🚀 go-pugleaf

Hank -

From your message I am unable to ascertain if you have a cisco problem or
not.  LAT is notoriously delay sensitive; its timers may be expiring before
the cisco spanning tree timers are kicking in.  After your connection
breaks, are you able to re-establish a connection?  If so, this would
indicate either a super-sensitive LAT, a slow cisco, or something else.  It
would be helpful if you experimented a bit more along these lines and
communicated your results to the "customer-service@cisco.com" mailing list.
It would help if you included configurations and information on the
bandwidth of the serial lines.

As for the IEEE spanning tree protocol, yes, 8.1(14) has some problems in
that regard.  There is the serial line crash you discovered, as well
incorrect multicast addresses.  These problems have been resolved in the
current field release, 8.1(19).

Kirk Lougheed
cisco