is it me or is there a typo in draft-ietf-idr-route-oscillation-00.txt?
bottom of Page5:
1) Ra has the following installed in its BGP table with
the path learned via AS2 marked best:
NEXT_HOP
AS_PATH MED IGP Cost
-----------------------
6 100 1 4
* 10 100 10 5
shouldn't that read AS10 rather than AS2?
Andy
----- Original Message -----
From: "Howard C. Berkowitz"
To:
Sent: Wednesday, May 23, 2001 10:16 PM
Subject: Re: could a bgp reflector also be a client? [7:5528]
> As Andy says, hierarchical route reflection is perfectly reasonable
> and used operationally, but needs to be approached with caution. The
> most basic configuration issue, of course, is that the different
> levels of clusters mst have cluster IDs.
>
> You definitely want to look at the most current route reflector RFC,
> http://www.ietf.org/rfc/rfc2796.txt which discusses some loop
> prevention issues -- there are nuances about, for example,
> intra-cluster to inter-cluster IGP metrics.
>
>
> >you can do for sure, but I'd approach it with caution - your "root"
> >route-reflectors, if you see what I mean, are going to get pretty heavily
> >loaded if there is significant transience out there.
> >
> >Remember that R-Rs nedd to accept updates from all clients, and flood
them
> >out to all other neighbors (client or not). Imagine what would happen if
> >you have a two-layer hierarchy of RRs, whereby the clients at the bottom
> >pass on their updates to the mid-layer RRs, which in turn will pass on
the
> >updates to the top-layer RRs, which have to flood out the updates....
> >
> >Another possibility would be that route flaps might become amplified - ie
> >generate multiple withdraw/announce pairs which would propagate through
the
> >network, impacting any flap-damping that may be inplemented.
>
>
http://www.ietf.org/internet-drafts/draft-ietf-idr-route-oscillation-00.txt
>
> >
> >What is normally done is to have a fully (iBGP - not neccesarily
physical)
> >meshed backbone, with a pair of RRs at each major location, with them
> >feeding local RR clients from there.
> >
> >hth
> >
> >Andy
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