- •Acknowledgments
- •Introduction
- •Assessment Test
- •Answers to Assessment Test
- •Service Provider Networks
- •Scalability
- •Traffic Engineering
- •Quality of Service
- •MPLS Label Stack
- •Shim Header
- •MPLS Architecture
- •Control
- •Forwarding
- •MPLS Label Switching
- •MPLS Network Components
- •Device Output
- •Label-Switched Paths
- •MPLS Applications
- •MPLS and ATM
- •Overlay
- •Quality of Service
- •Traffic Engineering
- •Summary
- •Exam Essentials
- •Key Terms
- •Review Questions
- •Answers to Review Questions
- •Routing Review
- •Frame-Mode MPLS Working Example
- •Network Routing Protocol Examples
- •MPLS Step by Step
- •Label Distribution
- •Assigning Labels
- •Troubleshooting and Verification
- •Device Configuration
- •IGP Verification
- •CEF Verification
- •MPLS Verification
- •Label Distribution and Bindings
- •Binding Verification
- •Troubleshooting the Network
- •Hiding Service Provider Devices
- •Summary
- •Exam Essentials
- •Key Terms
- •Review Questions
- •Answers to Review Questions
- •Frame-Mode MPLS and ATM
- •Frame-Mode MPLS and ATM Configuration
- •Cell-Mode MPLS
- •Label Binding with ATM
- •Cell-Mode Label Switching
- •VC Merge
- •Loop Prevention
- •Cell-Mode MPLS Configuration
- •Summary
- •Exam Essentials
- •Key Terms
- •Review Questions
- •Answers to Review Questions
- •VPNs 101
- •Point-to-Point Connections
- •Virtual Private Networks
- •Categories of VPNs
- •VPN Routing
- •Peer-to-Peer VPNs
- •Optimal Routing
- •Peer-to-Peer Security
- •Peer-to-Peer VPN Routing
- •Summary
- •Exam Essentials
- •Key Terms
- •Review Questions
- •Answers to Review Questions
- •Service Provider Configuration
- •MPLS VPNs
- •Virtual Router
- •Virtual Routing and Forwarding Tables
- •MPLS Operational Overview
- •MP-BGP Configuration
- •An MPLS VPN Example
- •Route Distinguisher
- •MP-IBGP Configuration Example
- •Initial Network Configuration
- •MP-IBGP Configuration
- •Verification
- •Summary
- •Exam Essentials
- •Key Terms
- •Review Questions
- •Answers to Review Questions
- •A Review of VPNs
- •Configuring a Simple MPLS VPN
- •Configuring VRF Interfaces
- •Running RIP in an MPLS VPN
- •Configuring RIPv2 with Address-Family ipv4
- •Configuring Redistribution
- •Route Targets
- •Configuring Route Targets
- •A Review of Simple VPN Configuration
- •Configuring MPLS in the Service Provider Network
- •Simple VPN Configuration
- •Configuring the PE-CE Routing Protocol
- •Lab: Configuring an MPLS VPN
- •Configuring POP Routers
- •VPN Configuration
- •Raleigh Running-Config
- •Atlanta Running-Config
- •Peer 1 Running-Config
- •Peer 2 Running-Config
- •Verification with Ping
- •Routing Table Isolation
- •Verifying VRF Routes
- •Summary
- •Exam Essentials
- •Key Terms
- •Review Questions
- •Answers to Review Questions
- •MP-BGP and OSPF
- •A Review of OSPF
- •OSPF Router Types
- •Link State Advertisements
- •OSPF for MPLS VPNs
- •OSPF Super-Backbone
- •Preventing Routing Loops
- •Path Selection
- •MPLS VPN OSPF Lab
- •Summary
- •Exam Essentials
- •Key Terms
- •Review Questions
- •Answers to Review Questions
- •Static Routing
- •Device Configuration
- •VPN Configuration
- •Raleigh Running-Config
- •Atlanta Running-Config
- •Peer Router Configuration
- •Verification with Ping
- •Verifying Static VRF Routes
- •E-BGP and MPLS VPNs
- •Device Configuration
- •E-BGP Operation
- •AS-Override
- •VPN Configuration
- •Raleigh Running-Config
- •Atlanta Running-Config
- •Peer Router Configuration
- •Peer 1 Running-Config
- •Peer 2 Running-Config
- •Verification with Ping
- •Advanced MPLS VPN Topologies
- •Simple VPNs
- •Central Services MPLS VPN Topology
- •Overlay MPLS VPN Topology
- •Summary
- •Exam Essentials
- •Key Terms
- •Review Questions
- •Answers to Review Questions
- •Challenge Lab 1
- •MPLS
- •MP-IBGP
- •Answer to Lab 1.1
- •Answer to Lab 1.2
- •Answer to Lab 1.3
- •Challenge Lab 2
- •Tag Switching
- •MP-IBGP
- •Answer to Lab 2.1
- •Answer to Lab 2.2
- •Answer to Lab 2.3
- •Challenge Lab 3
- •VRF Configuration
- •RIPv2
- •Redistribution
- •Answer to Lab 3.1
- •Answer to Lab 3.2
- •Answer to Lab 3.3
- •Challenge Lab 4
- •VRF Configuration
- •OSPF
- •Redistribution
- •Answer to Lab 4.1
- •Answer to Lab 4.2
- •Answer to Lab 4.3
- •Challenge Lab 5
- •VRF Configuration
- •Static Routes and Redistribution
- •Answer to Lab 5.1
- •Answer to Lab 5.2
- •Challenge Lab 6
- •VRF Configuration
- •E-BGP Configuration
- •Answer to Lab 6.1
- •Answer to Lab 6.2
- •Service Provider Network Configuration with OSPF
- •Router Configuration
- •Routing Tables
- •Tags
- •Service Provider Network Configuration with IS-IS
- •Router Configuration
- •Routing Tables
- •Tag Switching Forwarding Tables
- •Glossary
360 Chapter 8 Advanced MPLS Topics
login
ip netmask-format decimal
!
end
Peer Router Configuration
The Peer 1 and Peer 2 routers need to be configured for standard E-BGP.
The configuration of the Peer 1 router is as follows:
Peer1#conf t
Enter configuration commands, one per line. End with CNTL/Z. Peer1(config)#router bgp 65001
Peer1(config-router)#neighbor 192.168.3.6 remote-as 65000
Peer1(config-router)#redistribute connected Peer1(config-router)#^Z
Peer1#
The configuration of the Peer 2 router is as follows:
Peer2#conf t
Enter configuration commands, one per line. End with CNTL/Z. Peer2(config)#router bgp 65001
Peer2(config-router)#neighbor 192.168.3.9 remote-as 65000
Peer2(config-router)#redistribute connected Peer2(config-router)#^Z
Peer2#
To verify static routes on the Peer 1 router, use the show ip route command:
Peer1#show ip route
.
. Output Omitted
.
Gateway of last resort is not set
192.168.1.0 255.255.255.255 is subnetted, 1 subnets C 192.168.1.1 is directly connected, Loopback0
192.168.2.0 255.255.255.255 is subnetted, 1 subnets
Copyright ©2002 SYBEX, Inc., Alameda, CA |
www.sybex.com |
E-BGP and MPLS VPNs 361
B192.168.2.1 [20/0] via 192.168.3.6, 00:05:08 192.168.3.0 255.255.255.252 is subnetted, 2 subnets
B192.168.3.8 [20/0] via 192.168.3.6, 00:06:35
C192.168.3.4 is directly connected, Serial0
To verify static routes on the Peer 2 router, use the show ip route command:
Peer2#show ip route
.
. Output Omitted
.
Gateway of last resort is not set
192.168.1.0 255.255.255.255 is subnetted, 1 subnets B 192.168.1.1 [20/0] via 192.168.3.9, 00:04:02
192.168.2.0 255.255.255.255 is subnetted, 1 subnets
C192.168.2.1 is directly connected, Loopback0 192.168.3.0 255.255.255.252 is subnetted, 2 subnets
C192.168.3.8 is directly connected, Serial0
B192.168.3.4 [20/0] via 192.168.3.9, 00:04:31
Peer 1 Running-Config
Notice in the Peer 1 running-config that there is an E-BGP connection to the Atlanta POP router:
Peer1#show running-config
Building configuration...
Current configuration : 914 bytes
!
version 12.1
service timestamps debug uptime service timestamps log uptime no service password-encryption
!
hostname Peer1
!
Copyright ©2002 SYBEX, Inc., Alameda, CA |
www.sybex.com |
362 Chapter 8 Advanced MPLS Topics
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
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
!
Copyright ©2002 SYBEX, Inc., Alameda, CA |
www.sybex.com |
E-BGP and MPLS VPNs 363
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 Running-Config
Notice in the Peer 2 running-config that there is an E-BGP connection to the Atlanta POP router:
Peer2#show running-config
Building configuration...
Current configuration : 1141 bytes
!
version 12.1
service timestamps debug uptime service timestamps log uptime no service password-encryption
!
hostname Peer2
!
Copyright ©2002 SYBEX, Inc., Alameda, CA |
www.sybex.com |
364 Chapter 8 Advanced MPLS Topics
enable password lab
!
!
!
!
!
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 PE2 ***
ip address 192.168.3.10 255.255.255.252 no fair-queue
!
interface Serial1 no ip address shutdown
!
router bgp 65001
no synchronization
bgp log-neighbor-changes redistribute connected
neighbor 192.168.3.9 remote-as 65000 no auto-summary
Copyright ©2002 SYBEX, Inc., Alameda, CA |
www.sybex.com |