Help: dhcpd: DHCPDISCOVER…:: no free leases



  • please help me :-*
    i used pfsense 2.0.1 (no vlan, no multi dhcp, it's very simpe network: wan-pfsense(as gateway,dhcp server)-lan)
    config: dhcp range: 10.10.11.[10-250]/24
    i have 98 client online, when client >100,i have a problem:
    Sep 18 13:56:59 dhcpd: DHCPDISCOVER from c4:17:fe:6d:29:b2 via bge0: network 10.10.11.0/24: no free leases
    Sep 18 13:57:03 dhcpd: DHCPDISCOVER from c4:17:fe:6d:29:b2 via bge0: network 10.10.11.0/24: no free leases
    Sep 18 13:57:10 dhcpd: DHCPDISCOVER from 78:dd:08:c5:18:82 via bge0: network 10.10.11.0/24: no free leases
    Sep 18 13:57:11 dhcpd: DHCPDISCOVER from c4:17:fe:6d:29:b2 via bge0: network 10.10.11.0/24: no free leases

    1 year ago was ok but from 4 days ago...
    english with me: very bad, sorry if failed to Spell (i use google tran  ;D)
    thanks read



  • When clients go offline they don't always release their lease. Therefore it is possible you might have (for example) 50 clients online but 200 "active" leases. It might help to reduce the lease time OR increase the range of available addresses.



  • @wallabybob:

    When clients go offline they don't always release their lease. Therefore it is possible you might have (for example) 50 clients online but 200 "active" leases. It might help to reduce the lease time OR increase the range of available addresses.

    thanks for your help
    i set 1000 clients and now it's ok
    thank you very very muck  :-*


  • LAYER 8 Global Moderator

    So you changed your lan network to bigger, you posted you were using a /24 – sorry but /24 does not allow for 1000 clients.  You would have to be at min /22 for 1000 nodes



  • @johnpoz:

    So you changed your lan network to bigger, you posted you were using a /24 – sorry but /24 does not allow for 1000 clients.  You would have to be at min /22 for 1000 nodes

    /24 : old subnet
    /21: now (/21 have 2000 clients  but i set range 1000 clients)
    thanks for reply


  • LAYER 8 Global Moderator

    not really the way I would of gone about it that is for sure.  How about just lowering the lease so that they would be freed up after a client disconnected.  Default I believe is 24 hours.


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