How to advertise IPV6 prefixs over IPV4 BGP Session

Paul Stewart paul at
Wed Jun 8 16:45:47 CEST 2011

We were faced with the same request a few days ago.... couldn't get it to
export the v6 prefixes over top of the our existing v4 export session (not
peering, just dumping tables to them which in turn are used by their boxes
to figure out what's on-net for us and not).

Are you saying just add family inet6 ? (JunOS)  This is a multihop eBGP
session in our case...


-----Original Message-----
From: at
[ at] On Behalf Of
John Payne
Sent: Wednesday, June 08, 2011 10:31 AM
To: Herlianto
Cc: ipv6-ops at
Subject: Re: How to advertise IPV6 prefixs over IPV4 BGP Session

On Jun 8, 2011, at 10:21 AM, Herlianto wrote:

> Dear All,
> I need your advice how to advertise iPV6 prefixs over IPV4 bgp Session.
> Just now, Akamai team ask to advertise IPV6 prefixs that will be used for
Woorld IPV6 day over Existing IPV4 BGP Session.

Just add the IPv6 unicast address family to that neighbor.  Don't forget
IPv6 specific route-maps or prefix-lists or whatever you use.
Ask your Akamai contact for examples, I'm sure they'd be happy to help.

Note that this BGP session isn't used for routing purposes.... you can think
of it as a convenient method of communicating an ACL :)=

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