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01-12-2012 02:28 AM
01-12-2012 02:28 AM
3com Baseline 2928 - 3com superstack 4500: unstable fiber connectivity
Hello everyone
I have a 3com Baseline Switch 2928 that's connected over fiber to a 3com superstack 4500. The fiber is singlemode and has the suitable SFP modules on both switches.
The switches (and connected devices) have working networking but it's very unstable. Browsing SMB shares is workable but has lots of 'waiting intervals': sometimes opening a folder takes 20 seconds after which everything is back ok. All devices on the server side have very stable networking, so the issue must be with the baseline 2928 or the fiber SFP module.
Are there any logs I can check or other things to see what could be the problem? The syslog on the 2928 shows no problems. I've tried all the basic things such as change the SFP port, different cables, various OS's, etc, etc.
The fiber should be ok, I have detailed OTDR measurements showing ok splices and connectors.
Kind regards