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PXE Booting using Cisco DHCP

Posted on 2011-02-10
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Last Modified: 2012-08-13
We have a location with three subnets. Data, voice, wireless.

A Novell server (or windows doesn't matter) will server DHCP on the data vlan no problem. Using ip helper-address, we can get Novell Zenworks PXE booting working fine.

Today the server crashed and we moved DHCP to the core switch of the location. DHCP is working and we still have the ip helper-address on the interface.

PXE booting doesn't work anymore. We get bootfile name not received. It also didn't show that it received an IP address. I added option 66 ip 10.0.0.33 and option 67 ascii pxelinux.0 and now I get an IP address followed by TFTP... like its waiting for someone to respond. TFTP is not active on the zenworks server. Should it be?

Has anyone ever gotten DHCP working on the core switch as well as using a pxe boot server?
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Question by:jjmartineziii
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7 Comments
 
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Expert Comment

by:tjdabomb
ID: 34864138
I am a bit confused, is the novell box back up and running or not?  Are you trying to get your workstations an ip via your switch while you repair the novell box?
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by:jjmartineziii
ID: 34864223
We are decomissioning the Novell box the is on site. The zenworks box is across the WAN. Dhcp is now on the local core switch
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by:discgman
ID: 34864427
Make sure your copying the files along with the tftp program. This inlcudes the output file and the wininstall folder (which needs to be shared). Also make sure the scope in the dhcp matches which ever wan its on and has a decent number of address and the right subnet and so forth.
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by:jjmartineziii
ID: 34864987
@discgman wrong question?
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discgman earned 500 total points
ID: 34865372
That error tells me its not finding the cfg file to boot.
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by:jjmartineziii
ID: 35112587
This is an abandon question.
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Expert Comment

by:Tech Services
ID: 38222539
Hey,

I'm using a cisco 2851 router to serve pxe booting from our Novell environment. This is what one of the dhcp ranges looks like.

ip dhcp pool Student_DHCP
   import all
   network 10.11.112.0 255.255.240.0
   bootfile nvlnbp.sys
   next-server 10.11.50.36
   dns-server 10.11.50.2 10.11.50.3
   default-router 10.11.120.1

The two key entries here at the bootfile entry and the next-server entry. The bootfile entry is the file you want to boot from your tftp directory. The next-server entry is the location of the tftp server.
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