|
OpenBSD General Other questions regarding OpenBSD which do not fit in any of the categories below. |
|
Thread Tools | Display Modes |
|
|||
I cannot answer these questions completely, but the OpenBSD dhclient(8) states:
Code:
In order to keep track of leases across system reboots and server restarts, dhclient keeps a list of leases it has been assigned in the /var/db/dhclient.leases.<IFNAME> file. IFNAME represents the network interface of the DHCP client (e.g. em0), one for each interface. On startup, after reading the dhclient.conf(5) file, dhclient reads the leases file to refresh its memory about what leases it has been assigned. Old leases are kept around in case the DHCP server is unavailable when dhclient is first invoked (generally during the initial system boot process). In that event, old leases from the dhclient.leases.<IFNAME> file which have not yet expired are tested, and if they are determined to be valid, they are used until either they expire or the DHCP server Code:
RE: doubling network users from 250 to 500 Having so many clients in one subnet or broadcast domain usually is not such a good idea. You can use subnets and still use a central DHCP server, by setting up dhcrelay(8) in each subnet.
__________________
You don't need to be a genius to debug a pf.conf firewall ruleset, you just need the guts to run tcpdump |
|
||||
Per the protocol, an acknowledged lease is reserved until expiration or until the client explicitly releases it. A DHCP server will not reassign a leased address.
As j65nko suggests, if your architecture permits you could manage the load with multiple subnets. There are two other options you may wish to consider, as well:
Edited to add: The DHCP server will always test a lease address before reassigning it. If the address is still in use, it will not be issued as a new reassigned lease to the requesting client. Instead, the address will be placed in the "abandoned" address queue for misused addresses and refused leases. The abandoned queue will not be utilized until all other addresses in the pool are consumed with active leases, and these abandoned addresses will be tested again prior to the server issuing any of them as a reassigned lease. Last edited by jggimi; 11th October 2013 at 02:06 PM. Reason: addendum |
Thread Tools | |
Display Modes | |
|
|
Similar Threads | ||||
Thread | Thread Starter | Forum | Replies | Last Post |
dhcpd not working as I would expect | vdubjunkie | OpenBSD General | 6 | 9th July 2010 03:45 PM |
dhcpd, dhcrelay, and ipsec VPN | dontek | OpenBSD General | 2 | 22nd May 2010 08:52 PM |
dhcpd, vista and wlan | hamba | FreeBSD Ports and Packages | 5 | 8th September 2009 04:34 PM |
dhcpd and dns | sputnik | OpenBSD General | 8 | 8th May 2009 02:50 PM |
dhcpd within ezjail? | zelut | FreeBSD General | 7 | 10th February 2009 10:31 PM |