[c-nsp] clear bgp ipv6 unicast A.B.C.D.

[Gert Doering]

Hi,

On Thu, Nov 28, 2013 at 01:34:49PM +0100, Antonio Prado wrote:
> -----BEGIN PGP SIGNED MESSAGE-----
> On 28/11/13 12:56, Gert Doering wrote:
> > Your router only has a single session, but uses this to transport
> > both address family.  (I'd not do it that way, but it can be
> > done).
> 
> yes per RFC 2283.
> yes, of course one tcp connection.

So how would you clear only half of the TCP session?

> >> Is there any reason for the router to clear both sessions if I
> >> only issue "clear bgp ipv6 unicast A.B.C.D" ?
> > Yes.  There is no separate IPv6 session.
> 
> that could be useful to keep logically separate sessions over a single
> connection.

Well, "clear" clears the TCP session, so there's no way to do only
"logical sessions" (which BGP doesn't do anyway) here.

You can, of course, do a "soft clear", which will do exactly that - 
withdraw and re-announce all prefixes ("clear bgp ... soft").  I have
to admit I'm not sure what it will do if you have multiple AFIs on
one session - whether it will soft-clear all AFIs or just IPv6 then.

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
-------------- next part --------------
A non-text attachment was scrubbed...
Name: not available
Type: application/pgp-signature
Size: 305 bytes
Desc: not available
URL: <https://puck.nether.net/pipermail/cisco-nsp/attachments/20131128/9a1b3df7/attachment-0001.sig>