16 Mar
2012
16 Mar
'12
1:10 p.m.
I have yet to find anything that is doing core BGP peering that is not CIDR capable. The
main reason for not doing anything less than a /24 is lack of memory and not filling up
the route table with a zillion prefixes. Sprint started this in the early days. I find
that few if any peers enforce this of late as you can see a bunch of prefixes that are
less than a /24 being announced. Check out routeviews.org to see.
That being said, in order to be good neighbors out there and follow conventions, we should
not be announcing anything less than a /24.
Tim
On Mar 16, 2012, at 10:36 AM, Bjorn Pehrson wrote:
(Please trim inclusions from previous messages)
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OK, fine, at this stage everything should be possible. I have found it hard to get
general peering agreements for anything less than /24 though. One reason seems to be that
there is still equipment out there that is not CIDR-capable.