The ORIGIN option on BGP - what is it for?
Peter Boothe
peter at cs.uoregon.edu
Fri Oct 21 05:34:35 UTC 2005
What makes you mark routes as ORIGIN: IGP vs ORIGIN: EGP?
I just checked out the latest routeviews snapshot to see what the origins
of various routes were set to. The command line
$ bzcat oix-full-snapshot-latest.dat.bz2 | sed -e 's/.* //' | sort \
| uniq -c | sort -nk1
Gave me a bunch of crap from overly-long lines, and then
9091 e
682087 ?
7560175 i
Which means that out of 8,251,353 routes in routeviews, only 9,091 are
marked as ORIGIN: EGP, while 682,087 are not configured as one or the
other, and the other *7.5 million* are marked ORIGIN: IGP.
So my question is: What do people use ORIGIN: EGP vs ORIGIN: IGP to
distinguish? What makes a route EGP vs. IGP to you?
-Peter
--
Peter Boothe
Graduate Student in Computer Science
Beyond BGP Project
University of Oregon
http://soy.dyndns.org/~peter
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