Set up a new dhcp server with a new span.
The service it up och it is autorized but it have not given out a single address. Why doen nobody ask it for a ip-adress?

anneli

make sure logging is on and check you logs @ c:\windows\system32\dhcp\

you should see acks or nacks in the logs
if you can not then the issue is with your Switch processing bootp/dhcp packets. Oh you can also use dhcploc from the support pack but it just crashes when I use it :(

Hey
In the log I se computers updating there ip-address from another scope so it seems to be just that scope that does not work. Do you know any way to force a client to pick an ip-address from a specific server.

Another problem when we closed on of our 2 ad server nobody could print, any idea?

anneli

what are your scopes? Generally two scopes means two different ip ranges. If this is so then you will need a relay agent or if you are not using vlans/router then your best bet is to use classid on the scope but you have to set up each client to specifically use the right classid

to do this on the client

ipconfig /classid "local area connection" scope2

and
right click the server in dhcpmgmt.msc define user class
add new class call it scope2 and under the ascii box type scope2 you should see 73 63 6f 70 65 32 in hex under binary

once that is done goto the scope then scope options click the advanced button and you should see scope2 as an option under user class add your scope options ie gateway dns etc click ok

your clients with classid set will now only get their ip addresses from that scope.

Regarding your printer issue only one server will host the printers even if you are using pooling. ie \\server1\printer1\
if the server is off the clients will need an entry for say \\server2\printer1

There seems to be problem with start and end ip-adress. I try to set up a new scope
10.20.7.1 - 10.20.8.254 and subnetmask 255.255.0.0 and I get the error "the address range and mask conflict with an existing scope"
On the other dhcp server we have the same subnet mask but a different span so nothing is conflicting. What am I doing wrong?

anneli

I tried another one 10.21.7.1-10.21.8.254
and that worked but i want the 10.20.....
And we have not given out between 7 and 8 before.

anneli

Right....

Dhcp cannot differentiate between ranges in a ClassB Address so while you are trying to apply a specfic range the dhcp server still sees the scope as 10.20.x.x whether it is 10.20.1.254 or 10.20.255.254. Best pratice would be to create a large scope on both dhcp server's say 10.20.1.254 to 10.20.254.255 (multiple scopes will not increase performance) and then use the exclusion range on one server not to conflict with the other server. ie exclude 10.20.128.0 to 10.20.255.254 on server1 and exclude 10.20.1.1 to 10.20.127.255 on server2(Good Redundancy). Remember that 10.21.x.x is on a different network segment than 10.20.x.x hence why it does not conflict. Where I work we have 170 scopes in a single superscope for administration but each scope is on a seperate VLAN and uses our cisco layer 3 switches to act as the relay agent.

All I can say is keep it simple and it will work overcomplicate it and you are just asking for trouble.

A good place to do a bit of reading on the subject is here

http://technet2.microsoft.com/windo...

thanks alot....
Maybe you know why printing stopped working for the whole net why we closed our first of 2 ad-servers. Do I have to do something???

anneli

Where I work we have 170 scopes in a single superscope

Wow! Must be a very large environment, or very small scopes.......lol

I'm curious, which is it?

No we are not large just small scops!!!!
Now I have set up as you said.
2 larger scops, exactly the same on 2 dhcp servers but excluded half on both(different halfs). I hope it starts to gives out ip-addresses on both. It seems that everybody just ask for ip-addresses from one server!!!??? And that one I want to close for a little while. It is our first ad-server.

anneli

soon I go crazy, now I turned of the dhcp service on our first ad server and tried to restart a computer but it did not work my "new" dhcp server will not give out any new ip-address. I tried to restart the server but it did not help. Any ideá what can be the problem.

anneli