Extracting agent.circuit-id and compare to dhcp leases!
Frank Bulk
frnkblk at iname.com
Sat Jan 19 04:59:08 UTC 2008
I think most people would recommend generating an include file from your
database once an hour or so. Then it should be possible to do what you
describe.
Frank
_____
From: dhcp-users-bounce at isc.org [mailto:dhcp-users-bounce at isc.org] On Behalf
Of Mattias Ellerot
Sent: Friday, January 18, 2008 8:13 AM
To: 'dhcp-users at isc.org'
Subject: Extracting agent.circuit-id and compare to dhcp leases!
Hi!
Now when I managed to extract agent.circuit-id I wan't it to compare the
agent.circuit-id with a list that defines what IP the customer should have.
To begin with it would be enough with a text file but preferable would be a
connection to a mysql database.
For instance have we a provisioning system that defines the agent.circuit-id
on the customer port and we are able to set a specific IP for it also. I'm
waiting for the table indexes so I know what I need to pick out from the db,
but for now I need to see that the DHCP server is able to set a static ip
through DHCP.
Here's the test config from dhcpd.conf
log-facility local7;
ddns-update-style none;
authoritative;
option domain-name "bbtnet.se";
option domain-name-servers 77.110.38.205, 85.11.1.11;
default-lease-time 28800;
max-lease-time 28800;
# Privat kunder - Tranemo
subnet 77.110.36.0 netmask 255.255.255.0 {
option domain-name "pp.tran.bbtnet.se";
option subnet-mask 255.255.255.0;
option routers 77.110.36.1;
log ( info, concat( "Lease for ", binary-to-ascii (10, 8, ".",
leased-address), " is allocated to customer: ", option agent.circuit-id));
allow client-updates;
ddns-updates off;
default-lease-time 28800;
range 77.110.36.2 77.110.36.254;
}
Another thing, if the customer number is not in the list it shouldn't get an
IP.
With my best regards
Mattias Ellerot
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