randy@ncifcrf.UUCP (The Computer Grue) (04/09/87)
I am running a Sun network (all Sun 3's, OS 3.2, thinwire
ethernet) which gateways through to the main ethernet at our site.
My problem is that the non-gateway suns (call them 'clients')
occasionally drop all information about the main network from their
routing tables (sometimes they 'remember' networks connected to the
main cable but forget about the main network; sometimes they forget
about everything but the loopback interface and the sun ethernet).
This results in user's not being able to telnet or rlogin to any
machine not on the main ethernet. A 'netstat -r' on the client
machines fail to show any sign of the main network at all; the same
command on the gateway shows everything as it should be. Killing
and restarting the routed demon ('/etc/in.routed') on the client
machine fixes the problem.
My understanding of the operation of routed is that the gateway
routed demon should be regularly (every 60 seconds) sending out
routing information packets as to what services it can preform for
everyone else. For that reason I would think that (even if the NSA
reached in and erased part of our routing tables :-}) the client
routing tables would be back to normal after a problem within 60
seconds. This does not seem to be happening. Does anyone have any
ideas as to what is actually going on? Or, failing that, some
suggestion as to what I might do to further diagnose the problem?
Much thanks . . .
-- Randy Smith
--
Randy Smith @ NCI Supercomputer Facility
c/o PRI, Inc.
PO Box B, Bldng. 430 Phone: (301) 698-5660
Frederick, MD 21701 Uucp: ...!seismo!elsie!ncifcrf!randy