Cisco NCS 540 Series User Manual

to use a single process for all the VRFs. If needed, a second OSPFv3 process must be configured for IPv6
routing.
A maximum of four OSPFv3 processes are supported.
Note
OSPFv3 PE-CE Extensions
IPv6 protocol is being vastly deployed in today's customer networks. Service Providers (SPs) need to be able
to offer Virtual Private Network (VPN) services to their customers for supporting IPv6 protocol, in addition
to the already offered VPN services for IPv4 protocol.
In order to support IPv6, routing protocols require additional extensions for operating in the VPN environment.
Extensions to OSPFv3 are required in order for OSPFv3 to operate at the PE-CE links.
Configuring 6PE/VPE
Configuration Example
This example shows how to configure 6PE on PE routers to transport the IPv6 prefixes across the IPv4 cloud.
Ensure that you configure 6PE on PE routers participating in both the IPv4 cloud and IPv6 clouds.
For 6PE, you can use all routing protocols supported on Cisco IOS XR software such as BGP, OSPF, IS-IS,
and Static to learn routes from both clouds. However, for 6VPE, you can use only the BGP, and Static routing
protocols to learn routes. Also, 6VPE supports OSPFv3 routing protocol between PE and CE routers.
While configuring 6PE/VPE on NCS 540 Series Routers, it is mandatory to configure label allocation mode,
per-vrf or per-ce for all routers including peer routers.
Note
Route policies must be configured prior to configuring 6PE/VPE.
Note
Router#configure
Router(config)#router bgp 10
Router(config-bgp)#nsr
Router(config-bgp)#bgp router-id 11.11.11.11
Router(config-bgp)#graceful-restart
Router(config-bgp)#log neighbor changes detail
Router(config-bgp)#address-family ipv6 unicast
Router(config-bgp-af)#allocate-label all
Router(config-bgp-af)#commit
Router(config-bgp)#neighbor 66:1:2::2
Router(config-bgp-nbr)#remote-as 102
Router(config-bgp-nbr)#address-family ipv6 unicast
Router(config-bgp-nbr-af)#route-policy pass-all in
Router(config-bgp-nbr-af)#route-policy pass-all out
Router(config-bgp-nbr-af)#commit
Router(config-bgp)#neighbor 13.13.13.13
Router(config-bgp-nbr)#remote-as 10
L3VPN Configuration Guide for Cisco NCS 540 Series Routers, IOS XR Release 6.3.x
58
Implementing IPv6 VPN Provider Edge Transport over MPLS
Configuring 6PE/VPE

Cisco NCS 540 Series Specifications

General

Brand	Cisco
Model	NCS 540 Series
Category	Network Router
Language	English