Re: [MAGNet] network problems?

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From: ken lindahl (lindahl_at_uclink.berkeley.edu)
Date: Mon Aug 25 2003 - 17:11:14 PDT

well, it sounds like you're experiencing a network problem. the best
thing to do is call the IST trouble desk (2-4920) and open a network
trouble ticket.

ken

At 03:06 PM 8/25/2003, Eric Saxby wrote:

>Hi Lucas,
>
>I did a tcp dump from one of the effected computers. I didn't see anything particularly odd while the network was working. A lot of traffic came through from addresses elsewhere on campus, calling for 239.255.255.253.svrloc: udp 49. From a google search, that seemed like something pretty normal to see.
>
>When the network went down, a tcpdump picked up less than 50 packets
>
>tcpdump: listening on en0
>^C
>47 packets received by filter
>0 packets dropped by kernel
>
>the dumpfile was then one line, with only a time stamp. There wasn't even a dns name or ip address associated with the packet.
>
>I'd initially assumed that this was a welcome week issue, but I just want to double check to make sure it's not something more complicated.
>I'll try more tracerouting in a bit, since my first few didn't pick up anything out of the ordinary (when the net went down it couldn't even get to the first switch, of course).
>
>Thanks for the responses!
>
>Eric
>
>
>On Monday, August 25, 2003, at 12:49 PM, Lucas Rockwell wrote:
>
>>When traffic on the network seems to slow down or even stop, use tcpdump
>>if you have an OS X machine.
>
>--
>
>Eric Saxby Berkeley Art Museum/Pacific Film Archive
>Computer Resource Specialist Digital Media Department
>esaxby_at_uclink.berkeley.edu 510-642-9623
>
>
>
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