Tracing DHCP

  • Thread starter Thread starter Guest
  • Start date Start date
G

Guest

I have an older network that didnt use dhcp, but a new serve has been setup
for this purpose but i have now found that there is a dhcp server on the
network giving out 169.254.0.0 addresses but I have no idea what the system
switch or router is.
Is there any way of tracing a dhcp server ??
 
Is there any way of tracing a dhcp server ??

http://www.ethereal.com
there you can get a tool, which shows teh network traffic. You can sue a
filter for dhcp.

somthing i found on google:
The 169.254.y.z with a subnet mask of 255.255.0.0 is automaticall
generated by the "Automatic Private IP Addressing (APIPA) feature of win
xp prof. (i.e.). That happens, if youre computer should use dhcp, but
cannot find a server.

regards, enno lenze
 
Thanks for the info, the systems we are using are windows 2k is it the same
for them

Joe
 
There is no DHCP Server.

That address set is a default for Windows when the machines is set to use
DHCP, yet cannot find a DHCP Server,...in your case because there isn't one.
 
I see by the first post that a DHCP has actually been added,... I
misunderstood.

None-the-less you are having that problem because the machine cannot find
the DHCP. This would happen either due to a cabling problem or because the
DHCP and your Client are not in the same subnet and the Router between them
is not forwarding DHCP queries properly. I assume you have multiple subnets
since you mentioned "router" earlier? This is why the posts should include
relevant data, or it just turns into a "guessing game".
 
DHCP servers must also be "authorized".

--

Phillip Windell [MCP, MVP, CCNA]
www.wandtv.com

Phillip Windell said:
I see by the first post that a DHCP has actually been added,... I
misunderstood.

None-the-less you are having that problem because the machine cannot find
the DHCP. This would happen either due to a cabling problem or because the
DHCP and your Client are not in the same subnet and the Router between them
is not forwarding DHCP queries properly. I assume you have multiple subnets
since you mentioned "router" earlier? This is why the posts should include
relevant data, or it just turns into a "guessing game".

--

Phillip Windell [MCP, MVP, CCNA]
www.wandtv.com


joe said:
Thanks for the info, the systems we are using are windows 2k is it the same
for them

Joe
Click to expand...
Click to expand...
 
Back
Top