Static Leases do not work

[Jeff Waller]

I'm not sure this is what he is angling for.  I think what he wants is some directive that
once a lease is given out to a mac address that matches a particular let's say class,
that IP address is never given out to another mac address until it is revoked.  I think
this is a not met by the suggestions so far.

Some important aspects:

1) He doesn't want to deal with the administrative hassle of defining a list of mac addresses,
so "host" or "subclass" declarations can not be used

2) He doesn't want to deal with the minutia of having to edit the .conf file each time a new
MAC is recognized.

What would happen if you set the lease time in a pool for these devices to infinity?  I think this would
work for you, but if the client released the lease (which is something that clients are allowed to do)
then if would become free.

Perhaps a new directive available at various scopes:

client-release-ignored

So how do get rid of a lease once you know you need to.  You could edit the leases file and restart, or
more elegantly use OMAPI and forcibly set the lease expire time to now.


On Feb 2, 2012, at 7:55 AM, jeffrey j donovan wrote:


On Feb 2, 2012, at 4:10 AM, Küppers, Malte wrote:

Hi there,

I’m currently setting up a large DHCP Server in my company with about 10000 subnets. I managed to get everything working fine, but I want to set static addresses for some hosts (e.g. printers).
The problem I’m experiencing is, that I don’t know how to make them static persistently. I used omshell to register a new host object from given MAC and set an IP but I’m not satisfied with that, because the addresses defined are given out
to dynamic clients again (A side effect of mixing static and dynamic range). Then I simply tried giving the lease the “reserved” state, which also worked fine, but the reserved lease does not appear in dhcpd.leases file after a while an so I guess it is not
persistently stored? Whats the difference between reserved and static ?
I just want a single IP range where leases can be dynamically made static and keep that IP… Any ideas?


create a zone and allocate a dynamic range. once your clients receive a lease you can create a static entry for them. BUT,.. you must change the range for dynamic. So that you don't have statics in the middle of your dynamic range.


#FHS-1541 zone1
subnet 10.154.0.0 netmask 255.255.0.0 {
option routers 10.154.1.1;
option domain-name-servers 10.154.1.2;
range 10.154.2.1 10.154.2.254;
}

## static hosts
############
#### noc clients
include "/usr/local/etc/154_clients";

#### 154_clients
group {
option routers 10.154.1.1;
option domain-name-servers 10.154.1.21, 10.154.1.2;

host recon77 {
fixed-address 10.154.1.77;ia
hardware ethernet 00:25:bc:df:b1:4c;
}
host FooBookPro {
fixed-address 10.154.1.99;
hardware ethernet 00:17:f2:d1:ff:f6;
}
}#close group


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