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Performance Monitor & Redirector

By on-site ·
Scenario: (2) NT 4.0 WS get disconnected from network resources randomly wait a couple of minutes and they are back on ? We have done continuity checks on cables nics and ports ? replaced all line suppression reapplied service pack 6.a and even hardcoded IP address removing from DHCP pool. ? Still no avail ?

We began looking at alert monitor in perf mon in NT ? Both on server and on work station. We used server disconnect and server reconnect params. Each > 1. All began to instantly show disconnects and no reconnects. We rebooted BDC and PDC reapplied perf mon and voila no disconnects on servers ? however, WS still receiving disconnects. And NT WS still experiencing problems w/ disconnects ? What exactly is the Parameter in perf mon REDIRECTOR Category Server Disconnects and Server Reconnects telling us ! Gremlin in the system ! Any IDEAS ? Any resource that can explain (in detail) the perf monitor items and their meaning ?

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Performance Monitor & Redirector

by tmaclennan In reply to Performance Monitor & Red ...

I don't mean to offend with an answer that may or may not seem rudimentary to you, because you are obviously frustrated to offer such a sizeable percentage of your points. Frequent disconnects for me have in the past happened when I have left the workstation and switch to autonegotiate port speed and duplexing. Have you locked down ports and nics to the same speed and duplex? If not, this may be the root cause.

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Performance Monitor & Redirector

by on-site In reply to Performance Monitor & Red ...

This appears to be the one ! All is well that ends well !!! Thanks for the help

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Performance Monitor & Redirector

by dmiles In reply to Performance Monitor & Red ...

This info may be of interest which are web sites that contains info on performance monitor
1)www.microsoft.com
Ref:Microsoft Internet Information Server
2)http://adminsvr.usask.ca
Ref:Performance Monitor Details (you can locate by using search
3)PFM:Read Performance Monitor

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Performance Monitor & Redirector

by on-site In reply to Performance Monitor & Red ...

Poster rated this answer

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Performance Monitor & Redirector

by Conrad In reply to Performance Monitor & Red ...

This is from MS site: http://www.microsoft.com/technet/winnt/winntas/manuals/concept/xcp08.asp

The Redirector (Rdr.sys), Server (Srv.sys), and protocols (NetBEUI and TCP/IP if installed) each generate a set of statistics that appear as Performance Monitor counters. (Other protocols can also generate counters.) Abnormal network counter values often indicate problems with a server's memory, processor, or disks. For that reason, the best approach to monitoring a server is to watch network counters in conjunction with previously discussed counters, such as % Processor Time, % Disk Time, and Pages/sec....To analyze these statistics for your network segment, install the Network Monitor Agent. The Network Monitor Agent collects statistics fromthe computer's network adapter card by putting it in promiscuous mode, a state in which the network adapter card can be directed by a device driver to pass on to the operating system all the frames that pass over the network. To determine if your card supports promiscuous mode, see the documentation that accompanies the card. More about NW Monitor Agent: http://www.microsoft.com/technet/winnt/Winntas/manuals/concept/xcp10.asp

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Performance Monitor & Redirector

by on-site In reply to Performance Monitor & Red ...

Good insight - been there done that ! As it turns out it is the autonegotiate as mentioned by the first reply - both the port and the nic were set to auto negotiate and boy were they ! Kingston 110tx

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Performance Monitor & Redirector

by bill.parks In reply to Performance Monitor & Red ...

The counters you mentioned are telling you absolutely nothing!!! Disconnects are completely normal and usually occur at 15 m of idle remote activity.
One of the Perf counters you might want to watch is the Redirector-Server Sessions Hung, and see if you are getting anything over 1. This usually clarifies connectivity issues. In conjunction you may want to monitor these counters:
Redirector-Network Errors/sec = This will tell you if these stations are having communication difficulties.
Redirector-Current Commands = If this is more than 2, there is a bottle neck at the server or on the segment connecting it.
System-Total Interrupt Time= If this is pacing your System-%Processor Time counter, NIC is on its last leg.
There are a number of PerfMon books and guides out there to assist you. Give the following url a shot http://www.microsoft.com/TechNet/winnt/perform.asp. It is a great start.
BTW, I agree with the first post, try setting your speed and duplex before diving head first into the OS stuff. It may just be infrastructure related. Have you tried moving those machines to a station you know is good???

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Performance Monitor & Redirector

by on-site In reply to Performance Monitor & Red ...

Your take on the server disconnects is of the mark - but they are common. By locking the prot and the nic to a defined speed the disconnects go away ! Thank you for the ref URL's

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Performance Monitor & Redirector

by on-site In reply to Performance Monitor & Red ...

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