[clug-talk] OT: Network Tester
linux at glazer.ca
Fri Sep 7 08:23:13 PDT 2007
I'm going to try and run mtr for a while and see what that comes up with.
this is not a complicated network - about 35 devices connected to a new
48 port managed switch with another small switch connecting 5 devices
upstairs, central Linux server and linux firewall to DSL connection. The
issues are not related to external communications, all internal.
Primary traffic on the switch is UDP and when I do netstat -su on the
Linux server, this is what I get:
qbx-dump # netstat -su
9684190 packets received
38037 packets to unknown port received.
130595 packet receive errors
9191528 packets sent
The packet receive errors and the packets to unknown ports are the ones
that concern me - doing research on the 'net points to network errors,
so back to my original thought - that it is a network error but how do I
track it down?
Tom Weniger wrote:
> Greetings Martin,
> I agree with Shawn that the problem requires some grunt work. Start
> off with a visual inspection of the network. Who knows if the
> installer stapled the cat5 cable somewhere or if it was punctured by a
> ceiling tile stringer?
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