From: Peng Zheng (zpnist@yahoo.com)
Date: Fri Sep 13 2002 - 00:09:01 GMT-3
I'm wondering becasue in CIM BGP, they specify all
sub-ASs.
--- Becky Qiang <becky.qiang@wincomsystems.com> wrote:
> Hi Peng:
>
> I gave it a second thought and sort of figured out
> what you were trying to
> do. I don't think it is possible to do peer with a
> non directly connected
> BGP neighbor that belongs to another sub-AS within
> the same confederation.
> Because in EBGP, you need the 'ebgp-multihop' clause
> in order to establish a
> EBGP session with a non-directly connected neighbor.
> And I do not see an
> equivelent 'ebgp-multihop' command for
> confederation. Maybe just try the
> same clause and see what happens?
>
> Becky
>
>
> ----- Original Message -----
> From: "Becky Qiang" <becky.qiang@wincomsystems.com>
> To: "Peng Zheng" <zpnist@yahoo.com>;
> <ccielab@groupstudy.com>
> Sent: Thursday, September 12, 2002 6:55 PM
> Subject: Re: bgp confederation peer
>
>
> > Hi Peng:
> >
> > I don't think I understand what your question was.
> >
> > There are two commands associated with the BGP
> confederation:
> > 1) bgp confederation identifier <AS#>
> > 2) bgp confederation peers <sub-AS#1,
> sub-AS#2...sub-AS#n>
> >
> > If I do BGP confederation, I divide my AS in to
> multiple sub-ASs. And each
> > sub-AS is treated like an individual system, and I
> configure them just
> like
> > how I configure IBGP(if within the same sub-AS),
> or EBP(if within
> different
> > sub-AS). The only one more thing I need to do on
> the router is to assign a
> > real AS number on it.
> >
> > Maybe you are asking should you specify a
> neighbor's IP address which
> > belongs to the same AS#, but a different sub-AS#?
> I don't think it's a
> > normal practice. Just like in EBGP, neighbors are
> usually required to be
> > directly connected.
> >
> > Becky
> >
> > ----- Original Message -----
> > From: "Lim Meng Toon" <limmti@yahoo.com.sg>
> > To: "Peng Zheng" <zpnist@yahoo.com>;
> <ccielab@groupstudy.com>
> > Sent: Thursday, September 12, 2002 6:08 PM
> > Subject: Re: bgp confederation peer
> >
> >
> > > Hi,
> > >
> > > Usually you only need to peer to those routers
> within
> > > the confederation as required and not to every
> peers.
> > >
> > > Thanks
> > >
> > > --- Peng Zheng <zpnist@yahoo.com> wrote: > Hi,
> > > >
> > > > Should I only specify AS peers which are
> directly
> > > > connected with local router or Specify all ASs
> that
> > > > belong to the confederation?
> > > >
> > > > IN CIM BGP, they specify all ASs. But I
> remember I
> > > > saw some examples only specify ASs directly
> > > > connected.
> > > >
> > > >
> > > > Which one should be used?
> > > >
> > > > Thank you for help.
> > > >
> > > > Best Wishes,
> > > > Peng Zheng
> > > >
> > > >
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