On 8/09/2007, at 3:45 PM, Leo Bicknell wrote:
In a message written on Fri, Sep 07, 2007 at 07:14:01PM -0400, Jon
Lewis wrote:
For some reason, today I started out with fewer routes
(228289...yesterday,
I started with 230686) with no filtering.
RIR filter section Reduction in routes
APNIC 16690
ARIN 41070
RIPE 16981
LANIC 4468
AFRINIC 1516
-----------------------------
TOTAL 80725
The end result of applying all the RIR minimum allocation filters was
147564 BGP routes. I haven't checked to make sure there was no
loss in
reachability...this is just an idle 7206/NPE225 with nothing but its
ethernet uplink.
The CIDR report states that we have 235647 routes that could be
aggregated to 154503 routes. While not the same metric, I'd be
surprised at 147,564 routes if you did not have reachability issues.
The difference is roughly 3% of the total prefixes. ((154503-147564)/
235647*100)
It wouldn't be hard to run some form of netflow, and gauge the amount
of traffic to those prefixes. If it's as insignificant as the number
of prefixes, get/use a 0/0 route.
--
Nathan Ward
