[BC] IP Weirdness

[Jason R.]

Well, see that's where all this started.... ONE machine - and NOT the .0.75 
machine - was exhibiting this creepy on and off stuff. One year old big huge 
honking ASUS.  Wouldn't have thought it was a NIC card, but, moved the cable 
over to the spare and brought it up... and the problem stopped, for a week 
or so.

   Then it came back... on all the machines...
And the ping command works fine for all addresses execpt the one with the 
.0.75 address.

Jason
----- Original Message ----- 
From: "Mark W. Croom" <markc at kjly.com>
To: "Broadcasters' Mailing List" <broadcast at radiolists.net>
Sent: Tuesday, May 27, 2008 10:02 AM
Subject: Re: [BC] IP Weirdness


> I've got a machine that's doing the same thing, but it's not mission 
> critical
> so I turned it off until I can get back to that station. I'm thinking it's
> going to be the LAN card because internet access would slow to a crawl 
> while
> the DHCP server in the router was busy dealing with this machine that was
> popping on and off the net. No other machines were showing the connection
> problem, but their internet access got really spotty while this was going 
> on.
> Once I shut the thing off operation returned to normal on all the other 
> boxes.
>
> The idea of turning off the NoIP machine is a good idea if you can. One 
> night
> with it off would tell you a lot, I suspect.
>
> It is not out of the question that the power supply might be getting bad 
> on
> the switch, or some other switch issue is happening. More likely there is 
> a
> single LAN interface card on one of the machines (maybe even one port of 
> the
> router) that is bringing the whole thing to its knees.
>
> Good luck.
>
> Mark
> MN
>
>
> ---------- Original Message -----------
> From: "Jason R." <jyrussell at academicplanet.com>
> To: "\(BC\) Bdct Mailing List" <broadcast at radiolists.net>
> Sent: Mon, 26 May 2008 10:15:09 -0500
> Subject: [BC] IP Weirdness
>
>> Here's an IP oddity I saw for the first time  -
>>
>> (sorry for the length, but I'm trying to accurately describe the
>> problem).
>>
>>   Have you ever seen a machine try to ping a different address than
>> what you put in...?
>>
>>    I have four XP Pro machines tied together with TCP/IP - UDP
>> across a small 8 port Linksys Gig ready switch/router. As far as I
>> know, that router doesn't do DHCP or assign addresses at all, it
>> might as well be strictly a fast fat switch.
>>
>>    Internet service is provided by a jumper to a Belkin DHCP router,
>> so there are 5 ports tied up on the Linksys(Cisco) switch.   Only
>> one on the internet router. The internet service is Cable, with our
>> node fixed, so I don't know much other way to do it.
>>
>>    For whatever reason, the network connection to some of the
>> machines has become extremely erratic, inlhouse, on our side..  The
>> network connectivity popup in the bottom corner of the screen has
>> started going on and off every few seconds... "A network cable is
>> unplugged" -  then about 10 seconds later "Local Area Connection
>> 1GbPs  Status Connected" - On, off, On, Offf...
>>
>>    It had started on one machine.   I went to a spare network card.
>> It went fine for about a week, now the problems back, but on more
>> than one machine.
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