ping problems

[vu pham]

On Mon, 2007-10-01 at 07:05 +1000, Keith Antoine wrote:
> Have a problem that has reared its head on a small network at Care 
> Services wwere I do voluntary work a few hours a week.
> A call in medical alert system with a server and 2 workstations setup 
> with NT4, not a choice we like, however until we can
> afford to change its all we have. The medical alert software is by 
> Tunstall and called Vision. Workstation 1 one fell over about a
> week ago. We got the drive re-installed but it would not work, turned 
> out to be the network would not see the database on the server.
> 
> Have replaced the software and the card still no go. The workstation 
> will NOT ping the server but will ping workstation 2: Server will ping
> workstation 1 and 2; workststion 2 will ping 1. Now I am stumped.
> 
> There is a hub in the system and a big box called a LIMBOX which handles 
> the calls. I am not NT4 savvy either.
> 
> Yes we are in the throws of changing to 2003 server xp and Patriot 
> software. No software available to work on linux unfortuneately.

Keith,

I would try the following:

1. Swap the cable of workstation 1 and 2, only at the end of the
workstations, and see if there is any difference in ping patterns
between the three systems.

2. If not, do you have a cross-over cable over there ? I would like to
connect the workstion1 directly to the server to see if they can ping
each other ?

3. ( may be step 0 ) check the ARP table on each system and see if they
match the MACs of those systems.

Maybe the output of these steps may give some indication. Just my $.02.


Vu