From: Raminder Sarna (raminder_sarna@yahoo.com)
Date: Wed May 05 2004 - 03:31:40 GMT-3
Hi all,
could anyone please throw some light on the following
points:
Background: We have a Cisco 3550-48 switch connected
to a Netscreen Firewall on a port using 802.1Q trunk
encapsulation, we encounter periods of instability in
production where the netscreen stops responding, when
this happens the command show interface counters
errors on the 3550 displays packet counter increments
in the Xmit-error field.
a) what does Xmit-err mean ??
b) we do have on going undersized packets on the same
port all the time (as reported by the 3550), this does
not change during the instability periods when the
show interface counters errors seems to go up.
c) the show interface counters trunk reports no errors
in encapsulation, so im convinced this is not an error
caused by an undersized packet being encapsulated with
802.1Q parameters and being thrown at the netscreen
d) the netscreen reports packet drops during the
instability periods.
e) the number of packets reported as Xmit errors is
only 10 % of the undersized packets during the
instability period.... why would this stop the
netscreen from responding at all ??
Anyone Please advise
regards
Raminder
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