How to advertise IPV6 prefixs over IPV4 BGP Session

Jack Bates jbates at
Wed Jun 8 22:03:24 CEST 2011

On 6/8/2011 9:30 AM, John Payne wrote:
> 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 :)


Oh, how my world was horrible when my IOS version didn't bother to 
deactivate IPv4 when setting up an IPv6 neighbor. Now I make sure to 
issue the no activate command first in the opposite address family just 
to be careful. One more reason I prefer J's configuration model.


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