DHCP Server not sending offers!

[Sten Carlsen]

On 18/07/14 13:48, Eugène Ngontang wrote:
> @Sten, I saw discover whiwh do not receive offers on client and server side.
The point here is that a lot of network issues are ruled out when the
unanswered DISCOVER is in the logs.

I am not sure where to go from here, others will know.

> 
> The clients and server are in the same LAN, nothing between them.
> 
> And I said when I restart the server, it begins answer discovers.
> 
> Regards,
> Eugène NG
> 
> 
> 2014-07-18 13:42 GMT+02:00 Sten Carlsen <stenc at s-carlsen.dk
> <mailto:stenc at s-carlsen.dk>>:
> 
> 
> 
>     On 18/07/14 13:25, Eugène Ngontang wrote:
>     > Hi all,
>     >
>     > I know what you mean here. I know a dhcp server is not oblige to be in
>     > the same subnet as clients, but in my case it should and is, because,
>     > for our architecture.
>     >
>     > @Daniel, I know the dhclient FSA functionment, I also know how to
>     check
>     > log messagesw on linux, I just don't see missing offers, which is
>     strange.
>     The question I really saw was this:
>     Do you see the DISCOVER that does not get an answer - in the logs?
> 
>     The question is if it makes it's way into the server or is stopped
>     before reaching the server?
> 
> 
>     >
>     > What I would like to mention is that things are not working as they
>     > should, and I want to understand why.
>     >
>     > *Once again, it's not everytime that the server behaves like this, I
>     > said sometimes it stops sending offers, and when I restart the service
>     > it works fine, without any modification on the configuration. Dis read
>     > well my first post?*
>     > *
>     > *
>     > It's not simple network architure or configuration issue, I would have
>     > detect. I want to debug dhcpd, can you help me please? Where can I
>     look
>     > again to locate the origin of the problem?
>     > *
>     > *
>     > Thanks a lot.
>     >
>     > Regards,
>     > Eugène NG
>     >
>     >
>     > 2014-07-18 13:16 GMT+02:00 Simon Hobson <dhcp1 at thehobsons.co.uk
>     <mailto:dhcp1 at thehobsons.co.uk>
>     > <mailto:dhcp1 at thehobsons.co.uk <mailto:dhcp1 at thehobsons.co.uk>>>:
>     >
>     >     Eugène Ngontang <sympavali at gmail.com
>     <mailto:sympavali at gmail.com> <mailto:sympavali at gmail.com
>     <mailto:sympavali at gmail.com>>>
>     >     wrote:
>     >
>     >     > If it was in the same subnet the clients could normaly nerver
>     >     communicate and get IP addresses from the server.
>     >
>     >     I assume you meant to write "... was *not* in the same subnet
>     ..." ?
>     >     If so, then that's not correct. You can have a server in a
>     different
>     >     network to the clients - it just needs a relay agent in the
>     network
>     >     local to the clients AND the ability to route unicast packets
>     >     between clients and server.
>     >
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>     >
>     >
>     >
>     > --
>     > ngonta_e at epitech.net <mailto:ngonta_e at epitech.net>
>     <mailto:ngonta_e at epitech.net <mailto:ngonta_e at epitech.net>>
>     > sympavali at gmail.com <mailto:sympavali at gmail.com>
>     <mailto:sympavali at gmail.com <mailto:sympavali at gmail.com>>
>     > ------------------------------------------------------------
>     > /*Aux hommes il faut un chef, et au*//* chef il faut des hommes!
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>     >
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> 
>     --
>     Best regards
> 
>     Sten Carlsen
> 
>     No improvements come from shouting:
> 
>            "MALE BOVINE MANURE!!!"
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> 
> 
> 
> -- 
> ngonta_e at epitech.net <mailto:ngonta_e at epitech.net>
> sympavali at gmail.com <mailto:sympavali at gmail.com>
> ------------------------------------------------------------
> /*Aux hommes il faut un chef, et au*//* chef il faut des hommes!
> L'habit ne fait pas le moine, mais lorsqu'on te voit on te juge!
> */
> 
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-- 
Best regards

Sten Carlsen

No improvements come from shouting:

       "MALE BOVINE MANURE!!!"