Cisco CRS Configuration Manual page 10

Contents
Cisco IOS XR Virtual Private Network Configuration Guide for the Cisco CRS Router, Release 6.1.x
x
MPLS Forwarding
177
Automatic Route Distinguisher Assignment
MPLS L3VPN Major Components
Inter-AS Support for L3VPN
Inter-AS Restrictions
178
Inter-AS Support: Overview
Inter-AS and ASBRs
179
Transmitting Information Between Autonomous Systems
Exchanging VPN Routing Information
Packet Forwarding
183
Confederations
186
MPLS VPN Inter-AS BGP Label Distribution
Exchanging IPv4 Routes with MPLS labels
BGP Routing Information
BGP Messages and MPLS Labels
Sending MPLS Labels with Routes
Generic Routing Encapsulation Support for L3VPN
GRE Restriction for L3VPN
VPNv4 Forwarding Using GRE Tunnels
Ingress of Encapsulation Router
Egress of Encapsulation Router
Ingress of Decapsulation Router
Egress of Decapsulation Router
Carrier Supporting Carrier Support for L3VPN
CSC Prerequisites
192
CSC Benefits 192
Configuration Options for the Backbone and Customer Carriers
Customer Carrier: ISP with IP Core
Customer Carrier: MPLS Service Provider
IPv6 VPN Provider Edge (6VPE) Support
6VPE Benefits
194
6VPE Network Architecture
Dual Stack 195
6VPE Operation
196
How to Implement MPLS Layer 3 VPNs
177
178
178
178
181
188
188
189
189
190
190
190
191
191
191
191
191
191
193
194
194
195
196
180
193