Configuration of the routing protocol for the source node of the source node.

Concept: 1. neighbor table: the IP address of the directly connected router and the interface connected to it. 2. topology table:. route status: P (passive) A (active) B. feasible distance (FD): The minimum measurement to the destination (metric)
C. Report distance (AD): overhead of the neighbor arriving at the destination network d. Equivalent Load Balancing: The FD values of the two links arriving at the destination are at the same time www.2cto.com
E. successor route: the router with the hop address of the master route (R12 is the successor route of R11) f. feasible successor route: AD2 <FD1, that is, feasible successor route. After the master route fails, feasible successor route is immediately replaced by g. unfeasible route: AD2> FD1. When the main route link fails, you need to recalculate the route.
3. route table: only the best route in the top table is displayed, that is, the next route. the command router VPN 100 100 is the autonomous domain system (AS) no auto-summery disable automatic summary network 192.168.1.254 0.0.0.0 network interface IP address wildcard ....... 5. test 1. topology www.2cto. com2. configure show runR1 # show runBuilding configuration on R1... current configuration: 745 bytes! Version 12.4no service timestamps log datetime msecno service timestamps debug datetime msecno service password-encryption! Hostname R1 !!! No ip domain-lookup! Www.2cto.com! Interface FastEthernet0/0 ip address 172.16.12.1 255.255.0 duplex auto speed auto! Interface FastEthernet0/1 ip address 172.16.14.1 255.255.0 duplex auto speed auto! Interface Ethernet1/0 ip address 10.10.1.254 255.255.255.0 duplex auto speed auto! Interface Vlan1 no ip address shutdown! Router VPN 100 network 10.10.1.254 0.0.0.0 network 172.16.12.1 0.0.0.0 network 172.16.14.1 0.0.0.0 no auto-summary! Ip classless! Www.2cto.com! Line con 0 exec-timeout 0 0 logging synchronousline vty 0 4 login !! Show runR2 # show runBuilding configuration... Current configuration: 709 bytes! Version 12.4no service timestamps log datetime msecno service timestamps debug datetime msecno service password-encryption! Hostname R2 !! No ip domain-lookup !!! Interface Loopback0 ip address 172.16.55.1 255.255.255.0! Interface FastEthernet0/0 ip address 172.16.12.2 255.255.0 duplex auto speed auto! Interface FastEthernet0/1 ip address 172.16.23.2 255.255.0 duplex auto speed auto! Interface Vlan1 no ip address shutdown! Router VPN 100 network 172.16.12.0 0.0.0.255 network 172.16.23.0 0.0.0.255 no auto-summary! Www.2cto. comip classless !! Line con 0 exec-timeout 0 0 logging synchronousline vty 0 4 login !!! Show runR2 # show runBuilding configuration... Current configuration: 709 bytes on end R3! Version 12.4no service timestamps log datetime msecno service timestamps debug datetime msecno service password-encryption! Hostname R2 !! No ip domain-lookup !! Interface Loopback0 ip address 172.16.55.1 255.255.255.0! Interface FastEthernet0/0 ip address 172.16.12.2 255.255.0 duplex auto speed auto! Interface FastEthernet0/1 ip address 172.16.23.2 255.255.0 duplex auto speed auto! Interface Vlan1 no ip address shutdown! Router VPN 100 network 172.16.12.0 0.0.0.255 network 172.16.23.0 0.0.0.255 network 172.16.0.0 no auto-summary! Www.2cto. comip classless !! Line con 0 exec-timeout 0 0 logging synchronousline vty 0 4 login !! Show runR4 # show runBuilding configuration... Current configuration: 625 bytes! Version 12.4no service timestamps log datetime msecno service timestamps debug datetime msecno service password-encryption! Hostname R4 !! No ip domain-lookup !! Interface FastEthernet0/0 ip address 172.16.14.4 255.255.255.0 duplex auto speed auto! Interface FastEthernet0/1 ip address 172.16.34.4 255.255.255.0 duplex auto speed auto! Interface Vlan1 no ip address shutdown! Router VPN 100 network 172.16.14.4 0.0.0.0 network 172.16.34.4 0.0.0.0 no auto-summary! Ip classless !! Line con 0 exec-timeout 0 0 logging synchronousline vty 0 4 login !! End 3. view the neighbor table, topology table, and route table www.2cto on each vro. comR1 # R1 # show ip glasneiip-VPN neighbors for process 100 H Address Interface Hold Uptime srtt rto q Seq (sec) (MS) cnt Num0 172.16.14.4 Fa0/1 14 00:37:13 40 1000 0 331 172.16.12.2 Fa0/0 12 00:11:34 40 1000 0 42 R1 # show ip VPN topIP-VPN Topology Table for AS 100 Codes: p-Passive, A-Active, U-Update, Q-Query, R-Reply, r-Reply status P 10.10.1.0/24, 1 successors, FD is 281600via Connected, ethernet1/0 P 172.16.14.0/24, 1 successors, FD is 28160via Connected CTED, FastEthernet0/1 P 172.16.23.0/24, 1 successors, FD is 30720via 172.16.12.2 (30720/28160 ), fastEthernet0/0 P 172.16.34.0/24, 1 successors, FD is 30720via 172.16.14.4 (30720/28160), FastEthernet0/1 P 192.168.1.0/24, 2 successors, FD is 286720via 172.16.14.4 (286720/284160 ), fastEthernet0/1via 172.16.12.2 (286720/284160), FastEthernet0/0 P 172.16.55.0/24, 1 successors, FD is 156160via Fax (156160/128256), FastEthernet0/0 P 172.16.12.0/24, 1 successors, FD is 28160via Connected, FastEthernet0/0R1 # www.2cto. comR1 # show ip routeCodes: C-connected, S-static, I-IGRP, R-RIP, M-mobile, B-BGPD-VPN, EX-VPN external, o-OSPF, IA-OSPF inter areaN1-ospf nssa external type 1, N2-ospf nssa external type 2E1-OSPF external type 1, E2-OSPF external type 2, e-EGPi-IS, L1-IS level-1, L2-IS level-2, ia-IS inter area *-candidate default, u-per-user static route, o-ODRP-periodic downloaded static route Gateway of last resort is not set 10.0.0.0/24 is subnetted, 1 subnetsC 10.10.1.0 is directly connected, ethernet1/clusters/24 is subnetted, 5 subnetsC 172.16.12.0 is directly connected, FastEthernet0/0C 172.16.14.0 is directly connected, FastEthernet0/1D 172.16.23.0 [90/30720] via 172.16.12.2, 00:11:56, fastEthernet0/0D 172.16.34.0 [90/30720] via 172.16.14.4, 00:37:16, FastEthernet0/1D 172.16.55.0 [90/156160] via 172.16.12.2, 00:11:56, FastEthernet0/0D 192.168.1.0/24 [90/286720] via 172.16.14.4, 00:37:16, fastEthernet0/1 [90/286720] via 172.16.12.2, 00:11:56, FastEthernet0/0R1 # R2 # show ip: VPN neiIP-VPN neighbors for process 100 H Address Interface Hold Uptime srtt rto q Seq (sec) (MS) Cnt Num0 172.16.12.1 Fa0/0 12 00:25:57 40 1000 0 451 172.16.23.3 Fa0/1 12 00:25:45 40 1000 0 40 R2 # show ip VPN topIP-VPN Topology Table for AS 100 Codes: p-Passive, A-Active, U-Update, Q-Query, R-Reply, r-Reply status P 172.16.12.0/24, 1 successors, FD is 28160 via Connected, fastEthernet0/0 P 10.10.1.0/24, 1 successors, FD is 284160 via 172.16.12.1 (284160/281600), FastEthernet0/0 P 172.16.14.0/24, 1 successors, FD is 30720 via 172.16.12.1 (30720/28160 ), fastEthernet0/0 P 172.16.23.0/24, 1 successors, FD is 28160 via Connected, FastEthernet0/1 P 172.16.34.0/24, 1 successors, FD is 30720 via 172.16.23.3 (30720/28160 ), fastEthernet0/1 P 192.168.1.0/24, 1 successors, FD is 284160 via 172.16.23.3 (284160/281600), FastEthernet0/1R2 # R2 # show ip routeCodes: C-connected, S-static, i-IGRP, R-RIP, M-mobile, B-BGP D-VPN, EX-VPN 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, L1-IS level-1, L2-IS level-2, ia-IS inter area *-candidate default, u-per-user static route, o-odr p-periodic downloaded static route Gateway of last resort is not set 10.0.0.0/24 is subnetted, 1 subnetsD 10.10.1.0 [90/284160] via 172.16.12.1, 00:26:08, FastEthernet0/0 172.16.0.0/24 is subnetted, 5 subnetsC 172.16.12.0 is directly connected, FastEthernet0/0D success [90/30720] via success, 00:26:08, FastEthernet0/0C 172.16.23.0 is directly connected, fastEthernet0/1D 172.16.34.0 [90/30720] via 172.16.23.3, 00:25:57, FastEthernet0/1C 172.16.55.0 is directly connected, Loopback0D 192.168.1.0/24 [90/284160] via 172.16.23.3, 00:25:57, fastEthernet0/1R2 # R3 # R3 # show ip OSPF neiIP-VPN neighbors for process 100 H Address Interface Hold Uptime srtt rto q Seq (sec) (MS) cnt Num0 172.16.23.2 Fa0/0 13 00:42:47 40 1000 0 411 172.16.34.4 Fa0/1 13 00:40:25 40 1000 0 32 R3 # show ip VPN topIP-VPN Topology Table for AS 100 Codes: p-Passive, A-Active, U-Update, Q-Query, R-Reply, r-Reply status P 172.16.23.0/24, 1 successors, FD is 28160via Connected, fastEthernet0/0 P 10.10.1.0/24, 2 successors, FD is 286720via temperature (286720/284160), FastEthernet0/1via 172.16.23.2 (286720/284160), FastEthernet0/0 P 172.16.14.0/24, 1 successors, FD is 30720 via 172.16.34.4 (30720/28160), FastEthernet0/1 P 172.16.34.0/24, 1 successors, FD is 28160via Connected, FastEthernet0/1 P 192.168.1.0/24, 1 successors, FD is 281600via Connected, Ethernet1/0 P 172.16.55.0/24, 1 successors, FD is 156160via 172.16.23.2 (156160/128256), FastEthernet0/0 P 172.16.12.0/24, 1 successors, FD is 30720via 172.16.23.2 (30720/28160), FastEthernet0/0R3 # R3 # show ip routeCodes: C-connected, S-static, I-IGRP, R-RIP, M-mobile, b-BGPD-OSPF, EX-OSPF external, O-OSPF, IA-OSPF inter areaN1-OSPF NSSA external type 1, N2-OSPF NSSA external type 2E1-OSPF external type 1, e2-OSPF external type 2, E-EGPi-IS, L1-IS level-1, L2-IS level-2, ia-IS inter area *-candidate default, U-per-user static route, o-ODRP-periodic downloaded static route Gateway of last resort is not set 10.0.0.0/24 is subnetted, 1 subnetsD 10.10.1.0 [90/286720] via 172.16.34.4, 00:40:37, fastEthernet0/1 [90/286720] via 172.16.23.2, 00:15:18, FastEthernet0/0172.16.0.0/24 is subnetted, 5 subnetsD versions [90/30720] via 172.16.23.2, 00:15:19, FastEthernet0/0D 172.16.14.0 [90/30720] via Region, 00:40:37, FastEthernet0/1C plugin is directly connected, FastEthernet0/0C connector is directly connected, FastEthernet0/1D plugin [90/156160] via 172.16.23.2, 00:27:28, FastEthernet0/0C 192.168.1.0/24 is directly connected, ethernet1/0R3 # R4 # show ip glasneiip-Kerberos neighbors for process 100 H Address Interface Hold Uptime srtt rto q Seq (sec) (MS) cnt Num0 172.16.14.1 Fa0/0 10 00:42:01 40 1000 0 341 172.16.34.3 Fa0/1 12 00:41:40 40 1000 0 29 R4 # show ip VPN topIP-VPN Topology Table for AS 100 Codes: p-Passive, A-Active, U-Update, Q-Query, R-Reply, r-Reply status P 172.16.14.0/24, 1 successors, FD is 28160via Connected, fastEthernet0/0 P 10.10.1.0/24, 1 successors, FD is 284160via 172.16.14.1 (284160/281600), FastEthernet0/0 P 172.16.23.0/24, 1 successors, FD is 30720 via 172.16.34.3 (30720/28160 ), fastEthernet0/1 P 172.16.34.0/24, 1 successors, FD is 28160via Connected, FastEthernet0/1 P 192.168.1.0/24, 1 successors, FD is 284160via 172.16.34.3 (284160/281600 ), fastEthernet0/1 P 172.16.55.0/24, 2 successors, FD is 158720via temperature (158720/156160), FastEthernet0/1via 172.16.14.1 (158720/156160), FastEthernet0/0 P 172.16.12.0/24, 1 successors, FD is 30720via 172.16.14.1 (30720/28160), FastEthernet0/0R4 # R4 # show ip routeCodes: C-connected, S-static, I-IGRP, R-RIP, M-mobile, b-BGPD-OSPF, EX-OSPF external, O-OSPF, IA-OSPF inter areaN1-OSPF NSSA external type 1, N2-OSPF NSSA external type 2E1-OSPF external type 1, e2-OSPF external type 2, E-EGPi-IS, L1-IS level-1, L2-IS level-2, ia-IS inter area *-candidate default, U-per-user static route, o-ODRP-periodic downloaded static route Gateway of last resort is not set 10.0.0.0/24 is subnetted, 1 subnetsD 10.10.1.0 [90/284160] via 172.16.14.1, 00:42:12, FastEthernet0/0172.16.0.0/24 is subnetted, 5 subnetsD plugin [90/30720] via 172.16.14.1, 00:16:33, FastEthernet0/0C 172.16.14.0 is directly connected, FastEthernet0/0D 172.16.23.0 [90/30720] via plugin, 00:41:52, FastEthernet0/1C plugin is directly connected, fastEthernet0/1D 172.16.55.0 [90/158720] via 172.16.34.3, 00:28:42, FastEthernet0/1 [90/158720] via 172.16.14.1, 00:16:32, FastEthernet0/0D 192.168.1.0/24 [90/284160] via 172.16.34.3, 00:41:52, fastEthernet0/1R4 #4. verify route configuration results