0/1, and R5-s0/1 are to be part of the OSPF area 0.

  • R2-s0/0 and R3-s0/0 are to be configured as OSPF area 1.

  • R1-e0/0 and Sw1-interface VLAN_11 are to be configured as OSPF area 11.

  • R1-e0/1 and R5 fa0/1 are to be configured as OSPF area 25.

If you configured this correctly as shown in Example 6-21 through Example 6-26, you have scored 4 points.

  • Configure the loopback addresses to be part of the OSPF process. These interfaces should appear in the OSPF routing table with their original /24 mask.

If you configured this correctly as shown in Example 6-22 through Example 6-27, you have scored 2 points.

  • Make sure you are able to ping any OSPF interface from any router.

If you configured this correctly as shown in Example 6-22 through Example 6-27, you have scored 2 points.

This is a basic OSPF configuration. The idea is to make you more familiar with the OSPF configuration especially adding routing on the Catalyst 3550.

Example 6-22. OSPF Configuration: R1 Output
 R1#show run interface Loopback0  ip address 160.10.1.1 255.255.255.0  ip ospf network point-to-point ! interface Ethernet0/0  ip address 160.10.11.1 255.255.255.0 ! interface Ethernet0/1  ip address 160.10.25.1 255.255.255.0 ! interface Serial0/1  ip address 160.10.37.1 255.255.255.0  encapsulation frame-relay  ip ospf network point-to-multipoint  ! router ospf 1  log-adjacency-changes  network 160.10.1.0 0.0.0.255 area 0  network 160.10.11.0 0.0.0.255 area 11  network 160.10.25.0 0.0.0.255 area 25  network 160.10.37.0 0.0.0.255 area 0 ! ! R1#show ip route ospf    160.10.0.0/16 is variably subnetted, 13 subnets, 3 masks O       160.10.37.5/32 [110/128] via 160.10.37.2, 01:24:17, Serial0/1 O IA    160.10.32.0/30 [110/128] via 160.10.37.2, 01:09:08, Serial0/1 O       160.10.38.0/24 [110/128] via 160.10.37.2, 01:24:17, Serial0/1 O       160.10.37.2/32 [110/64] via 160.10.37.2, 01:24:17, Serial0/1 O       160.10.7.0/24 [110/11] via 160.10.11.10, 01:09:08, Ethernet0/0 O       160.10.5.0/24 [110/129] via 160.10.37.2, 01:24:17, Serial0/1 O       160.10.4.0/24 [110/129] via 160.10.37.2, 01:24:17, Serial0/1 O IA    160.10.3.0/24 [110/129] via 160.10.37.2, 01:09:08, Serial0/1 O       160.10.2.0/24 [110/65] via 160.10.37.2, 01:24:17, Serial0/1 R1# 

Example 6-23. OSPF Configuration: R2 Output
 R2#show run interface Loopback0  ip address 160.10.2.2 255.255.255.0  ip ospf network point-to-point ! interface Serial0/0  ip address 160.10.32.2 255.255.255.252  encapsulation frame-relay  ip ospf network point-to-point  ! interface Serial0/1   no ip address  encapsulation frame-relay  no frame-relay inverse-arp  frame-relay lmi-type ansi ! interface Serial0/1.1 multipoint  ip address 160.10.37.2 255.255.255.0  ip ospf network point-to-multipoint ! interface Serial0/1.2 point-to-point  ip address 160.10.38.2 255.255.255.0  ip ospf network point-to-point ! router ospf 1  log-adjacency-changes network 160.10.2.0 0.0.0.255 area 0 network 160.10.32.0 0.0.0.3 area 1 network 160.10.37.0 0.0.0.255 area 0 network 160.10.38.0 0.0.0.255 area 0 ! R2#sh ip route ospf     160.10.0.0/16 is variably subnetted, 13 subnets, 3 masks O       160.10.37.5/32 [110/64] via 160.10.37.5, 00:01:13, Serial0/1.1 O       160.10.37.1/32 [110/64] via 160.10.37.1, 00:01:13, Serial0/1.1 O IA    160.10.11.0/24 [110/74] via 160.10.37.1, 00:01:13, Serial0/1.1 O IA    160.10.7.0/24 [110/75] via 160.10.37.1, 00:01:13, Serial0/1.1 O       160.10.5.0/24 [110/65] via 160.10.37.5, 00:01:13, Serial0/1.1 O       160.10.4.0/24 [110/65] via 160.10.38.4, 00:01:13, Serial0/1.2 O       160.10.3.0/24 [110/65] via 160.10.32.1, 01:38:58, Serial0/0 O       160.10.1.0/24 [110/65] via 160.10.37.1, 00:01:13, Serial0/1.1 O IA    160.10.25.0/24 [110/65] via 160.10.37.5, 00:01:13, Serial0/1.1  R2# 

Example 6-24. OSPF Configuration: R3 Output
 R3#show run interface Loopback0  ip address 160.10.3.3 255.255.255.0  ip ospf network point-to-point ! interface Serial0/0  ip address 160.10.32.1 255.255.255.252  encapsulation frame-relay  ip ospf network point-to-point  ! router ospf 1  log-adjacency-changes  network 160.10.3.0 0.0.0.255 area 1   network 160.10.32.0 0.0.0.3 area 1 ! R3#show ip route ospf      160.10.0.0/16 is variably subnetted, 15 subnets, 3 masks O IA    160.10.37.5/32 [110/128] via 160.10.32.2, 00:01:00, Serial0/0 O IA    160.10.38.0/24 [110/128] via 160.10.32.2, 00:01:00, Serial0/0 O IA    160.10.37.2/32 [110/64] via 160.10.32.2, 00:01:00, Serial0/0 O IA    160.10.37.1/32 [110/128] via 160.10.32.2, 00:01:00, Serial0/0 O IA    160.10.11.0/24 [110/138] via 160.10.32.2, 00:01:00, Serial0/0 O IA    160.10.2.0/24 [110/65] via 160.10.32.2, 00:01:00, Serial0/0 O IA    160.10.7.0/24 [110/139] via 160.10.32.2, 00:01:00, Serial0/0 O IA    160.10.5.0/24 [110/129] via 160.10.32.2, 00:01:00, Serial0/0 O IA    160.10.4.0/24 [110/129] via 160.10.32.2, 00:01:00, Serial0/0 O IA    160.10.1.0/24 [110/129] via 160.10.32.2, 00:01:00, Serial0/0 O IA    160.10.25.0/24 [110/129] via 160.10.32.2, 00:01:00, Serial0/0 R3# 

Example 6-25. OSPF Configuration: R4 Output
 R4#show run interface Loopback0  ip address 160.10.4.4 255.255.255.0  ip ospf network point-to-point ! interface Serial0/1  ip address 160.10.38.4 255.255.255.0  encapsulation frame-relay  ip ospf network point-to-point  ! router ospf 1  log-adjacency-changes  network 160.10.4.0 0.0.0.255 area 0  network 160.10.38.0 0.0.0.255 area 0 ! ! R4#show ip route ospf      160.10.0.0/16 is variably subnetted, 13 subnets, 3 masks O       160.10.37.5/32 [110/128] via 160.10.38.2, 00:02:34, Serial0/1 O IA    160.10.32.0/30 [110/128] via 160.10.38.2, 00:02:34, Serial0/1 O       160.10.37.2/32 [110/64] via 160.10.38.2, 00:02:34, Serial0/1 O       160.10.37.1/32 [110/128] via 160.10.38.2, 00:02:34, Serial0/1 O IA    160.10.11.0/24 [110/138] via 160.10.38.2, 00:02:34, Serial0/1 O       160.10.2.0/24 [110/65] via 160.10.38.2, 00:02:34, Serial0/1 O IA    160.10.3.0/24 [110/129] via 160.10.38.2, 00:02:34, Serial0/1 O IA    160.10.7.0/24 [110/139] via 160.10.38.2, 00:02:34, Serial0/1 O       160.10.5.0/24 [110/129] via 160.10.38.2, 00:02:34, Serial0/1 O       160.10.1.0/24 [110/129] via 160.10.38.2, 00:02:34, Serial0/1 O IA    160.10.25.0/24 [110/129] via 160.10.38.2, 00:02:34, Serial0/1 R4# 

Example 6-26. OSPF Configuration: R5 Output
 R5#show run interface Loopback0  ip address 160.10.5.5 255.255.255.0  ip ospf network point-to-point ! interface FastEthernet0/1  ip address 160.10.25.5 255.255.255.0  duplex auto  speed auto ! interface Serial0/1  ip address 160.10.37.5 255.255.255.0  encapsulation frame-relay  ip ospf network point-to-multipoint  ! router ospf 1  log-adjacency-changes  network 160.10.5.0 0.0.0.255 area 0  network 160.10.25.0 0.0.0.255 area 25  network 160.10.37.0 0.0.0.255 area 0 ! ! R5#show ip route ospf      160.10.0.0/16 is variably subnetted, 14 subnets, 3 masks O IA    160.10.32.0/30 [110/128] via 160.10.37.2, 00:02:52, Serial0/1 O       160.10.38.0/24 [110/128] via 160.10.37.2, 00:02:52, Serial0/1 O       160.10.37.2/32 [110/64] via 160.10.37.2, 00:02:52, Serial0/1 O       160.10.37.1/32 [110/128] via 160.10.37.2, 00:02:52, Serial0/1 O IA    160.10.11.0/24 [110/138] via 160.10.37.2, 00:02:52, Serial0/1 O       160.10.2.0/24 [110/65] via 160.10.37.2, 00:02:52, Serial0/1 O IA    160.10.3.0/24 [110/129] via 160.10.37.2, 00:02:52, Serial0/1 O IA    160.10.7.0/24 [110/139] via 160.10.37.2, 00:02:52, Serial0/1 O       160.10.1.0/24 [110/129] via 160.10.37.2, 00:02:52, Serial0/1 O       160.10.4.0/24 [110/129] via 160.10.37.2, 00:02:52, Serial0/1 R5# 

Example 6-27. OSPF Configuration: Sw1 Output
 Sw1#sh run ! ! ip subnet-zero ip routing ! no ip domain-lookup ! ! interface Loopback0  ip address 160.10.7.7 255.255.255.0  ip ospf network point-to-point ! ! interface Vlan11  ip address 160.10.11.10 255.255.255.0 ! router ospf 1  log-adjacency-changes  network 160.10.7.0 0.0.0.255 area 11  network 160.10.11.0 0.0.0.255 area 11 ! ! Sw1#sh ip ro ospf      160.10.0.0/16 is variably subnetted, 13 subnets, 3 masks O IA    160.10.37.5/32 [110/129] via 160.10.11.1, 00:00:00, Vlan11 O IA    160.10.32.0/30 [110/129] via 160.10.11.1, 00:00:00, Vlan11 O IA    160.10.38.0/24 [110/129] via 160.10.11.1, 00:00:00, Vlan11 O IA    160.10.37.2/32 [110/65] via 160.10.11.1, 00:00:00, Vlan11 O IA    160.10.37.1/32 [110/1] via 160.10.11.1, 00:00:00, Vlan11 O IA    160.10.2.0/24 [110/66] via 160.10.11.1, 00:00:00, Vlan11 O IA    160.10.3.0/24 [110/130] via 160.10.11.1, 00:00:00, Vlan11 O IA    160.10.1.0/24 [110/2] via 160.10.11.1, 00:00:00, Vlan11 O IA    160.10.4.0/24 [110/130] via 160.10.11.1, 00:00:00, Vlan11 O IA    160.10.5.0/24 [110/130] via 160.10.11.1, 00:00:00, Vlan11 O IA    160.10.25.0/24 [110/11] via 160.10.11.1, 00:00:00, Vlan11 Sw1# 

  • Configure R1 such that the interface on VLAN_25 will have a cost of 20.

To change the cost on the interface, you need to work with the command ip ospf cost command under the interface level.

If you configured this correctly as shown in Example 6-28, you have scored 2 points.

Example 6-28. OSPF Configuration to Block LSA Flooding
 R1#sh run int e0/1 Building configuration... Current configuration : 136 bytes ! interface Ethernet0/1  ip address 160.10.25.1 255.255.255.0  ip ospf cost 20  half-duplex end R1# ! Below the output showing the interface cost before change. Notice the cost = 10 (default) R1#show ip ospf interface e0/1 Ethernet0/1 is up, line protocol is up   Internet Address 160.10.25.1/24, Area 25   Process ID 1, Router ID 160.10.1.1, Network Type BROADCAST, Cost: 10   Transmit Delay is 1 sec, State BDR, Priority 1 ! <> ! R1# ! Below the output showing the interface cost after change. Notice the cost = 20. R1#show ip ospf interface e0/1 Ethernet0/1 is up, line protocol is up   Internet Address 160.10.25.1/24, Area 25   Process ID 1, Router ID 160.10.1.1, Network Type BROADCAST, Cost: 20   Transmit Delay is 1 sec, State BDR, Priority 1 ! <> ! R1# 

Section 2.2: EIGRP (8 Points)

  • Configure EIGRP between R2 and BB1. Configure EIGRP as AS 400. R2-fa0/0 must be the only interface configured for EIGRP on R2. The R2 routing table should be populated with EIGRP routes from BB1.

If you configured this correctly as shown in Example 6-29, you have scored 2 points.

  • Redistribute mutually between EIGRP and OSPF. Make sure all routers have the EIGRP routes in their routing tables.

If you configured this correctly as shown in Example 6-29, you have scored 2 points.

This is a basic setup to have R2 receiving EIGRP routes from BB1. An important thing is to observe and follow the EIGRP AS number given on the IP IGP diagram. Pay attention when configuring redistribution to explore the redistribute command to ensure that no networks will be missing.

NOTE

To have R2 to advertise the OSPF networks to BB1, we need to configure under the EIGRP process the network 160.10.0.0.


Example 6-29. R2, R5, and Sw1 Output: EIGRP Configuration and Verification
 R2#sh run | b router eigrp router eigrp 400  redistribute ospf 1 metric 100 10 255 255 1500  network 130.200.10.0 0.0.0.255  network 160.10.0.0  no auto-summary  no eigrp log-neighbor-changes ! ! router ospf 1  redistribute eigrp 400 metric 100 subnets ! R2# show ip route eigrp      50.0.0.0/24 is subnetted, 1 subnets D       50.5.5.0 [90/156160] via 130.200.10.200, 00:01:54, FastEthernet0/0 D    193.118.9.0/24 [90/156160] via 130.200.10.200, 00:01:54, FastEthernet0/0 D    193.118.8.0/24 [90/156160] via 130.200.10.200, 00:01:54, FastEthernet0/0 D    193.118.10.0/24 [90/156160] via 130.200.10.200, 00:01:54, FastEthernet0/0 D    193.118.5.0/24 [90/156160] via 130.200.10.200, 00:01:54, FastEthernet0/0 D    193.118.4.0/24 [90/156160] via 130.200.10.200, 00:01:54, FastEthernet0/0 D    193.118.7.0/24 [90/156160] via 130.200.10.200, 00:01:54, FastEthernet0/0      40.0.0.0/24 is subnetted, 1 subnets D       40.4.4.0 [90/156160] via 130.200.10.200, 00:01:54, FastEthernet0/0 D    193.118.6.0/24 [90/156160] via 130.200.10.200, 00:01:54, FastEthernet0/0 D    193.118.1.0/24 [90/156160] via 130.200.10.200, 00:01:54, FastEthernet0/0 D    193.118.3.0/24 [90/156160] via 130.200.10.200, 00:01:54, FastEthernet0/0 D    193.118.2.0/24 [90/156160] via 130.200.10.200, 00:01:54, FastEthernet0/0 R2# ! ! R5 Routing table has the EIGRP routes as external OSPF routes ________________________________________________________________ R5# sh ip ro ospf      50.0.0.0/24 is subnetted, 1 subnets O E2    50.5.5.0 [110/100] via 160.10.37.2, 00:01:02, Serial0/1 O E2 193.118.9.0/24 [110/100] via 160.10.37.2, 00:01:02, Serial0/1 O E2 193.118.8.0/24 [110/100] via 160.10.37.2, 00:01:02, Serial0/1 O E2 193.118.10.0/24 [110/100] via 160.10.37.2, 00:01:02, Serial0/1 O E2 193.118.5.0/24 [110/100] via 160.10.37.2, 00:01:02, Serial0/1 O E2 193.118.4.0/24 [110/100] via 160.10.37.2, 00:01:02, Serial0/1      160.10.0.0/16 is variably subnetted, 14 subnets, 3 masks O IA    160.10.32.0/30 [110/128] via 160.10.37.2, 00:01:12, Serial0/1 O       160.10.38.0/24 [110/128] via 160.10.37.2, 00:01:12, Serial0/1 O       160.10.37.2/32 [110/64] via 160.10.37.2, 00:01:12, Serial0/1 O       160.10.37.1/32 [110/128] via 160.10.37.2, 00:01:12, Serial0/1 O IA    160.10.11.0/24 [110/138] via 160.10.37.2, 00:01:12, Serial0/1 O       160.10.2.0/24 [110/65] via 160.10.37.2, 00:01:12, Serial0/1 O IA    160.10.3.0/24 [110/129] via 160.10.37.2, 00:01:12, Serial0/1 O       160.10.1.0/24 [110/129] via 160.10.37.2, 00:01:13, Serial0/1 O IA    160.10.7.0/24 [110/139] via 160.10.37.2, 00:01:13, Serial0/1 O       160.10.4.0/24 [110/129] via 160.10.37.2, 00:01:13, Serial0/1 O E2 193.118.7.0/24 [110/100] via 160.10.37.2, 00:01:03, Serial0/1      40.0.0.0/24 is subnetted, 1 subnets O E2    40.4.4.0 [110/100] via 160.10.37.2, 00:01:03, Serial0/1      130.200.0.0/24 is subnetted, 1 subnets O E2    130.200.10.0 [110/100] via 160.10.37.2, 00:01:03, Serial0/1 O E2 193.118.6.0/24 [110/100] via 160.10.37.2, 00:01:04, Serial0/1 O E2 193.118.1.0/24 [110/100] via 160.10.37.2, 00:01:04, Serial0/1 O E2 193.118.3.0/24 [110/100] via 160.10.37.2, 00:01:04, Serial0/1 O E2 193.118.2.0/24 [110/100] via 160.10.37.2, 00:01:04, Serial0/1 R5# ! Sw1 Routing table has the EIGRP routes as OSPF external ________________________________________________________________ Sw1#sh ip ro ospf      50.0.0.0/24 is subnetted, 1 subnets O E2    50.5.5.0 [110/100] via 160.10.11.1, 00:03:17, Vlan11 O E2 193.118.9.0/24 [110/100] via 160.10.11.1, 00:03:17, Vlan11 O E2 193.118.8.0/24 [110/100] via 160.10.11.1, 00:03:17, Vlan11 O E2 193.118.10.0/24 [110/100] via 160.10.11.1, 00:03:17, Vlan11 O E2 193.118.5.0/24 [110/100] via 160.10.11.1, 00:03:17, Vlan11 O E2 193.118.4.0/24 [110/100] via 160.10.11.1, 00:03:17, Vlan11      160.10.0.0/16 is variably subnetted, 13 subnets, 3 masks O IA    160.10.37.5/32 [110/129] via 160.10.11.1, 00:14:52, Vlan11 O IA    160.10.32.0/30 [110/129] via 160.10.11.1, 00:14:52, Vlan11 O IA    160.10.38.0/24 [110/129] via 160.10.11.1, 00:14:52, Vlan11 O IA    160.10.37.2/32 [110/65] via 160.10.11.1, 00:14:52, Vlan11 O IA    160.10.37.1/32 [110/1] via 160.10.11.1, 00:14:52, Vlan11 O IA    160.10.2.0/24 [110/66] via 160.10.11.1, 00:14:52, Vlan11 O IA    160.10.3.0/24 [110/130] via 160.10.11.1, 00:14:52, Vlan11 O IA    160.10.1.0/24 [110/2] via 160.10.11.1, 00:14:52, Vlan11 O IA    160.10.4.0/24 [110/130] via 160.10.11.1, 00:14:52, Vlan11 O IA    160.10.5.0/24 [110/130] via 160.10.11.1, 00:14:52, Vlan11 O IA    160.10.25.0/24 [110/11] via 160.10.11.1, 00:14:52, Vlan11 O E2 193.118.7.0/24 [110/100] via 160.10.11.1, 00:03:18, Vlan11      40.0.0.0/24 is subnetted, 1 subnets O E2    40.4.4.0 [110/100] via 160.10.11.1, 00:03:18, Vlan11      130.200.0.0/24 is subnetted, 1 subnets O E2    130.200.10.0 [110/100] via 160.10.11.1, 00:03:20, Vlan11 O E2 193.118.6.0/24 [110/100] via 160.10.11.1, 00:03:20, Vlan11 O E2 193.118.1.0/24 [110/100] via 160.10.11.1, 00:03:20, Vlan11 O E2 193.118.3.0/24 [110/100] via 160.10.11.1, 00:03:20, Vlan11 O E2 193.118.2.0/24 [110/100] via 160.10.11.1, 00:03:20, Vlan11 Sw1# ! BB_ROUTER Routing table has the OSPF routes ________________________________________________________________ BB_ROUTER# sh ip ro eigrp      160.10.0.0/16 is variably subnetted, 13 subnets, 3 masks D       160.10.32.0/30 [90/2195456] via 130.200.10.2, 00:03:50, Ethernet2/0 D EX    160.10.37.5/32 [170/25628160] via 130.200.10.2, 00:03:50, Ethernet2/0 D       160.10.38.0/24 [90/2195456] via 130.200.10.2, 00:03:50, Ethernet2/0 D EX    160.10.37.1/32 [170/25628160] via 130.200.10.2, 00:03:50, Ethernet2/0 D       160.10.37.0/24 [90/2195456] via 130.200.10.2, 00:03:50, Ethernet2/0 D EX    160.10.11.0/24 [170/25628160] via 130.200.10.2, 00:03:50, Ethernet2/0 D       160.10.2.0/24 [90/409600] via 130.200.10.2, 00:03:50, Ethernet2/0 D EX    160.10.3.0/24 [170/25628160] via 130.200.10.2, 00:03:50, Ethernet2/0 D EX    160.10.1.0/24 [170/25628160] via 130.200.10.2, 00:03:50, Ethernet2/0 D EX    160.10.7.0/24 [170/25628160] via 130.200.10.2, 00:03:50, Ethernet2/0 D EX    160.10.4.0/24 [170/25628160] via 130.200.10.2, 00:03:50, Ethernet2/0 D EX    160.10.5.0/24 [170/25628160] via 130.200.10.2, 00:03:50, Ethernet2/0 D EX    160.10.25.0/24 [170/25628160] via 130.200.10.2, 00:03:51, Ethernet2/0 BB_ROUTER# 

  • Configure R2 to allow only the networks 50.5.5.0/24 and 40.4.4.0/24 from BB1.

If you configured this correctly as shown in Example 6-30, you have scored 2 points.

An access list permiting only those two networks and applying under the EIGRP process with a distribute list accomplishes the requirement. It is important to notice that at this point you might need to clear all the routing tables within all routers to have a fast convergence to see only the two networks, considering you have already updated the routing tables with all EIGRP backbone routes.

Example 6-30. EIGRP Filter Configuration on R2 and Verification on R5
 R2#sh run | b router eigrp router eigrp 400  distribute-list 2 in FastEthernet0/0  no auto-summary  no eigrp log-neighbor-changes ! access-list 2 permit 50.5.5.0 0.0.0.255 access-list 2 permit 40.4.4.0 0.0.0.255 ! ! R2 EIGRP Routing table has only the 2 EIGRP networks R2#sh ip ro eigrp 50.0.0.0/24 is subnetted, 1 subnets D       50.5.5.0 [90/156160] via 130.200.10.200, 00:09:21, FastEthernet0/0      40.0.0.0/24 is subnetted, 1 subnets D       40.4.4.0 [90/156160] via 130.200.10.200, 00:09:21, FastEthernet0/0R2# ! ! R5 OSPF Routing table has only the 2 networks R5#sh ip ro ospf  50.0.0.0/24 is subnetted, 1 subnets O E2    50.5.5.0 [110/100] via 160.10.37.2, 00:00:03, Serial0/1      160.10.0.0/16 is variably subnetted, 14 subnets, 3 masks O IA    160.10.32.0/30 [110/128] via 160.10.37.2, 00:07:59, Serial0/1 O       160.10.38.0/24 [110/128] via 160.10.37.2, 00:07:59, Serial0/1 O       160.10.37.2/32 [110/64] via 160.10.37.2, 00:07:59, Serial0/1 O       160.10.37.1/32 [110/128] via 160.10.37.2, 00:07:59, Serial0/1 O IA    160.10.11.0/24 [110/138] via 160.10.37.2, 00:07:59, Serial0/1 O       160.10.2.0/24 [110/65] via 160.10.37.2, 00:07:59, Serial0/1 O IA    160.10.3.0/24 [110/129] via 160.10.37.2, 00:07:59, Serial0/1 O       160.10.1.0/24 [110/129] via 160.10.37.2, 00:07:59, Serial0/1 O IA    160.10.7.0/24 [110/139] via 160.10.37.2, 00:07:59, Serial0/1 O       160.10.4.0/24 [110/129] via 160.10.37.2, 00:07:59, Serial0/1      130.200.0.0/24 is subnetted, 1 subnets O E2    130.200.10.0 [110/100] via 160.10.37.2, 00:07:49, Serial0/1      40.0.0.0/24 is subnetted, 1 subnets O E2    40.4.4.0 [110/100] via 160.10.37.2, 00:00:07, Serial0/1R5# ! ! 

  • You want to guarantee a minimum of 70 percent of the bandwidth for the EIGRP traffic. Configure R2 to accommodate this.

To adjust the bandwidth for EIGRP on R2 from the default of 50 percent you need to use the ip bandwidth-percent eigrp command.

If you configured this correctly as shown in Example 6-31, you have scored 2 points.

Example 6-31. EIGRP Bandwidth Command Configuration
 R2#sh run int fa0/0 Building configuration... Current configuration : 132 bytes ! interface FastEthernet0/0  ip address 130.200.10.2 255.255.255.0  ip bandwidth-percent eigrp 400 70 R2# 

Section 2.3: RIP (7 Points)

  • Configure RIPv2 between R4 and BB2. R4-e0/0 must be the only interface configured for RIP on R4. You should receive updates and the R4 routing table will be populated with some RIP routes from BB2.

If you configured this correctly as shown in Example 6-32, you have scored 2 points.

  • Redistribute RIP into OSPF such that networks 20.0.0.0/8 and 30.0.0.0/8 will have a metric of 128 kbps and network 196.1.0.0/16 will have metric of 56 kbps.

If you configured this correctly as shown in Example 6-32, you have scored 2 points.

RIPv2 is running on BB2 and advertising routes to R4. A combination of filter, route map, and redistribution into OSPF is used to accomplish this task.

Example 6-32. R4 and R1 Output: RIP Configuration and Verification

[View full width]

 R4#sh run | b router rip router rip  version 2  network 140.200.0.0 no auto-summary ! ! R4#sh run | b router router ospf 1  log-adjacency-changes redistribute rip subnets route-map RIP_METRIC! access-list 1 permit 196.1.0.0 0.0.255.255 access-list 2 permit 30.0.0.0 0.255.255.255 access-list 2 permit 20.0.0.0 0.255.255.255 route-map RIP_METRIC permit 10  match ip address 1  set metric 56 ! route-map RIP_METRIC permit 20  match ip address 2  set metric 128 ! ! R1 OSPF Routing table before filter and route-map. Observe the RIP routes metrics values R1#show ip route ospf O E2 196.1.8.0/24 [110/20] via 160.10.37.2, 00:00:56, Serial0/1 O E2 196.1.9.0/24 [110/20] via 160.10.37.2, 00:00:56, Serial0/1 O E2 196.1.10.0/24 [110/20] via 160.10.37.2, 00:00:56, Serial0/1 O E2 20.0.0.0/8 [110/20] via 160.10.37.2, 00:00:56, Serial0/1 O E2 196.1.1.0/24 [110/20] via 160.10.37.2, 00:00:56, Serial0/1      160.10.0.0/16 is variably subnetted, 17 subnets, 3 masks O IA    160.10.32.0/30 [110/128] via 160.10.37.2, 00:44:16, Serial0/1 O       160.10.37.5/32 [110/128] via 160.10.37.2, 00:44:16, Serial0/1 O E2    160.10.33.0/24 [110/100] via 160.10.25.5, 00:43:45, Ethernet0/1 O       160.10.38.0/24 [110/128] via 160.10.37.2, 00:44:16, Serial0/1 O       160.10.37.2/32 [110/64] via 160.10.37.2, 00:44:16, Serial0/1 O E2    160.10.15.0/24 [110/100] via 160.10.25.5, 00:44:16, Ethernet0/1 O       160.10.2.0/24 [110/65] via 160.10.37.2, 00:44:16, Serial0/1 O IA    160.10.3.0/24 [110/129] via 160.10.37.2, 00:44:17, Serial0/1 O E2    160.10.6.0/24 [110/100] via 160.10.25.5, 00:44:17, Ethernet0/1 O       160.10.7.0/24 [110/11] via 160.10.11.10, 00:44:17, Ethernet0/0 O       160.10.4.0/24 [110/129] via 160.10.37.2, 00:44:17, Serial0/1 O       160.10.5.0/24 [110/129] via 160.10.37.2, 00:44:17, Serial0/1 O E2    160.10.22.0/24 [110/100] via 160.10.25.5, 00:44:17, Ethernet0/1 O E2 196.1.2.0/24 [110/20] via 160.10.37.2, 00:00:57, Serial0/1      130.200.0.0/24 is subnetted, 1 subnets O E2    130.200.10.0 [110/100] via 160.10.37.2, 00:44:18, Serial0/1 O E2 196.1.3.0/24 [110/20] via 160.10.37.2, 00:00:58, Serial0/1 O E2 196.1.4.0/24 [110/20] via 160.10.37.2, 00:00:58, Serial0/1 O E2 196.1.5.0/24 [110/20] via 160.10.37.2, 00:00:58, Serial0/1 O E2 196.1.6.0/24 [110/20] via 160.10.37.2, 00:00:58, Serial0/1 O E2 196.1.7.0/24 [110/20] via 160.10.37.2, 00:00:58, Serial0/1 O E2 30.0.0.0/8 [110/20] via 160.10.37.2, 00:00:58, Serial0/1 R1#! ! R1 OSPF Routing table after filter and route-map being configured. Observe that RIP  routes metrics have changed R1#show ip route ospf O E2 196.1.8.0/24 [110/56] via 160.10.37.2, 00:00:16, Serial0/1 O E2 196.1.9.0/24 [110/56] via 160.10.37.2, 00:00:16, Serial0/1 O E2 196.1.10.0/24 [110/56] via 160.10.37.2, 00:00:16, Serial0/1 O E2 20.0.0.0/8 [110/128] via 160.10.37.2, 00:00:16, Serial0/1 O E2 196.1.1.0/24 [110/56] via 160.10.37.2, 00:00:16, Serial0/1      160.10.0.0/16 is variably subnetted, 17 subnets, 3 masks O IA    160.10.32.0/30 [110/128] via 160.10.37.2, 00:48:10, Serial0/1 O       160.10.37.5/32 [110/128] via 160.10.37.2, 00:48:10, Serial0/1 O E2    160.10.33.0/24 [110/100] via 160.10.25.5, 00:47:40, Ethernet0/1 O       160.10.38.0/24 [110/128] via 160.10.37.2, 00:48:10, Serial0/1 O       160.10.37.2/32 [110/64] via 160.10.37.2, 00:48:10, Serial0/1 O E2    160.10.15.0/24 [110/100] via 160.10.25.5, 00:48:10, Ethernet0/1 O       160.10.2.0/24 [110/65] via 160.10.37.2, 00:48:10, Serial0/1 O IA    160.10.3.0/24 [110/129] via 160.10.37.2, 00:48:11, Serial0/1 O E2    160.10.6.0/24 [110/100] via 160.10.25.5, 00:48:11, Ethernet0/1 O       160.10.7.0/24 [110/11] via 160.10.11.10, 00:48:11, Ethernet0/0 O       160.10.4.0/24 [110/129] via 160.10.37.2, 00:48:11, Serial0/1 O       160.10.5.0/24 [110/129] via 160.10.37.2, 00:48:11, Serial0/1 O E2    160.10.22.0/24 [110/100] via 160.10.25.5, 00:48:11, Ethernet0/1 O E2 196.1.2.0/24 [110/56] via 160.10.37.2, 00:00:17, Serial0/1           130.200.0.0/24 is subnetted, 1 subnets O E2    130.200.10.0 [110/100] via 160.10.37.2, 00:48:12, Serial0/1 O E2 196.1.3.0/24 [110/56] via 160.10.37.2, 00:00:18, Serial0/1 O E2 196.1.4.0/24 [110/56] via 160.10.37.2, 00:00:18, Serial0/1 O E2 196.1.5.0/24 [110/56] via 160.10.37.2, 00:00:18, Serial0/1 O E2 196.1.6.0/24 [110/56] via 160.10.37.2, 00:00:18, Serial0/1 O E2 196.1.7.0/24 [110/56] via 160.10.37.2, 00:00:18, Serial0/1 O E2 30.0.0.0/8 [110/128] via 160.10.37.2, 00:00:18, Serial0/1 R1# 

  • Configure R4 to adjust RIP timers so the time that a route is declared invalid will be set to 200 seconds.

To adjust the invalid timer, you need to use the timers basic update invalid holdown flush command and configure 200 seconds to the invalid portion of the command. You can leave the other values as the default values.

If you configured this correctly as shown in Example 6-33, you have scored 3 points.

Example 6-33. R4 Output: RIP Timer Configuration
 R4#sh run | b router rip router rip  version 2  timers basic 30 200 180 240  network 140.200.0.0 ! 

Section 2.4: IS-IS (5 Points)

  • Configure IS-IS according to Figure 6-10. R3-fa0/0, R3-fa0/1, R5-fa0/0, R6-e0/0, and the ISDN cloud are part of the IS-IS domain. Use area 49.0004 and level 1 and 2 adjacencies.

  • You should have the routing table of all IS-IS routers populated with the IS-IS networks.

  • You should be able to ping all interfaces of all routers within the IS-IS network.

Notice that to establish level 1 and 2 adjacencies you do not need to configure the isis circuit-type interface command or is-type router process command because this is the default.

If you configured this correctly as shown in Example 6-34, you have scored 2 points.

  • Redistribute IS-IS into OSPF on R5. R6 should see in its routing table all routes from your topology and R6 must be able to ping all other router loopback0 address.

If you configured this correctly as shown in Example 6-34, you have scored 2 points.

This is a basic IS-IS configuration into a single area. It is a good idea to configure your R6-loopback address under IS-IS because R6 is running only IS-IS and you might need to have R6-lo0 be reachable later in the lab.

Example 6-34. IS-IS Configuration and Output from R3, R5, and R6
 R3#sh run ! clns routing ! interface FastEthernet0/0  ip address 160.10.22.3 255.255.255.0  ip router isis ! ! interface BRI0/0  ip address 160.10.15.3 255.255.255.0  ip router isis  encapsulation ppp ! interface FastEthernet0/1  ip address 160.10.33.3 255.255.255.0  ip router isis ! ! router isis  net 49.0004.0000.0000.0003.00 ! ________________________________________________________________ R5#sh run ! clns routing ! ! interface FastEthernet0/0  ip address 160.10.22.5 255.255.255.0  ip router isis ! ! interface BRI0/0  ip address 160.10.15.5 255.255.255.0  ip router isis  encapsulation ppp ! ! ! router ospf 1  log-adjacency-changes  redistribute connected metric 100 subnets  redistribute isis level-1-2 metric 100 subnets ! router isis  net 49.0004.0000.0000.0005.00  redistribute ospf 1 metric 10 level-1-2 R5# ! ________________________________________________________________ R6#sh run ! ! ! interface Loopback0  ip address 160.10.6.6 255.255.255.0  ip router isis ! interface Ethernet0/0  ip address 160.10.22.6 255.255.255.0  ip router isis ! router isis  net 49.0004.0000.0000.0006.00 ! R6# ! R6#sh ip ro i L1 196.1.8.0/24 [115/20] via 160.10.22.5, Ethernet0/0      170.100.0.0/24 is subnetted, 1 subnets C       170.100.10.0 is directly connected, ATM3/0      50.0.0.0/24 is subnetted, 1 subnets i L1    50.5.5.0 [115/20] via 160.10.22.5, Ethernet0/0 i L1 196.1.9.0/24 [115/20] via 160.10.22.5, Ethernet0/0 i L1 196.1.10.0/24 [115/20] via 160.10.22.5, Ethernet0/0 i L1 20.0.0.0/8 [115/20] via 160.10.22.5, Ethernet0/0 i L1 196.1.1.0/24 [115/20] via 160.10.22.5, Ethernet0/0      160.10.0.0/16 is variably subnetted, 17 subnets, 3 masks i L1    160.10.32.0/30 [115/20] via 160.10.22.5, Ethernet0/0 i L1    160.10.33.0/24 [115/20] via 160.10.22.3, Ethernet0/0 i L1    160.10.38.0/24 [115/20] via 160.10.22.5, Ethernet0/0 i L1    160.10.37.2/32 [115/20] via 160.10.22.5, Ethernet0/0 i L1    160.10.37.1/32 [115/20] via 160.10.22.5, Ethernet0/0 i L1    160.10.37.0/24 [115/20] via 160.10.22.5, Ethernet0/0 i L1    160.10.11.0/24 [115/20] via 160.10.22.5, Ethernet0/0 i L1    160.10.15.0/24 [115/20] via 160.10.22.5, Ethernet0/0                        [115/20] via 160.10.22.3, Ethernet0/0 i L1    160.10.2.0/24 [115/20] via 160.10.22.5, Ethernet0/0 i L1    160.10.3.0/24 [115/20] via 160.10.22.5, Ethernet0/0                       [115/20] via 160.10.22.3, Ethernet0/0 i L1    160.10.1.0/24 [115/20] via 160.10.22.5, Ethernet0/0 C       160.10.6.0/24 is directly connected, Loopback0 i L1    160.10.7.0/24 [115/20] via 160.10.22.5, Ethernet0/0 i L1    160.10.4.0/24 [115/20] via 160.10.22.5, Ethernet0/0 i L1    160.10.5.0/24 [115/20] via 160.10.22.5, Ethernet0/0 i L1    160.10.25.0/24 [115/20] via 160.10.22.5, Ethernet0/0 C       160.10.22.0/24 is directly connected, Ethernet0/0 i L1 196.1.2.0/24 [115/20] via 160.10.22.5, Ethernet0/0      40.0.0.0/24 is subnetted, 1 subnets i L1    40.4.4.0 [115/20] via 160.10.22.5, Ethernet0/0      130.200.0.0/24 is subnetted, 1 subnets i L1    130.200.10.0 [115/20] via 160.10.22.5, Ethernet0/0 B    198.18.1.0/24 [20/0] via 170.100.10.254, 01:25:08 i L1 196.1.3.0/24 [115/20] via 160.10.22.5, Ethernet0/0 i L1 196.1.4.0/24 [115/20] via 160.10.22.5, Ethernet0/0 i L1 196.1.5.0/24 [115/20] via 160.10.22.5, Ethernet0/0 i L1 196.1.6.0/24 [115/20] via 160.10.22.5, Ethernet0/0 i L1 196.1.7.0/24 [115/20] via 160.10.22.5, Ethernet0/0 i L1 30.0.0.0/8 [115/20] via 160.10.22.5, Ethernet0/0 R6# R6#ping 160.10.5.5 Type escape sequence to abort. Sending 5, 100-byte ICMP Echos to 160.10.5.5, timeout is 2 seconds: !!!!! Success rate is 100 percent (5/5), round-trip min/avg/max = 1/2/4 ms R6# R6#ping 160.10.2.2 Type escape sequence to abort. Sending 5, 100-byte ICMP Echos to 160.10.2.2, timeout is 2 seconds: !!!!! Success rate is 100 percent (5/5), round-trip min/avg/max = 4/4/4 ms R6# ! ! ________________________________________________________________ R2#sh ip ro Codes: C - connected, S - static, 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        i - IS-IS, L1 - IS-IS level-1, L2 - IS-IS level-2, ia - IS-IS inter area        * - candidate default, U - per-user static route, o - ODR        P - periodic downloaded static route Gateway of last resort is not set O E2 196.1.8.0/24 [110/1] via 160.10.38.4, 06:26:27, Serial0/1.2 B    198.18.10.0/24 [200/0] via 160.10.6.6, 06:26:37 B    200.20.4.0/24 [200/0] via 160.10.6.6, 06:26:37 B    200.20.5.0/24 [200/0] via 160.10.6.6, 06:26:37 O E2 196.1.10.0/24 [110/1] via 160.10.38.4, 06:26:27, Serial0/1.2 B    198.18.8.0/24 [200/0] via 160.10.6.6, 06:26:37 B    200.20.6.0/24 [200/0] via 160.10.6.6, 06:26:37 B    198.18.9.0/24 [200/0] via 160.10.6.6, 06:26:37 B    200.20.7.0/24 [200/0] via 160.10.6.6, 06:26:37      140.200.0.0/24 is subnetted, 1 subnets O E2    140.200.10.0 [110/1] via 160.10.38.4, 06:26:28, Serial0/1.2 B    200.20.1.0/24 [200/0] via 160.10.6.6, 06:26:38 B    200.20.2.0/24 [200/0] via 160.10.6.6, 06:26:38 B    200.20.3.0/24 [200/0] via 160.10.6.6, 06:26:39 B    198.18.2.0/24 [200/0] via 160.10.6.6, 06:26:39 B    198.18.3.0/24 [200/0] via 160.10.6.6, 06:26:39      160.10.0.0/16 is variably subnetted, 17 subnets, 3 masks O       160.10.37.5/32 [110/64] via 160.10.37.5, 06:27:01, Serial0/1.1 C       160.10.32.0/30 is directly connected, Serial0/0 O E2    160.10.33.0/24 [110/100] via 160.10.37.5, 06:26:29, Serial0/1.1 C       160.10.38.0/24 is directly connected, Serial0/1.2 O       160.10.37.1/32 [110/64] via 160.10.37.1, 06:27:01, Serial0/1.1 C       160.10.37.0/24 is directly connected, Serial0/1.1 O IA    160.10.11.0/24 [110/74] via 160.10.37.1, 06:26:51, Serial0/1.1 O E2    160.10.15.0/24 [110/100] via 160.10.37.5, 04:33:49, Serial0/1.1 C       160.10.2.0/24 is directly connected, Loopback0 O       160.10.3.0/24 [110/65] via 160.10.32.1, 06:26:51, Serial0/0 O       160.10.1.0/24 [110/65] via 160.10.37.1, 06:27:01, Serial0/1.1 O E2    160.10.6.0/24 [110/100] via 160.10.37.5, 06:26:30, Serial0/1.1 O IA    160.10.7.0/24 [110/75] via 160.10.37.1, 06:26:53, Serial0/1.1 O       160.10.4.0/24 [110/65] via 160.10.38.4, 06:27:03, Serial0/1.2 O       160.10.5.0/24 [110/65] via 160.10.37.5, 06:27:03, Serial0/1.1 O IA    160.10.25.0/24 [110/65] via 160.10.37.5, 06:26:39, Serial0/1.1 O E2    160.10.22.0/24 [110/100] via 160.10.37.5, 04:33:51, Serial0/1.1 O E2 196.1.2.0/24 [110/1] via 160.10.38.4, 06:26:30, Serial0/1.2      130.200.0.0/24 is subnetted, 1 subnets C       130.200.10.0 is directly connected, FastEthernet0/0 B    198.18.1.0/24 [200/0] via 160.10.6.6, 06:26:41 B    198.18.6.0/24 [200/0] via 160.10.6.6, 06:26:41 B    200.20.8.0/24 [200/0] via 160.10.6.6, 06:26:41 D    193.118.1.0/24 [90/156160] via 130.200.10.200, 1d18h, FastEthernet0/0 B    198.18.7.0/24 [200/0] via 160.10.6.6, 06:26:41 B    200.20.9.0/24 [200/0] via 160.10.6.6, 06:26:41 B    198.18.4.0/24 [200/0] via 160.10.6.6, 06:26:41 B    200.20.10.0/24 [200/0] via 160.10.6.6, 06:26:41 D    193.118.3.0/24 [90/156160] via 130.200.10.200, 1d18h, FastEthernet0/0 B    198.18.5.0/24 [200/0] via 160.10.6.6, 06:26:41 D    193.118.2.0/24 [90/156160] via 130.200.10.200, 1d18h, FastEthernet0/0 R2# ! ! R2#ping 160.10.6.6 Type escape sequence to abort. Sending 5, 100-byte ICMP Echos to 160.10.6.6, timeout is 2 seconds: !!!!! Success rate is 100 percent (5/5), round-trip min/avg/max = 1/3/4 ms R2# 

  • To avoid overloading the CPU of the IS-IS routers on VLAN_22 during LSP transmission and reception, configure the routers to reduce the LSP transmission rate to 100 ms.

To adjust the LSP transmission rate, use the isis lsp-interval command set to 100 ms.

If you configured this correctly as shown in Example 6-35, you have scored 1 point.

Example 6-35. IS-IS LSP Transmission Timer Configuration
 R3#sh run int fa0/0 ! interface FastEthernet0/0  ip address 160.10.22.3 255.255.255.0  ip router isis  isis lsp-interval 100 ! ________________________________________________________________ R5# sh run int fa0/0 ! interface FastEthernet0/0  ip address 160.10.22.5 255.255.255.0  ip router isis  isis lsp-interval 100 ! ________________________________________________________________ R6#sh run int e0/0 ! interface Ethernet0/0  ip address 160.10.22.6 255.255.255.0  ip router isis  isis lsp-interval 100 R6# 




CCIE Routing and Switching Practice Labs
CCIE Routing and Switching Practice Labs
ISBN: 1587051478
EAN: 2147483647
Year: 2006
Pages: 268

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