IPv6 over MPLS 6PE/6VPE

This topic is to discuss the following lesson:

Continuing the discussion from IPv6 over MPLS 6PE/6VPE:

hello sir I want to run this tutorial on GNS3, what type of IOS cisco is suitable for ipv6-over-mpls-6pe-6vpe configuration?


what is the send label command do? is it allowing the PE routers to add the transport label and the VPN label to IPv6 prefixes and then forward to other PE routers?

Hello Tuong

The neighbor send-label command is used to enable a router to distribute MPLS labels along with IPv4 routes to a peer router. When using IPv6 the command can be used in address family configuration mode, to bind and advertise IPv6 prefix MPLS labels.

For more information, you can take a look at the following link:

I hope this has been helpful!


Hi Guys - quick question - is dual stack in terms of IPv6 simply running v4 and v6 addresses on the same interfaces? Cheers - Gareth.

Hello Gareth

The term “dual stack” can mean several things depending on the context. In general, the term means that a single device is running both IPv4 and IPv6 simultaneously. On a host with one NIC, this means that the NIC has both an IPv4 and IPv6 address. On a router, this could mean that a single port has both an IPv4 and IPv6 address, or, as is the case in this specific lesson, it simply means that the same device is running both IPv4 and IPv6 simultaneously, but not necessarily on the same interface.

I hope this has been helpful!


Thanks Laz - good to know that it’s just a generic term.

1 Like