RIS / DHCP on WAN

[Carlton Whitmore]

I have RIS working locally and I can request an IP through
our WAN, but when I try to use the RIS diskette over the
WAN it cannot find the DHCP server.
Any suggestions,
Carlton.

 

[NIC Student]

Hi Carlton,

Try this article, read the section titled "More Information":

Using Dynamic Host Configuration Protocol Options 60, 66, 67 to Direct PXE
Clients to RIS Servers May Fail
http://support.microsoft.com/default.aspx?scid=kb;en-us;259670

Also, if they are 3Com cards, try their PXE boot floppy:

http://www.3com.com/products/en_US/result.jsp?selected=5&sort=effdt&order=desc&sku=3CMBA-D

(you may need to copy & paste the address in if the URL breaks)

--
Scott Baldridge
Windows Server MVP, MCSE


"Carlton Whitmore"

 

[Carlton Whitmore]

Scott,
We are using 3com cards so I downloaded the PXE file. The
setup has several options PXE, TCP/IP, etc...
I tried PXE the first time, but it failed. I then tried to
setup TCP/IP and it had a place to choose a .txt file for
the TFTP server. How do I generate that file?
Carlton.

 

[NIC Student]

I've seen this situation before, the 3Com boot floppy solved the problem.
Are these old nics?

Can your RIS clients get an address if they are booted with the F12 key
rather than the boot floppy?

I've only used the PXE boot option, not TCP/IP, they did give an e-mail
address for support: (e-mail address removed)

Since the 3Com PXE failed and MS's PXE boot floppy failed, I'm wondering if
your routers/switches are timing out. Do you have spanning tree enabled?
You may need to disable it temporarily to test and perhaps lengthen the
timeout.

Do your routers have a helper address for both the RIS server and the DHCP
server?

Watch the clients just before they fail, the proper sequence is: BootP,
DHCP, BINL, TFTP. The BINL can appear really fast, so if that doesn't
appear then no biggie, but it is important to see where the failure occurs.

 

[Carlton Whitmore]

Scott,
I can't even the get PXE to work on the same subnet.
I finds the DHCP server, but fails on TFTP. (says it could
not find the TFTP server)
I have two DHCP servers and one of them is also the TFTP
server.
I need to get PXE working locally before I try it over
across the WAN.
Any other ideas?
Carlton.