Overview of 6PE/6VPE
Feature Name |
Release |
Description |
---|---|---|
6PE/6VPE |
Release 24.4.1 |
Introduced in this release on: Fixed Systems (8700 [ASIC:K100])(select variants only*). The router now enable seamless integration of IPv6 networks over an MPLS backbone, allowing service providers to offer IPv6 services without changing the core MPLS infrastructure. Facilitates IPv6 routing by leveraging existing IPv4 MPLS paths, ensuring efficient and scalable network expansion. IPv6 prefixes are advertised as VPNv4 routes, which simplifies deployment and reduces operational complexity. This approach requires no IPv6 capabilities in the MPLS core, leading to cost savings and a smoother transition to IPv6. *Previously this feature was supported on Q200 and Q100. It is now extended to Cisco 8712-MOD-M routers. |
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
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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. |