I've been trying to nail down issues with remote sites and mapped drives for a week or so now. Posting here to see if anyone can correlate these issues and/or provide me with additional methods of troubleshooting.
Several (Windows 7) users on a WAAS'd network (Wave274->Wave574) all running the latest revision of firmware/images: Cisco Wide Area Application Services Software Release 4.1.7 (build b11 May 14 2010) Version: oe574-184.108.40.206
The problem I am having is users are experiencing delays accessing mapped drives. Files opening are delayed sporadically and the actual browsing of the drives as well. I've done the following on the remote server which is running a fully patched SBS 2008 instance:
-Turned off AV software and removed firewall drivers from stack.
-Disabled IPV6 interface.
-Turned off Base Filtering Engine and Windows Firewall.
-Disable/Remove any TCP offloading or software acceleration options on the NIC (It's vmware anyways).
The server produces dozens of "SRV" events (ID#2012) which indicate a connection terminating prematurely on the remote side.
On the WAAS side, I have combed every log file looking for clues as to why this is happening.
-Connections are being optimized by the CIFS AO (TCDL) and not pushed down to some other generic optimization engine. (OK)
-CIFS Digital Signing in Windows 7 is not causing issues or the above problem. (OK)
-Machine I’m dealing with current CIFS optimized session has no retransmissions or collisions (data lost inbetween) (OK)
-The total latency for NT_CREATE_ANDX (per CIFS command) latency via “show statistics cifs requests”. Also the response time for all commands and finally the average remote command which was >200ms.
Statistics gathering period: hours: 362 minutes: 36 seconds: 4 ms: 495
ALL_COMMANDS total: 3796803 remote: 113832 async: 3143835 avg local: 7.36ms avg
NT_CREATE_ANDX total: 12923 remote: 11737 async: 0 avg local: 1.452ms avg remote
-Verified network connectivity with the server and general application availability.
-150 other servers running on this cluster most are built from same templates using same AV, several have WAAS and not reported issues.
Anyone have similar issues?? Ideas for me to gather more data pointing me away from WAAS?