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SBS2011 DHCP reservations not come accros

Posted on 2013-01-20
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Last Modified: 2013-01-25
Using the SBS migration wizard transferred DHCP to a SBS 2011 server from a Server 2003. The role is the new server but the resevations didnt come across. Any idea how i get them from the old server. Even to view them would help. DHCP no longer runs on the server 2003.
Urgent as client is ack monday and we have about 12 reservations but dont know what they are
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Question by:techies123
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Expert Comment

by:phillipnor
ID: 38798255
If only a few reservations then suggest you disable service (Control panel, admin tools, services) DHCP on SBS 2011 and enable on 2003.  Then enable on 2003 and make a note of mac address and ip reservations (just click plus sign to expand all - not much to look through).  If you do need to get reserved mac addresses (you can see them on 2003 in DHCP once enabled) then simple open command prompt on any machine and type  arp -a <ip address>
e.g. arp -a 192.168.1.1
This will give you the MAC address of reserved ip (should not need to do this as 2003 will hold old IP addresses).
Once you have made note, just disabled DHCP on 2003 server and enable it on SBS 2011
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by:techies123
ID: 38798278
thanks
cant start it on the old server as it says it is disabled, how do i enable it?
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by:JAN PAKULA
ID: 38798937
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Expert Comment

by:phillipnor
ID: 38798958
Click start, control panel, admin tools, services, double click DHCP and change from disabled to manual.  Click apply. Click start.  When finished with 2003 DHCP just change it back from manual to disabled or leave as manual (do not want it automatic as it will start on server reboot).
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Accepted Solution

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techies123 earned 0 total points
ID: 38798965
Sorted. DHCP Import was failing from old DHCP box due to Internal error - DHCP Server Option 81 (DNS). Once the new Server matched the DNS settings on the old and the Scope was removed then import worked Ok. All reservations and exclusions are now in place.
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Author Closing Comment

by:techies123
ID: 38818013
The matter was referred to me by a colleague and sorted.
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