The Cidr Report
randy at psg.com
Mon Dec 2 01:44:00 UTC 1996
> There is no "absolute" point at which to take these measurements. Any
> point will be coloured (colored) by its relative Internet location with
> respect to amounts of local detail and aggregated distant detail.
Yes. Dave Meyer is trying to overcome this with his new route viewer
(route-views.uoregon.edu), analogous to Pushpendra's. He is getting
multi-hop BGP from Europe (thanks RIPE), Japan (thanks IIJ), and MAE-West
(no, LA would probably not be an interesting addition:-) to get widely
disparate and hence interesting views of the infrastructure.
It would be prettier if he could
ip as-path access-list 142 permit ^NAS_
route-map peerN-in permit 1
match as-path 142
sed-path s/^NAS_// ! or maybe
set as-path un-prepend NAS
neighbor 42.666.7.11 remote-as NAS
neighbor 42.666.7.11 route-map peerN-in in
to clean the first AS off the path, as it looks tacky. But I suspect
cisco would fear the impact of such a knob on their support folk.
I do not think this approach would be overly useful for Tony's CIDR
report. It is not a debugging tool, but an overall trend chart. The
constant measurement point and relative measure is what I find useful.
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