[K12OSN] Problem with 5.0 and Cisco switch

[Wilson Chan]

Whoops...Hit the wrong key! Continued below:

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   <--whatever your interface #..If you dont know do a "show run"
  spanning-tree portfast   <--Disables spanning-tree on port so port comes up right
  
  interface f0/2
  ..
  interface f0/3
  ..
wr mem

So, do this to each interface connecting to a computer and see if it helps.



Wilson


> ----- 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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> > K12OSN at redhat.com
> > https://www.redhat.com/mailman/listinfo/k12osn
> > For more info see <http://www.k12os.org>
> > 
>