Simon Hobson dhcp1 at thehobsons.co.uk
Mon Sep 25 07:10:46 UTC 2006

Jim Pazarena wrote:

>I set up a relay agent for one of my internet communities so as to
>centralize my dhcp assignments. Previously I had a small computer
>in that community running a stand alone dhcpd server.
>Since I set the relay agent up, all of my customers renew every ten minutes.
>I have in my dhcpd conf the following lines:
>min-lease-time 43200; # 12 hour
>max-lease-time 86400; # 1 day
>default-lease-time 86400; # 1 day
>but still this community of users renews every 10 minutes.
>the communication goes out from one Telco cisco router into the Telco
>network and back to my main server via a Telco cisco router.

You don't provide nearly enough details.

Do you have IP routing between clients and server ? Without any NAT ? 
Failover ?

What is the relay config ?

What is the server config ?

Are you sure there's no dhcp server still running at the remote site ?

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