Anyone else seeing "(invalid or corrupt AS path) 3 bytes E01100" ?

Kevin Oberman oberman at
Mon Aug 17 23:47:28 CDT 2009

> From: Brett Watson <brett at>
> Date: Mon, 17 Aug 2009 19:11:06 -0700
> On Aug 17, 2009, at 5:17 PM, Paul Ferguson wrote:
> > I recall Cisco code bugs that were fixed in semi- real-time, and  
> > quotes
> > from tli: "Code still warm from compiler. Confidence level: Boots in  
> > lab."
> IETF Dallas, 1995 I think. MCI Reston engg and Cisco (Ravi and others)  
> in the terminal room cutting a new image of IS-IS for us because we'd  
> tripped on the 24-day timer bug wherein all adjacencies would drop.  
> Loaded on production routers that evening to fix the problem... good  
> times :)

I remember back in 1993 or 1994 getting a note from Tony Li chastising
us for running BGP4 code that was over a WEEK old. How could we possibly
expect things to work with code that far out of date?

The amazing part is that BGP4 not only worked, but was very stable less
then a month later when NSFnet shut down an se had to go to BGP4 to peer
with everyone (like MCI, Sprint, NASA, and UUnet).

Yep, it booted in the lab, all right.
R. Kevin Oberman, Network Engineer
Energy Sciences Network (ESnet)
Ernest O. Lawrence Berkeley National Laboratory (Berkeley Lab)
E-mail: oberman at			Phone: +1 510 486-8634
Key fingerprint:059B 2DDF 031C 9BA3 14A4  EADA 927D EBB3 987B 3751

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