KLOGGED MILNET BRIDGES


C. Philip Wood (cpw%sneezy@LANL.GOV)
Wed, 21 Dec 88 09:18:39 MST


LANL cannot establish communication with ARPANET hosts through the
various "Mail Bridges". DCA can reset our IMP, connections can be
established, mail flows... Then, some hours, later the pipes are
klogged again. It happens gradually. This has been going on since the
switch to the new PSN 7.0 IMP software. Are we the only MILNET host
that is having this problem? ITS NOT EGP! Are there any hotshots out
there that know how and where to look for what's wrong? Is this a know
problem that someone is working on? Just what were the changes to the
IMP's, what was the purpose?

Are there some tools available to us (to run on 43BSD VAX) to psych this
problem out. God I hope I haven't taken too long to compose this.

What follows is a summary of our implog for the time period:

        Dec 20 11:08:39 1988 to Dec 21 06:43:29 1988

The total time covered is about 4 hours less than that due to killing and
restarting the log daemon. Let's say a 16 hour period.

Number of entries in the log: 25,677

19220 incomplete: htype=0, source=0/103, link=ip, no resources within 15 seconds
 2517 incomplete: htype=0, source=0/106, link=ip, no resources within 15 seconds
 1456 incomplete: htype=0, source=6/103, link=ip, no resources within 15 seconds
  871 incomplete: htype=0, source=21/104, link=ip, no resources within 15 seconds
  791 incomplete: htype=0, source=3/41, link=ip, no resources within 15 seconds
  153 incomplete: htype=0, source=20/17, link=ip, no resources within 15 seconds
  145 incomplete: htype=0, source=1/3, link=ip, no resources within 15 seconds
   93 incomplete: htype=0, source=3/75, link=ip, no resources within 15 seconds
   87 incomplete: htype=0, source=1/40, link=ip, no resources within 15 seconds
   58 incomplete: htype=0, source=3/66, link=ip, host didn't take data fast enough
   34 incomplete: htype=0, source=1/60, link=ip, no resources within 15 seconds
   30 host 1/90 unreachable: destination host isn't up
   30 host 1/90 dead: down for emergency reset, subtype=e1
   29 incomplete: htype=0, source=1/102, link=ip, no resources within 15 seconds
   19 host 0/74 unreachable: destination host isn't up
   19 host 0/74 dead: down for emergency reset, subtype=e1
   17 incomplete: htype=0, source=0/26, link=ip, no resources within 15 seconds
    8 incomplete: htype=0, source=3/75, link=ip, host didn't take data fast enough
    8 incomplete: htype=0, source=21/104, link=ip, host didn't take data fast enough
    8 incomplete: htype=0, source=20/17, link=ip, host didn't take data fast enough
    8 incomplete: htype=0, source=1/40, link=ip, host didn't take data fast enough
    8 incomplete: htype=0, source=1/102, link=ip, host didn't take data fast enough
    8 incomplete: htype=0, source=0/74, link=ip, host didn't take data fast enough
    8 incomplete: htype=0, source=0/26, link=ip, host didn't take data fast enough
    8 incomplete: htype=0, source=0/106, link=ip, host didn't take data fast enough
    8 incomplete: htype=0, source=0/103, link=ip, host didn't take data fast enough
    5 incomplete: htype=0, source=1/90, link=ip, imp/circuit failure
    4 incomplete: htype=0, source=9/65, link=ip, host didn't take data fast enough
    4 host 3/41 unreachable: destination host isn't up
    4 host 3/41 dead: down for emergency reset, subtype=e1
    4 host 3/21 unreachable: destination host isn't up
    4 host 3/21 dead: down for emergency reset, subtype=e1
    2 incomplete: htype=0, source=3/66, link=ip, imp/circuit failure
    1 restarted: Tue Dec 20 15:02:22 1988
    1 incomplete: htype=0, source=3/75, link=ip, imp/circuit failure
    1 incomplete: htype=0, source=11/55, link=ip, host didn't take data fast enough
    1 incomplete: htype=0, source=1/65, link=ip, imp/circuit failure
    1 incomplete: htype=0, source=0/74, link=ip, imp/circuit failure
    1 host 6/128 unreachable: communication is prohibited
    1 host 1/48 unreachable: destination host isn't up
    1 host 1/48 dead: down for emergency reset, subtype=e1
    1 host 0/58 unreachable: destination imp can't be reached

Phil Wood, cpw@lanl.gov



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