From: Andrew Lennon (andrew.lennon@xxxxxxxxxxxxx)
Date: Thu May 03 2001 - 19:47:18 GMT-3
I would hope that company IT processes would stop anyone making such a
plonker of themselves, but then again....
Seriously there was a thread a few weeks ago that covered the sync/no sync
issue quite well. In short:
Learn what your IGP's can and can't do!
Andy
-----Original Message-----
From: nobody@groupstudy.com [mailto:nobody@groupstudy.com]On Behalf Of
Ken Yeo
Sent: 03 May 2001 22:46
To: Brian Dennis; ccielab@groupstudy.com
Subject: Re: BGP and no-sync
Hi Brian,
Very agree!
Ken
----- Original Message -----
From: "Brian Dennis" <brian@5g.net>
To: <ccielab@groupstudy.com>
Sent: Thursday, May 03, 2001 2:52 PM
Subject: RE: BGP and no-sync
> You redistribute a full Internet routing table without any filtering into
> your IGP and right after you type the redistribute command you'll say "hey
> what happened to my router?". Then a couple minutes later you'll be saying
> "hey what happened to my job?" 8)
>
> But if you're working in a lab environment I say redistribute away!
>
>
> Brian Dennis, CCIE #2210 (R&S)(ISP/Dial) CCSI #98640
> 5G Networks, Inc.
> brian@5g.net
> (925) 260-2724
>
> > -----Original Message-----
> > From: nobody@groupstudy.com [mailto:nobody@groupstudy.com]On Behalf Of
> > Ken Yeo
> > Sent: Thursday, May 03, 2001 11:19 AM
> > To: mcaplan.cs@clearstream.com; ccielab@groupstudy.com
> > Subject: Re: BGP and no-sync
> >
> >
> > Hi Mark,
> >
> > Or use:
> >
> > router ospf 1
> > redistribute bgp subnet
> >
> > ----- Original Message -----
> > From: <mcaplan.cs@clearstream.com>
> > To: <ccielab@groupstudy.com>
> > Sent: Thursday, May 03, 2001 12:38 PM
> > Subject: BGP and no-sync
> >
> >
> > > Hi,
> > >
> > > I have a question regarding the effects of no-sync on BGP.
> > >
> > > The rule for synch, as far as I know is that an IBGP peer will not
> > advertise
> > > a BGP route to another peer (IBGP or EBGP) if that route does
> > not exist in
> > > the IGP.
> > >
> > > From my observations, a corollary to that is that a BGP peer will not
> > > install learnt BGP routes into the routing table if sync is turned on
> > > (assuming no redistribution). This is shown by comparing 'sh ip
> > bgp' with
> > > 'sh ip route'; if sync is on, then routes will be visible in the BGP
> > routing
> > > table, but will not be in the IP routing table. To get these BGP
routes
> > into
> > > the IP routing table, one has to simply do a 'no sync'.
> > >
> > > I'm just thinking aloud here, but I would appreciate some
> > confirmation of
> > my
> > > logic.
> > >
> > > Thanks
> > >
> > > Mark
> > >
> > >
> > > Visit us at http://www.clearstream.com
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