[rbak-nsp] mBGP / non 6PE / mapped v4 address next-hop

[Florian Lohoff]

On Fri, Jun 22, 2012 at 04:14:26PM +0200, Olivier Benghozi wrote:
> Hi,
> 
> you wrote:
> > i fail to see how to configure an SE600 with mBGP announcing local routes
> > (pools) without them resulting in a 6PE announcement - read: ipv4 mapped
> > address next-hop.
> 
> >  peer-group IBGP internal
> >    password encrypted <deleted>
> >    update-source LOOPBACK0
> >   address-family ipv4 unicast
> >   address-family ipv6 unicast
> 
> 
> You are trying to announce pure IPv6 routes within an IPv4 BGP session, which is not what you want, I guess :)
> You want 6PE, so you want to exchange labeled IPv6 routes.

Our iBGP is pure IPv4 although it carrys all prefixes - BGP transport should be seperate from the userplane transport.

> On the SE, you must add "send label" under "address-family ipv6 unicast" at the peer-group level.

I DONT want to do 6PE - so why would i want to create labels?

> > The neighbor ASR9k sees the route as:
> 
> On the Cisco IOSXR, you must use "address-family ipv6 labeled-unicast" for
> the neighbor/peergroup, and "address-family ipv6 unicast" with
> "allocate-label all" under in the BGP router global level.

I DONT want 6PE - Our core is dual stacked so i'd do everything native. 

Flo
-- 
Florian Lohoff                                                 f at zz.de
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