Issue with Aquiring DHCP

[Brian Long]

Does your switch have spanning tree port-fast enabled?  This tells the
switch to disable spanning tree calculations for that port.  If not
configured and spanning tree is enabled on your network, the time it
takes your link to come up could be 30+ seconds and that's too long for
"loader" to acquire an IP.

/Brian/

On Mon, 2004-06-07 at 12:12, Andy Ciordia wrote:
> Ethernet Card:
> eth0: Tigon3 [partno(BCM95703A30) rev 1002 PHY(5703)] 
> (PCIX:133MHz:64-bit) 10/100/1000BaseT
> 
> Problem: Installing from PXE fails to aquire DHCP address as Kickstart 
> begins.
> 
> Summary:
> PXE-Booting aquires DHCP w/ MAC matching
> Kernel is passed over and Boots
> Kickstart engages and knows to boot over HTTP, its first job is to 
> aquire its address through DHCP.  The first broadcast is never handled 
> and times out, thus causing a stop point for the user asking methodology 
> for aquiring an address.
> When you select OK to try DHCP again, it aquires, and the installation 
> continues as it should.
> 
> I've seen this problem reported before, but never really seen an 
> applicable solution.  In the DHCP logs I see a broadcast coming over the 
> lines but I don't know why its not getting a response at this time and 
> why it gets it on the second trial.  The Console logs:
> 
> 	Sending DHCP request through device eth0
> 	Waiting for link
> 	5 seconds . . .
> 	Pump told us: no DHCP reply recieved.
> 
> Gut check says DHCP server is being pinged too fast by an address that 
> was just allocated but I'm not sure where to head next.. might be way 
> off base but if anyone has some guesses, I'd like to hear them.  Install 
> is 100% right on after this, but w/o this fixed I can't have a 
> person-less-install.
> 
> If there is no direct solution, is there a way to get it to just try 
> again if it fails?
> 
> Thanks,
> -a
> 
> -- 
> Andy Ciordia, Network Engineer
> Planned Giving Design Center (www.pgdc.com)
> 10800-D Independence Pointe Pkwy, Matthews, NC 28105
> Ph: (704)849-0731 x106  |  Fax: (770)456-5239
-- 
       Brian Long                      |         |           |
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