2k3 cant ping xp

hey gang,

i have 2k3 enterprise server running dns, ad, dhcp, iis, rras and patched up to the max.

the server is running fine, everything is configured and i've setup nat on the nic connected to my modem. (im assuming this is correct because the wizard did this for me)

the second nic in the server is connected to a switch and that nic is setup with static ip 192.168.0.2 (the modem is .1 it runs dhcp for some reason, this doesnt affect the 2k3 server dhcp so all's good in that department)

the xp client has service pack one and all the latest patches as well, its configured with ip address 192.168.0.5 with its gateway and dns server being 192.168.0.2 (the server).

ive disabled the xp firewall, and the simple firewall available for nat on the wan card ..that shouldnt matter though. the qos packet scheduler thingy has also been disabled on the xp machine.

now the problem, i just cant ping the xp machine from the win2k3 server and for the life of me i cant figure it out. i can ping the server from the xp machine fine, i can ping both nics and the web and i have web access on the xp machine as well.

the only hint i've had so far is that when i try to repair the nic on the xp machine i get an error "The Following steps of the repair operation failed: Flushing the Arp Cache" so i flush the arp cache "arp -d" then check it "arp -a" its all clear. go to repair it again, and i get the same error. i dunno if this has anything to do with me not being able to ping the xp machine from the server but im just giving all the info i have.

one other thing, i cant seem to join the xp machine to the domain. i get the pop asking for the authorised person to add the computer to the domain, i type in the adminstrator account and password and i get an error saying the rpc server was unavailable. the service is running on the 2k3 machine though, so im hoping that this is related to me not being able to ping back to teh xp machine.

anyways, any help would be greatly appreciated.

-shaft

I've read your message, I need to know a couple of things. I'm assuming that sinse you have this much setup on the machines that you know your way around but just to make sure, what do you have the subnet mask set at on all nics? I am thinking that this is related to the nat you are running for your firewall on the server, and you are running XP Pro? Also I would reinstall the QOS packet Scheduler it helps communications to the server and other devices on the network. I assume also that you are using a cable or DSL modem? Let me know some more and check these items.

DudeDomain