Mae-East instability

Date: Thu, 20 Jul 1995 14:26:48 -0400
From: Curtis Villamizar <>

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) took 50 hits (57:00) took 41 hits (62:31) 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

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

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