Mae-East instability

Thu Jul 20 21:03:11 UTC 1995

> Date: Thu, 20 Jul 1995 14:26:48 -0400
> From: Curtis Villamizar <curtis at ans.net>
> 
> The July 18 problem was mostly concentrated over one 3.5 hour period
> of continuous flap.
> 
>   Jul 18 07:19:28 to Jul 18 10:52:30 (122:47 / 213:02)
>     192.41.177.125 took  50 hits (57:00)
>     192.41.177.252 took  41 hits (62:31)
>     192.41.177.251 took  17 hits (34:19)
> 
> Any clues from NASA and ESNET as to why this instability occurred at
> Mae-east?  Was this some form of BGP meltdown or just hardware trouble
> at or getting to the Mae?

On the morning of July 18 there was a hardware failure at MAE-East
that kept breaking off the BGP sessions every 2-5 minutes. This took
place from about 4:00 until about 8:30 am. The report we recieved back
from SURAnet was that MFS ended up simply power cycling the Netedge
boxes.

Sessions with all peers except ICM and one of the PSI routers were
bouncing.

R. Kevin Oberman
Energy Sciences Network (ESnet)
National Energy Research Supercomputer Center (NERSC)
Lawrence Livermore National Laboratory (LLNL)
EMAIL: koberman at llnl.gov      Phone: +1 510 422-6955