Mae-East instability

Thu Jul 20 18:26:48 UTC 1995

Some of our peers have been dropping BGP a bit more often lately.
Somebody had a real bad day on Tuesday.

    Jul.18:     192.41.177.252     1:35:13     mae-east-rt2.es.net
    Jul.18:     192.41.177.125     1:23:29     mae-east.nsn.nasa.gov
    Jul.18:     192.41.177.251     0:59:05     mae-east-rt1.es.net
    Jul.18:     192.41.177.241     0:08:56     sl-mae-e-F0/0.sprintlink.net

Here's a list giving the number of disconnects (where there were
5 or more disonnects per day).  The majority of flapping seems to be
at Mae-East and Mae-West.

	date		peer	hits

      Jul 18    192.157.69.250    8     rs1.sprint.ra.net	    NY NAP
      Jul 18    192.41.177.125   72     mae-east.nsn.nasa.gov	    MaeE
      Jul 18    192.41.177.251   34     mae-east-rt1.es.net	    MaeE
      Jul 18    192.41.177.252   56     mae-east-rt2.es.net	    MaeE

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?

Curtis