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Hi, I am having a problem at work we have a dhcp server to serve out addresses it is a windows 2000 server and one of my other servers has a static ip address but i still see mltiple leased addresses for it in the dhcp leased address table their is also one other machine doing this but it needs a dns address any one have any ideas why this might be soing this.
So your server that has the static IP address is still trying to get an address from the DHCP server? Are there multiple network interfaces (NIC's) on that server?
No.
If you delete the entries for that server in the DHCP table then reboot the server, do those entries then show back up in the table?
Using "ipconfig /all" on the server, what is the IP address that it shows? Multiple IP address there, or just your one static address?
if id do ipconfig/all it only shows one ip address the statically assigned ip address and if i delete the entries from the dhcp server with out rebooting the server they will come back in a few hours. I am starting to thing it is something between the 2 servers that is causing the problem.
And when those entries come back, you are sure that they are entries for the server in question because the Unique ID field (MAC address) on the DHCP Address Lease table matches the MAC address of the server with the static IP address?
yes it is the same server that I as sure of, every thing matches.
Would the static address assigned to your server appear in your address pool for the DHCP server? If so, have you set up an exclusion for it on the DHCP server?
yea I seee the static ip in the list of leased ip addresses but it is leased to the correct server under the unique id colom it shows the mac address of the server and under the type colom it says none, but on the duplicutes under type it says dhcp and under unique id it says ras.
OK...I maybe misunderstanding this...
W2K reserves addresses.... eg 192.168.0.1 to 192.168.0.20
to be used for static addresses, other servers, printers etc
Make sure your server has an address in that range....or check out what the static reservations are on the DHCP server....
If it is in the static range...it should not show up in the leases afaik
So I think you may have assigned the server a static address which is not excluded in DHCP
Clear as mud ;)
MLF
Is the server with the static IP address also running a Remote Access server?
ok um I am so lost here sorry about all of the vagness its my first day on the job and as soon as I come in this is the problem i get stuck with I dont even know what the non dhcp server is running or how they are connected. but in the lease experation its says reseavation(incatiove)
ok um I am so lost here sorry about all of the vagness its my first day on the job and as soon as I come in this is the problem i get stuck with I dont even know what the non dhcp server is running or how they are connected. but in the lease experation its says reseavation(incatiove)
Quote:
Originally posted here by Riot
ok um I am so lost here sorry about all of the vagness its my first day on the job and as soon as I come in this is the problem i get stuck with I dont even know what the non dhcp server is running or how they are connected. but in the lease experation its says reseavation(incatiove)
It's ok, no need to apologize...
I'd be curious to know if the server that has the static address is also running Remote Access - if so, I'm wondering if when a remote user connects to the Remote Access server, the RAS is using DHCP to assign the remote client an IP address - the RAS becomes the middleman so to speak between your network and the remote client, which could explain why the MAC address of the server shows multiple times in the DHCP table (those entries are for the remote users) even though the server has a staticly assigned address.
This is just a guess - I use remote access but I have an assigned IP range for my remote users, so I'm not sure how using DHCP for the remote users would display in the DHCP table...
Ok well thanks for all of your help i fixed the peoblem I hope apperantly the system was running a few diffrent ras software when i disabled it all of the duplicates dissapeared and it should be fine because their is no reason their should have been running ras on their execpt for maby one thing but it shoud not be a problem ty.
Quote:
Originally posted here by Riot
Ok well thanks for all of your help i fixed the peoblem I hope apperantly the system was running a few diffrent ras software when i disabled it all of the duplicates dissapeared and it should be fine because their is no reason their should have been running ras on their execpt for maby one thing but it shoud not be a problem ty.
Glad to hear you got it taken care of....
Me too thanks for all of your help. Their is just one thing I dont under stand is what was making all of the connections through the server because as far any any body knew it should not have been being used as an RSA.Quote:
Glad to hear you got it taken care of....
If you can get access to the remote access logs, it'd probably be worth looking through to see if you can figure out if connections were being made to the network and possibly what activity was going on...
Sounds like a good idea I will check it out next time I get some free time at work.