[c-nsp] BGP ipv6 peers with ipv4 router-ids

Gert Doering gert at greenie.muc.de
Thu May 27 14:52:14 EDT 2010


Hi,

On Wed, May 26, 2010 at 12:50:33PM -0700, Christian MacNevin wrote:
> Address-family ipv6
> Neighbor 1.2.3.4 activate

We tend to "not do that for the production network".

One of the reasons: v4 and v6 give protocol resiliency - if the v4 routing 
is hosed, for whatever reason, I can use v6 to talk to the routers and fix 
v4.  If v6 depends on v4, it will be hosed at the same time...

Other reason: "people do not look to v4 BGP to find v6 things".

Third reason: if you use next-hop-self on these sessions, weird things
will happen :-)

gert

-- 
USENET is *not* the non-clickable part of WWW!
                                                           //www.muc.de/~gert/
Gert Doering - Munich, Germany                             gert at greenie.muc.de
fax: +49-89-35655025                        gert at net.informatik.tu-muenchen.de
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