What causes “Reconnections made” statistics on network?

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A client site is having hard-to-diagnose issues related to their network. While working on the problem, I ran the command “net statistics workstation” on one of the computers. I got the following data covering approximately a week of activity:

Bytes received                               23791085485
Server Message Blocks (SMBs) received        22410645
Bytes transmitted                            8962989188
Server Message Blocks (SMBs) transmitted     22410618
Read operations                              4481436
Write operations                             2275694
Raw reads denied                             0
Raw writes denied                            0

Network errors                               0
Connections made                             629
Reconnections made                           990560
Server disconnects                           40    

Sessions started                             0
Hung sessions                                0
Failed sessions                              0
Failed operations                            22
Use count                                    1212
Failed use count                             198

I’m thinking the very large number of “Reconnections made” (almost a million of them, so almost 2 per second for a week) should be telling me something about what’s going on with this network. What precisely does that number represent and what does it indicate? How about the other numbers?

Thanks for any help!

Solution :

You can use the Redirector object in perfmon to get statistics about the Workstation service. The descriptions of each counter in perfmon is a good place to start when you have no idea what they mean.

Directly from perfmon, here is the Microsoft description of “Reconnections Made” which is labelled as “Server Reconnects” in perfmon:

Server Reconnects counts the number of times your Redirector has had
to reconnect to a server in order to complete a new active request.
You can be disconnected by the Server if you remain inactive for too
long. Locally even if all your remote files are closed, the
Redirector will keep your connections intact for (nominally) ten
minutes. Such inactive connections are called Dormant Connections.
Reconnecting is expensive in time.

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