Information About 6Pe/Vpe; Overview Of 6Pe/Vpe; Benefits Of 6Pe/Vpe - Cisco CRS Configuration Manual
Ios xr virtual private network
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- Configuration manual (430 pages) ,
- User manual (304 pages) ,
- Command reference manual (155 pages)
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Information About 6PE/VPE
• You must be in a user group associated with a task group that includes the proper task IDs. The command
• Familiarity with MPLS and BGP4 configuration and troubleshooting.
Information About 6PE/VPE
To configure the 6PE/VPE feature, you should understand the concepts that are described in these sections:
Overview of 6PE/VPE
Multiple techniques are available to integrate IPv6 services over service provider core backbones:
• Dedicated IPv6 network running over various data link layers
• Dual-stack IPv4-IPv6 backbone
• Existing MPLS backbone leverage
These solutions are deployed on service providers' backbones when the amount of IPv6 traffic and the revenue
generated are in line with the necessary investments and the agreed-upon risks. Conditions are favorable for
the introduction of native IPv6 services, from the edge, in a scalable way, without any IPv6 addressing
restrictions and without putting a well-controlled IPv4 backbone in jeopardy. Backbone stability is essential
for service providers that have recently stabilized their IPv4 infrastructure.
Service providers running an MPLS/IPv4 infrastructure follow similar trends because several integration
scenarios that offer IPv6 services on an MPLS network are possible. Cisco Systems has specially developed
Cisco 6PE or IPv6 Provider Edge Router over MPLS, to meet all those requirements.
Inter-AS support for 6PE requires support of Border Gateway Protocol (BGP) to enable the address families
and to allocate and distribute PE and ASBR labels.
Note
Cisco IOS XR displays actual IPv4 next-hop addresses for IPv6 labeled-unicast and VPNv6 prefixes.
IPv4-mapped-to-IPv6 format is not supported.
Benefits of 6PE/VPE
Service providers who currently deploy MPLS experience these benefits of Cisco 6PE/VPE:
• Minimal operational cost and risk—No impact on existing IPv4 and MPLS services.
• Provider edge routers upgrade only—A 6PE/VPE router can be an existing PE router or a new one
• No impact on IPv6 customer edge routers—The ISP can connect to any customer CE running Static,
• Production services ready—An ISP can delegate IPv6 prefixes.
Cisco IOS XR Virtual Private Network Configuration Guide for the Cisco CRS Router, Release 6.1.x
132
reference guides include the task IDs required for each command.
If you suspect user group assignment is preventing you from using a command, contact your AAA
administrator for assistance.
dedicated to IPv6 traffic.
IGP or EGP.
Implementing IPv6 VPN Provider Edge Transport over MPLS
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