DHCP / Cisco IPhelper - Problem to get valid IP-Adresses

Simon Hobson dhcp1 at thehobsons.co.uk
Thu Jul 31 18:59:14 UTC 2008

Luis Fernando Lacayo wrote:

>a few weeks ago I posted a message about a problem that I 
>encountered.  I had a two server dhcp redundant/failover setup and I 
>deleted the dhcp.leases(~) files as I did not have enough room to 
>save them. ( I know a very stupid thing to do. no excuses).
>I have been running on a single (with none failover) dhcp server and 
>want to return to a two server configuration. I am not doing DDNS, 
>so I don't have to worry about that now.  The problem is that when I 
>restart both servers they STOP offering IP addresses, and I see a 
>lot of recovering messages on the logs.

First thing to do is NOT to hijack threads - your query is not 
related to "DHCP / Cisco IPhelper - Problem to get valid IP-Adresses" 
! It would be best if you went back and found a message in your own 
earlier thread and replied to that - that way your 'sort of related' 
query would get threaded with it.

Or simply start a new thread - it's not hard.

In reply to your query - first step in any situation like this is to 
look in the logs, they are often informative of the problem.

So what do your logs say 1) when you start the servers, and 2) when a 
client is attempting to get an address.

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