+ Post New Thread
Results 1 to 12 of 12
Wireless Networks Thread, Dhcp secondary scope in Technical; We have added a new scope to dhcp, as we have just ran out of adresses on the old range ...
  1. #1

    Join Date
    Oct 2006
    Posts
    106
    Thank Post
    9
    Thanked 3 Times in 3 Posts
    Rep Power
    17

    Dhcp secondary scope

    We have added a new scope to dhcp, as we have just ran out of adresses on the old range but stuff around the network does not seem to be picking up any of the new range is there a button or option i need to set up so it moves over if there are no adresses left on the first range?

    Cheers

  2. #2

    Join Date
    Oct 2007
    Posts
    131
    Thank Post
    16
    Thanked 14 Times in 14 Posts
    Rep Power
    17
    have you authorised the scope you can do this by right clicking on the scope and clicking authorise scope

  3. #3

    Join Date
    Oct 2006
    Posts
    106
    Thank Post
    9
    Thanked 3 Times in 3 Posts
    Rep Power
    17
    Done that already

  4. #4
    User3204's Avatar
    Join Date
    Aug 2006
    Location
    Wirral
    Posts
    769
    Thank Post
    55
    Thanked 66 Times in 62 Posts
    Rep Power
    34
    ...is it switched on ?
    .. but seriously, you can have it disabled.

    We have various DHCP scopes on some of our servers, I have no idea how they work out which to run, but I suspect it is to do with a) some clever thing in the router configs, b) the fact that we haven't filled up the wired ranges yet means they don't get to the wireless ranges.

  5. #5
    bio
    bio is offline
    bio's Avatar
    Join Date
    Apr 2008
    Location
    netherlands
    Posts
    520
    Thank Post
    16
    Thanked 130 Times in 102 Posts
    Rep Power
    38
    please post your scopes with ip addresses and subnetmasks so we can look if subnetting is a problem.

    regards
    bio..

  6. #6

    Join Date
    Oct 2006
    Posts
    106
    Thank Post
    9
    Thanked 3 Times in 3 Posts
    Rep Power
    17
    Quote Originally Posted by bio View Post
    please post your scopes with ip addresses and subnetmasks so we can look if subnetting is a problem.

    regards
    bio..
    We can Give static addy's out of the 2nd range and they work fine, DHCp is just not giving adresses out from the 2nd range.

    1st range

    10.4.108.71

    10.4.111.200

    255.255.252.0


    2nd range

    10.4.224.1

    10.4.231.253

    255.255.248.0

    Both ranges show as **Active**

  7. #7
    jamin100's Avatar
    Join Date
    Feb 2008
    Location
    Birmingham
    Posts
    1,079
    Thank Post
    151
    Thanked 100 Times in 80 Posts
    Rep Power
    33
    How long are the leases set for?

    Have you tried a ipconfig /flushdns then /registerdns, /release, /renew to force the clients to pick up new IP's from the DHCP server

  8. #8

    Join Date
    Oct 2006
    Posts
    106
    Thank Post
    9
    Thanked 3 Times in 3 Posts
    Rep Power
    17
    Quote Originally Posted by jamin100 View Post
    How long are the leases set for?

    Have you tried a ipconfig /flushdns then /registerdns, /release, /renew to force the clients to pick up new IP's from the DHCP server
    They are both set for 7 days...


    The 1st range is at 0% avalible addys, i assume the clients should just take a new addy from the new 2nd pool?

  9. #9

    Michael's Avatar
    Join Date
    Dec 2005
    Location
    Birmingham
    Posts
    9,342
    Thank Post
    242
    Thanked 1,602 Times in 1,278 Posts
    Rep Power
    346
    Is the new scope on the same server or a different server? If it's a different server then as a recommendation, set it up as a DNS server also, then add the server to the list of DNS servers within DHCP, under 006.

    Reboot a workstation and from a command prompt type ipconfig /all and both DNS and any external DNS servers should show up.

  10. #10

    Join Date
    Oct 2006
    Posts
    106
    Thank Post
    9
    Thanked 3 Times in 3 Posts
    Rep Power
    17
    Quote Originally Posted by Michael View Post
    Is the new scope on the same server or a different server? If it's a different server then as a recommendation, set it up as a DNS server also, then add the server to the list of DNS servers within DHCP, under 006.

    Reboot a workstation and from a command prompt type ipconfig /all and both DNS and any external DNS servers should show up.
    The ranges are both on the same dhcp server.

  11. #11
    diggory's Avatar
    Join Date
    Sep 2008
    Location
    Bristol
    Posts
    85
    Thank Post
    36
    Thanked 11 Times in 10 Posts
    Rep Power
    14
    I think your DHCP server is setup to be on subnet 1 and I suspect that the rest of your PCs are on that subnet.
    I can think of two options...
    Setup a router (or routing switch) to seperate your network into two subnets, then the router can pass DHCP requests for the second subnet to your DHCP server.
    Setup the second subnet directly on your DHCP server - ethier with a VLAN on one NIC or use another NIC.

    Watch yourself when doing this - things can get a bit ... er messy...

  12. Thanks to diggory from:

    rob101 (21st May 2009)

  13. #12

    Join Date
    Oct 2006
    Posts
    106
    Thank Post
    9
    Thanked 3 Times in 3 Posts
    Rep Power
    17
    All sorted

    We installed another Nic, then gave that an ip addy off the 2nd range, and now lease's are being taken out on the new range.

    Thanks.



SHARE:
+ Post New Thread

Similar Threads

  1. DHCP Scope
    By KWestos in forum Windows Server 2000/2003
    Replies: 1
    Last Post: 17th March 2009, 11:05 PM
  2. DHCP Scope is running out
    By shirzay in forum Network and Classroom Management
    Replies: 22
    Last Post: 7th August 2008, 06:31 PM
  3. DHCP Exclusion / not in scope
    By TornUp in forum Wireless Networks
    Replies: 5
    Last Post: 4th June 2008, 09:38 AM
  4. Secondary DHCP server
    By timbo343 in forum Virtual Learning Platforms
    Replies: 4
    Last Post: 12th October 2007, 01:45 PM
  5. Options on spliting DHCP scope
    By tosca925 in forum Windows
    Replies: 12
    Last Post: 16th November 2006, 11:19 AM

Thread Information

Users Browsing this Thread

There are currently 1 users browsing this thread. (0 members and 1 guests)

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •