networking issues on 2.2kernel
hi guys having an odd issue with 2.2kernel custom build linux, hoping you can help.
we have three mobile computers that move around between five different network points.
each one has a static set IP and needs to talk to a fixed linux box (also 2.2kernel) to retrieve data. this box is on the other side of a firewall that i am assured is set up to allow access to our linux box.
the connection is via ethernet cable into wall sockets which i am assured are correctly patched through to connect to our fixed box on the other side of the firewall.
we can only connect and retrieve data intermittently.
this seems more apparent when the machines have remained turned on and have moved from one room to another.
speaking to the IT team onsite, it is clear that new networking hardware is the cause (they assure me it isnt though) as prior to installing new firewalls and enforcing much stricter traffic flow, everything worked perfectly.
i suspect there is a network table somewhere that isnt being updated when the machines are moving from room to room, causing us to fail to connect with our linux box.
the newer system has a 2.4 kernel and this communicates fine all the time, the problems are only on the three 2.2 kernel systems.
has anyone got any ideas on how to further diagnose and remedy the issue?
i cant update to a newer kernel.
thanks for your help in advance