[K12OSN] Problem with 5.0 and Cisco switch

[Wilson Chan]

For the Cisco Switch you can disable spanning-tree on the port. Be sure to only disable spanning-tree to ports connected to computers or you can create some nasty spanning-tree loops in your network.

HowTo:
Telnet to Cisco switch
enable
Config t
interface f0/1


----- Original Message -----
From: John Hansknecht <jhansknecht at hanstech.com>
To: listserv K12OSN <k12osn at redhat.com>
Sent: Tue, 19 Sep 2006 09:49:31 -1000
Subject: [K12OSN] Problem with 5.0 and Cisco switch


> Hi folks,
> 
> I am looking for possible solutions for an issue with K12LTSP 5.0 and our 
> Cisco switch. First off, please note that we had no problems with earlier 
> versions of K12LTSP and that the new server is working with all clients not 
> connected to our cisco switch (which is thankful 100+ of 115 clients.) But 
> these last clients won't work. The clients are PXE boot, they successfully 
> pull a dhcp address and start the PXE boot process. Then when the clients get 
> to the linux network setup they fail on the dhcp client process (I.E. they 
> don't get an address). It appears to me that the issue is that the Cisco 
> switch is very slow to negotiate speeds and by the time the negotiations are 
> complete the computer has already failed for lack of an IP address. So, I am 
> looking for an easy way to get past this issue. Possibilities would be:
> 
> 1) Is there a way to extend the time out that the linux client waits for the 
> dhcp server to grant an address.
> 
> 2) Is there a way to set the speed of the linux client, then I can also set 
> the speed on the cisco switch and eliminate the speed negotiation.
> 
> 3) Or, of course am I totally missing the boat here and does any one have 
> another idea on the source of the problem and a possible solution?
> 
> Peace,
> 
> John Hansknecht
> U of D Jesuit
> 
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