From: Becky Qiang (becky.qiang@wincomsystems.com)
Date: Fri Sep 13 2002 - 14:34:09 GMT-3
Peng,
Your memory is correct. A example that has not all the confed peers
specified can be found in 'Cisco BGP-4 Command and Configuration Handbook',
page 72.
This means that all the sub-ASs in the confederation do not to be fully
meshed.
Becky
----- Original Message -----
From: "Peng Zheng" <zpnist@yahoo.com>
To: "Omer Ansari" <omer@ansari.com>
Cc: "Lim Meng Toon" <limmti@yahoo.com.sg>; "Peng Zheng" <zpnist@yahoo.com>;
<ccielab@groupstudy.com>
Sent: Thursday, September 12, 2002 8:47 PM
Subject: Re: bgp confederation peer
> But I do remember I saw some example without sub-ASs
> not directly connected.
>
> In DOC CD, it's really not clear because all sub-ASs
> are fully mesh.
>
> --- Omer Ansari <omer@ansari.com> wrote:
> > OK, so the example shows RTC has a neighbor command
> > with a
> > router in AS70. [didnt notice in haste]
> >
> > however, i still stand by my hypothesis.
> >
> >
> > On Fri, 13 Sep 2002, Omer Ansari wrote:
> >
> > > I beg to differ.
> > >
> > > if you dont have all the sub-ASes in the bgp
> > confederation peers, how
> > > would you know if the routes coming via an AS are
> > from outside or from
> > > within the confederation?
> > >
> > > i think you have to have all the sub-ASes listed
> > in the bgp confed peers
> > > (even if they are not adjoint)
> > >
> > > see bgp case study:
> > > http://www.cisco.com/warp/public/459/16.html#A23.0
> > >
> > > RtC is not directly connected to AS70 but still
> > has as70 in the bgp confed
> > > peers statement, for routes coming from/via as70,
> > how would rtc know if
> > > its from within the confederation or outside, if
> > it doesnt know who all is
> > > in in the confederation?
> > >
> > > regards,
> > > Omer
> > >
> > >
> > > On Fri, 13 Sep 2002, [iso-8859-1] Lim Meng Toon
> > wrote:
> > >
> > > > 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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