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Forum Discussion

psda's avatar
psda
Aspirant
Jan 03, 2024

Problems creating reserved IP address in a DHCP Pool

We created a pool of reserved DHCP IP addresses under an older firmware release (13.0.4.13).   We've upgraded to 13.0.4.17 and are now trying to both update existing reservations and add new reservations of manual IP addresses.

 

After the  13.0.4.17 upgrade, when I try to either add or update a static DHCP pool reservation I get the following error

 
Error! Failed to Set 'Host Mask' with '255.255.255.0'
 
The IP range for this pool is
 
10.4.0.x
 
I've tried a variety of valid  host masks but they  all result in this error.

5 Replies

  • LaurentMa's avatar
    LaurentMa
    NETGEAR Expert

    Hi psda ,

     

    Sorry about this issue, maybe there is a conflict somewhere else - can you edit your config file or do a show run like I do below, to show your static pools and your VLAN interfaces? Alternatively, please send your tech-support file (Diagnostics\Support Diagnostics to ProAVDesign@netgear.com) with a link to this post and one of our SEs will help you.

     

    On my side, using the latest NETGEAR Engage Controller (www.netgear.com/engage) and creating a VAN 10 with your IP scheme, I can create plenty of static pools easily in Engage (Site Settings\VLAN Routing and DHCP Server\Advanced\DHCP Reservations):

     

    interface vlan 1
    routing
    ip address 192.168.253.1 255.255.255.0
    exit

     

    interface vlan 10
    routing
    ip address 10.4.0.1 255.255.255.0
    exit


    ip management vlan 1 192.168.253.1 255.255.255.0
    router rip
    exit

     

    service dhcp
    ip dhcp excluded-address 192.168.253.1 192.168.253.9
    ip dhcp excluded-address 192.168.253.101 192.168.253.254
    ip dhcp excluded-address 192.168.20.1 192.168.20.99
    ip dhcp excluded-address 192.168.20.201 192.168.20.254
    ip dhcp excluded-address 10.4.0.1 10.4.0.99
    ip dhcp excluded-address 10.4.0.201 10.4.0.254
    ip dhcp pool "pool_dynamic_1"
    lease 0 4 0
    dns-server 8.8.8.8 4.4.4.4
    default-router 192.168.253.1
    network 192.168.253.0 255.255.255.0
    exit

     

    ip dhcp pool "pool_dynamic_10"
    lease 0 4 0
    default-router 10.4.0.1
    network 10.4.0.0 255.255.255.0
    exit

     

    ip dhcp pool "aabbccddeeff"
    default-router 10.4.0.1
    hardware-address aa:bb:cc:dd:ee:ff
    host 10.4.0.101 255.255.255.0
    netbios-node-type b-node
    exit

     

    ip dhcp pool "aabbccddeeaa"
    default-router 10.4.0.1
    hardware-address aa:bb:cc:dd:ee:aa
    host 10.4.0.102 255.255.255.0
    netbios-node-type b-node
    exit


    exit

     

     

    • psda's avatar
      psda
      Aspirant

      I'm using the main UI and not  the engage controller.  I experimented with the engage controller and DHCP reservations but these only  work if the controller is running and that isn't a viable scenario for our config.

       

      What show  option is dumping out the info you  displayed above?

      • LaurentMa's avatar
        LaurentMa
        NETGEAR Expert

        Can you do "show run" after "enable" so in global admin mode, and copy paste the end of the config here, like me, starting with the VLAN IP interfaces, and all the DHCP services under?

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