Kawasaki Sportsbike Riders Club - Australia - Online Forum

by **sicari** » Wed Mar 25, 2009 12:21 pm

Alright guys, heres the problem:

We've set up two DHCP servers in the network. The first, located in the PDC, has a global scope. The second is a local scope located in a BDC.
After everything was up and running, we started passing machines from static IPs to DHCP. On 90% of the computers, this will be done flawlessly. But on the remaining computers, something strange happens: they randomly lose their ability to logon. That is, after a few restarts they cannot find the DCs anymore. Since this was all provoked by the static-to-DHCP change, we focused on this during the first weeks, but with no luck. I have a few Win98SE workstations installed *from scratch* that will also present these symptoms. On 50% of the time, deleting the DHCP lease for the troubled machine and rebooting it will let it logon again. On the other 50%, a reboot of the PDC was needed (at least that fixed the problem).

However, I've found today that none of these tasks are needed. I can logon again on a Win98SE machine by simply rebooting it into Safe Mode and then back into normal mode.

What the heck is going on, I don't know. It seems it's a Win98 bug, but if any admins know what else could it be, I' be happy to read about that.

Thanks a lot

by **dave#3** » Wed Mar 25, 2009 12:57 pm

PDC and BDC + Win98SE? Are you in a time warp from 1999? FFS dude it's 2009!

When the clients boot up and can't logon to the domain are they still able to access the IP network? Can you ping them from another host and/or the DC? Is WINS running correctly? Anything of relevance logged to the event log on the DC? If all else fails I'd suggest installing a good packet sniffer like ethereal, putting a hub between the client PC and the switch (surely you're using switches!) and capturing the traffic flow. This should give you an idea of where the process is breaking down. if necessary you can compare this to a working flow.

If you get stuck post up or email me the packet capture and I'll have a look for you.

by **Smitty** » Wed Mar 25, 2009 1:12 pm

dave#3 wrote:PDC and BDC + Win98SE? Are you in a time warp from 1999? FFS dude it's 2009!

yeah
with mutliplexers running serial comms :twisted:

When the clients boot up and can't logon to the domain are they still able to access the IP network? Can you ping them from another host and/or the DC? Is WINS running correctly? Anything of relevance logged to the event log on the DC? If all else fails I'd suggest installing a good packet sniffer like ethereal, putting a hub between the client PC and the switch (surely you're using switches!) and capturing the traffic flow. This should give you an idea of where the process is breaking down. if necessary you can compare this to a working flow.
.

agree Dave...I suspect the IP addresses are changing ..maybe at a minimum run ipconfig (ooops sorry....winipconfig on 98 :roll:

)
and see what you get .maybe running the netstat command could also help

cheers

Smitty

by **fireyrob** » Wed Mar 25, 2009 1:36 pm

slowly taking over the world...

http://www.youtube.com/watch?v=SkzAJs7NutM

by **dave#3** » Wed Mar 25, 2009 1:36 pm

Smitty wrote:
dave#3 wrote:PDC and BDC + Win98SE? Are you in a time warp from 1999? FFS dude it's 2009!

yeah
with mutliplexers running serial comms

When the clients boot up and can't logon to the domain are they still able to access the IP network? Can you ping them from another host and/or the DC? Is WINS running correctly? Anything of relevance logged to the event log on the DC? If all else fails I'd suggest installing a good packet sniffer like ethereal, putting a hub between the client PC and the switch (surely you're using switches!) and capturing the traffic flow. This should give you an idea of where the process is breaking down. if necessary you can compare this to a working flow.
.

agree Dave...I suspect the IP addresses are changing ..maybe at a minimum run ipconfig (ooops sorry....winipconfig on 98 )
and see what you get .maybe running the netstat command could also help

cheers

Smitty

Actually, to be completely correct it's winipcfg on win98

I don't think the problem is with IPs that are changing per se, I think something is configured incorrectly (and I'm actually inclined to guess it's on the second DHCP server) - it's probably to with WINS but could be to do with IP routing or a myriad of other possible issues.

by **Blurr** » Wed Mar 25, 2009 1:45 pm

all of you need to go to your room right now!!!!!!!! and dont come out until your willing to talk english :roll:

by **Glen** » Wed Mar 25, 2009 1:46 pm

dave#3 wrote:
Smitty wrote:
dave#3 wrote:PDC and BDC + Win98SE? Are you in a time warp from 1999? FFS dude it's 2009!

yeah
with mutliplexers running serial comms

When the clients boot up and can't logon to the domain are they still able to access the IP network? Can you ping them from another host and/or the DC? Is WINS running correctly? Anything of relevance logged to the event log on the DC? If all else fails I'd suggest installing a good packet sniffer like ethereal, putting a hub between the client PC and the switch (surely you're using switches!) and capturing the traffic flow. This should give you an idea of where the process is breaking down. if necessary you can compare this to a working flow.
.

agree Dave...I suspect the IP addresses are changing ..maybe at a minimum run ipconfig (ooops sorry....winipconfig on 98 )
and see what you get .maybe running the netstat command could also help

cheers

Smitty

Actually, to be completely correct it's winipcfg on win98

I don't think the problem is with IPs that are changing per se, I think something is configured incorrectly (and I'm actually inclined to guess it's on the second DHCP server) - it's probably to with WINS but could be to do with IP routing or a myriad of other possible issues.