Service Provider Network Configuration with OSPF 411 interface Serial0 description *** Link to Atlanta POP *** ip address 192.168.3.5 255.255.255.252 no fair-queue ! interface Serial1 no ip address shutdown ! router bgp 65001 no synchronization bgp log-neighbor-changes redistribute connected neighbor 192.168.3.6 remote-as 65000 no auto-summary ! ip classless no ip http server ! ! line con 0 exec-timeout 0 0 privilege level 15 logging synchronous transport input none ip netmask-format decimal line aux 0 line vty 0 4 privilege level 15 password cisco logging synchronous login ip netmask-format decimal ! end Simpo PDF Merge and Split Unregistered Version - http://www.simpopdf.com Copyright ©2002 SYBEX, Inc., Alameda, CA www.sybex.com 412 Appendix B Service Provider Tag Switching with OSPF and IS-IS Atlanta POP Router Configuration On the Atlanta POP router, standard OPSF is configured as the IGP. I-BGP is set up between the Atlanta and Raleigh POP routers. An E-BGP session is set up between the Atlanta POP router and Peer 1. Tag switching is enabled only on the internal service provider link. Atlanta# show running-config Building configuration Current configuration : 1572 bytes ! version 12.1 service timestamps debug uptime service timestamps log uptime no service password-encryption ! hostname Atlanta ! enable password cisco ! ! ! ! ! memory-size iomem 25 ip subnet-zero ip tcp synwait-time 5 no ip domain-lookup ! ip cef cns event-service server ! ! ! ! ! Simpo PDF Merge and Split Unregistered Version - http://www.simpopdf.com Copyright ©2002 SYBEX, Inc., Alameda, CA www.sybex.com Service Provider Network Configuration with OSPF 413 interface Loopback0 ip address 204.134.83.1 255.255.255.255 ! interface Serial0/0 description *** Link to Core Router *** ip address 204.134.83.5 255.255.255.252 tag-switching ip no fair-queue clockrate 64000 ! interface Serial0/1 description *** Link to Peer1 *** ip address 192.168.3.6 255.255.255.252 clockrate 64000 ! interface Serial0/2 no ip address shutdown clockrate 64000 ! interface Serial0/3 no ip address shutdown clockrate 64000 ! interface Ethernet1/0 no ip address shutdown ! interface Ethernet1/1 no ip address shutdown ! interface Ethernet1/2 no ip address shutdown ! Simpo PDF Merge and Split Unregistered Version - http://www.simpopdf.com Copyright ©2002 SYBEX, Inc., Alameda, CA www.sybex.com 414 Appendix B Service Provider Tag Switching with OSPF and IS-IS interface Ethernet1/3 no ip address shutdown ! router ospf 1 log-adjacency-changes network 204.134.83.1 0.0.0.0 area 0 network 204.134.83.5 0.0.0.0 area 0 ! router bgp 65000 no synchronization bgp log-neighbor-changes neighbor 192.168.3.5 remote-as 65001 neighbor 204.134.83.3 remote-as 65000 neighbor 204.134.83.3 update-source Loopback0 neighbor 204.134.83.3 next-hop-self no auto-summary ! ip classless no ip http server ! ! ! line con 0 exec-timeout 0 0 privilege level 15 logging synchronous transport input none ip netmask-format decimal line aux 0 line vty 0 4 privilege level 15 password cisco logging synchronous login ip netmask-format decimal ! end Simpo PDF Merge and Split Unregistered Version - http://www.simpopdf.com Copyright ©2002 SYBEX, Inc., Alameda, CA www.sybex.com Service Provider Network Configuration with OSPF 415 Core Router Configuration On the Core router, standard OPSF is configured as the IGP. Tag switching is enabled on the two service provider links. Core# show running-config Building configuration Current configuration : 1353 bytes ! version 12.1 service timestamps debug uptime service timestamps log uptime no service password-encryption ! hostname Core ! enable password cisco ! ! ! ! ! memory-size iomem 25 ip subnet-zero ip tcp synwait-time 5 no ip domain-lookup ! ip cef cns event-service server ! ! ! ! ! interface Loopback0 ip address 204.134.83.2 255.255.255.255 ! Simpo PDF Merge and Split Unregistered Version - http://www.simpopdf.com Copyright ©2002 SYBEX, Inc., Alameda, CA www.sybex.com 416 Appendix B Service Provider Tag Switching with OSPF and IS-IS interface Serial0/0 description *** Connection to Raleigh POP *** ip address 204.134.83.9 255.255.255.252 tag-switching ip no fair-queue ! interface Serial0/1 description *** Connection to Atlanta POP *** ip address 204.134.83.6 255.255.255.252 tag-switching ip ! interface Serial0/2 no ip address shutdown ! interface Serial0/3 no ip address shutdown ! interface Ethernet1/0 no ip address shutdown ! interface Ethernet1/1 no ip address shutdown ! interface Ethernet1/2 no ip address shutdown ! interface Ethernet1/3 no ip address shutdown ! Simpo PDF Merge and Split Unregistered Version - http://www.simpopdf.com Copyright ©2002 SYBEX, Inc., Alameda, CA www.sybex.com Service Provider Network Configuration with OSPF 417 router ospf 1 log-adjacency-changes network 204.134.83.2 0.0.0.0 area 0 network 204.134.83.6 0.0.0.0 area 0 network 204.134.83.9 0.0.0.0 area 0 ! ip classless no ip http server ! ! ! line con 0 exec-timeout 0 0 privilege level 15 logging synchronous transport input none ip netmask-format decimal line aux 0 line vty 0 4 privilege level 15 password cisco logging synchronous login ip netmask-format decimal ! end Raleigh POP Router Configuration On the Raleigh POP router, standard OPSF is configured as the IGP. I-BGP is set up between the Raleigh and Atlanta POP routers. An E-BGP session is set up between the Raleigh POP and Peer2. Tag switching is enabled only on the internal service provider link. Raleigh# show running-config Building configuration Simpo PDF Merge and Split Unregistered Version - http://www.simpopdf.com Copyright ©2002 SYBEX, Inc., Alameda, CA www.sybex.com 418 Appendix B Service Provider Tag Switching with OSPF and IS-IS Current configuration : 1599 bytes ! version 12.1 service timestamps debug uptime service timestamps log uptime no service password-encryption ! hostname Raleigh ! enable password cisco ! ! ! ! ! memory-size iomem 25 ip subnet-zero ip tcp synwait-time 5 no ip domain-lookup ! ip cef cns event-service server ! ! ! ! ! interface Loopback0 ip address 204.134.83.3 255.255.255.255 ! interface Serial0/0 no ip address shutdown no fair-queue clockrate 64000 ! Simpo PDF Merge and Split Unregistered Version - http://www.simpopdf.com Copyright ©2002 SYBEX, Inc., Alameda, CA www.sybex.com Service Provider Network Configuration with OSPF 419 interface Serial0/1 description *** Link to Peer2 *** ip address 192.168.3.9 255.255.255.252 clockrate 64000 ! interface Serial0/2 no ip address shutdown clockrate 64000 ! interface Serial0/3 description *** Link to Core Router *** ip address 204.134.83.10 255.255.255.252 tag-switching ip clockrate 64000 ! interface Ethernet1/0 no ip address shutdown ! interface Ethernet1/1 no ip address shutdown ! interface Ethernet1/2 no ip address shutdown ! interface Ethernet1/3 no ip address shutdown ! router ospf 1 log-adjacency-changes network 204.134.83.3 0.0.0.0 area 0 network 204.134.83.10 0.0.0.0 area 0 ! Simpo PDF Merge and Split Unregistered Version - http://www.simpopdf.com Copyright ©2002 SYBEX, Inc., Alameda, CA www.sybex.com 420 Appendix B Service Provider Tag Switching with OSPF and IS-IS router bgp 65000 no synchronization bgp log-neighbor-changes neighbor 192.168.3.10 remote-as 65002 neighbor 204.134.83.1 remote-as 65000 neighbor 204.134.83.1 update-source Loopback0 neighbor 204.134.83.1 next-hop-self no auto-summary ! ip classless no ip http server ! ! ! line con 0 exec-timeout 0 0 privilege level 15 logging synchronous transport input none ip netmask-format decimal line aux 0 line vty 0 4 privilege level 15 password cisco logging synchronous login ip netmask-format decimal ! end Peer 2 Router Configuration On the Peer 2 router, MPLS is not enabled; only standard BGP is enabled. Peer2# show running-config Building configuration Simpo PDF Merge and Split Unregistered Version - http://www.simpopdf.com Copyright ©2002 SYBEX, Inc., Alameda, CA www.sybex.com [...]... 255.255.255.0 is variably subnetted, 5 subnets, 2 masks 204.134.83.8 255.255.255.252 is directly connected, Serial0/0 204.134.83.1 255.255.255.255 [ 110/ 782] via 204.134.83.5, 00 :10: 51, Serial0/1 204.134.83.3 255.255.255.255 [ 110/ 782] via 204.134.83 .10, 00 :10: 51, Serial0/0 204.134.83.2 255.255.255.255 is directly connected, Loopback0 204.134.83.4 255.255.255.252 is directly connected, Serial0/1 Copyright... is not set 204.134.83.0 255.255.255.0 is variably subnetted, 5 subnets, 2 masks O 204.134.83.8 255.255.255.252 [ 110/ 1562] via 204.134.83.6, 00 :10: 08, Serial0/0 C 204.134.83.1 255.255.255.255 is directly connected, Loopback0 O 204.134.83.3 255.255.255.255 [ 110/ 1563] via 204.134.83.6, 00 :10: 08, Serial0/0 Copyright ©2002 SYBEX, Inc., Alameda, CA www.sybex.com Simpo PDF Merge and Split Unregistered Version... 204.134.83.1 255.255.255.255 [ 110/ 1563] via 204.134.83.9, 00:11:17, Serial0/3 204.134.83.3 255.255.255.255 is directly connected, Loopback0 204.134.83.2 255.255.255.255 [ 110/ 782] via 204.134.83.9, 00:11:17, Serial0/3 204.134.83.4 255.255.255.252 [ 110/ 1562] via 204.134.83.9, 00:11:17, Serial0/3 192.168.1.0 255.255.255.255 is subnetted, 1 subnets 192.168.1.1 [200/0] via 204.134.83.1, 00 :10: 33 192.168.2.0 255.255.255.255... uptime no service password-encryption ! hostname Peer2 ! enable password cisco ! ! ! ! ! ip subnet-zero ip tcp synwait-time 5 no ip domain-lookup ! ! ! ! interface Loopback0 ip address 192.168.2.1 255.255.255.255 ! interface Ethernet0 no ip address shutdown ! interface Serial0 description *** Link to Raleigh POP *** ip address 192.168.3 .10 255.255.255.252 no fair-queue ! interface Serial1 no ip address shutdown... www.sybex.com Simpo PDF Merge and Split Unregistered Version - http://www.simpopdf.com 424 Appendix B Service Provider Tag Switching with OSPF and IS-IS O C B B B C 204.134.83.2 255.255.255.255 [ 110/ 782] via 204.134.83.6, 00 :10: 08, Serial0/0 204.134.83.4 255.255.255.252 is directly connected, Serial0/0 192.168.1.0 255.255.255.255 is subnetted, 1 subnets 192.168.1.1 [20/0] via 192.168.3.5, 00:22:47 192.168.2.0... 192.168.1.1 [200/0] via 204.134.83.1, 00 :10: 33 192.168.2.0 255.255.255.255 is subnetted, 1 subnets 192.168.2.1 [20/0] via 192.168.3 .10, 00:24:05 192.168.3.0 255.255.255.252 is subnetted, 2 subnets 192.168.3.8 is directly connected, Serial0/1 192.168.3.4 [200/0] via 204.134.83.1, 00 :10: 34 Peer 2 Routing Table On the Peer 2 router, no service provider routes are displayed in the routing table: Peer2#show ip... 192.168.2.1/32 192.168.3 .10/ 30 Table B.4 lists the IP addresses and interfaces of the service provider devices in Figure B.3 TABLE B.4 Service Provider Addressing Device Loopback 0 Serial 0/0 Serial 0/1 Serial 0/3 Atlanta 204.134.83.1/32 204.134.83.5/30 192.168.3.6/30 N/A Core 204.134.83.2/32 204.134.83.9/30 204.134.83.6/30 N/A Raleigh 204.134.83.3/32 N/A 192.168.3.9/30 204.134.83 .10/ 30 Router Configuration... neighbor 192.168.3 .10 neighbor 204.134.83.1 neighbor 204.134.83.1 neighbor 204.134.83.1 no auto-summary 439 remote-as 65002 remote-as 65000 update-source Loopback0 next-hop-self ! ip classless no ip http server ! ! ! line con 0 exec-timeout 0 0 privilege level 15 logging synchronous transport input none ip netmask-format decimal line aux 0 line vty 0 4 privilege level 15 password cisco logging synchronous... uptime no service password-encryption ! hostname Peer2 ! enable password cisco ! ! ! ! ! ip subnet-zero ip tcp synwait-time 5 no ip domain-lookup ! ! ! ! interface Loopback0 ip address 192.168.2.1 255.255.255.255 ! interface Ethernet0 no ip address shutdown ! interface Serial0 description *** Link to Raleigh POP *** ip address 192.168.3 .10 255.255.255.252 no fair-queue ! interface Serial1 no ip address shutdown... http://www.simpopdf.com Service Provider Network Configuration with IS-IS 429 version 12.1 service timestamps debug uptime service timestamps log uptime no service password-encryption ! hostname Peer1 ! enable password cisco ! ! ! ! ! ip subnet-zero ip tcp synwait-time 5 no ip domain-lookup ! ! ! ! interface Loopback0 ip address 192.168.1.1 255.255.255.255 ! interface Ethernet0 no ip address shutdown ! interface Serial0 . Serial0/0 O 204.134.83.1 255.255.255.255 [ 110/ 782] via 204.134.83.5, 00 :10: 51, Serial0/1 O 204.134.83.3 255.255.255.255 [ 110/ 782] via 204.134.83 .10, 00 :10: 51, Serial0/0 C 204.134.83.2 255.255.255.255. 255.255.255.252 [ 110/ 1562] via 204.134.83.6, 00 :10: 08, Serial0/0 C 204.134.83.1 255.255.255.255 is directly connected, Loopback0 O 204.134.83.3 255.255.255.255 [ 110/ 1563] via 204.134.83.6, 00 :10: 08, Serial0/0 Simpo. Service Provider Tag Switching with OSPF and IS-IS O 204.134.83.2 255.255.255.255 [ 110/ 782] via 204.134.83.6, 00 :10: 08, Serial0/0 C 204.134.83.4 255.255.255.252 is directly connected, Serial0/0