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Dropping of network connection on Linux system



Thanks for your reply, Jerry.
I've explained my situation in another reply.
However, noticed that your advice is about tweaking the dates to sync the
client and server.
I'll try that and see how, though it might take a few days to detect if it
succeeds cos in usual case, the connection is intact and only dropped after
a few days :)



----- Original Message -----
From: "Jerry Feldman" <gaf at blu.org>
To: "qx" <zoqix at yahoo.com>
Cc: <discuss at Blu.Org>
Sent: Thursday, October 25, 2001 1:54 AM
Subject: Re: Dropping of network connection on Linux system


> I'm going to take a stab at this one also based on some of the problems I
> had with DHCP when I was running older versions of SuSE.
> First, Linux will not drop a connection with a static IP unless either
there
> is a hardware problem, or if you have a PC card and shake it lose.
> These are not your problem, but I wanted to isolate the problem to dhcp.
>
> Next, your DHCP Client should log its activities. It also should be
running
> as a daemon. There are several DHCP clients and the configurations are
> a bit different.
>
> Lets look at some scenarios:
> First, you establish the initial connection and the DHCP client exits.
This
> is unlikely.
> Second, your lease expires. The lease is established by the DHCP
> server, and can be short (minutes) or long (months). The dhcp client tries
> unsuccessfully to reacquire the lease. Result, your IP address is
> dropped.
>
> You really need to look at your logs on both the client and the server
> side. I suspect that your dhcp client is failing to reacquire the lease.
In
> addition to the logs, dhcp also maintains a database (depends on the
> client, but on SuSE is was somewhere like /var/state/dhcpclient. I found
> that there was a bug in the client that would cause it to fail to acquire
a
> lease when the dates were out of sync. I went into the database and
> tweaked the dates and it worked. (Note that the last couple of releases of
> SuSE have worked flawlessly). I currently use SuSE 7.1, and my laptop
> acquires a lease at Compaq, Northeastern U and home with no problem.
> Jerry Feldman <gaf at blu.org>
> Associate Director
> Boston Linux and Unix user group
> http://www.blu.org
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