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тАО06-07-2004 07:52 AM
тАО06-07-2004 07:52 AM
Ping problem in certain VLANs
Any clues anyone? Tips on troubleshooting?
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тАО06-07-2004 11:17 PM
тАО06-07-2004 11:17 PM
Re: Ping problem in certain VLANs
Hope that helps - or at least point you in the right direction....
///GG
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тАО06-08-2004 12:03 AM
тАО06-08-2004 12:03 AM
Re: Ping problem in certain VLANs
I use 1000BaseLX all over. Traffic <20Mbps. No error counters. No link-loss. No trunks. Only L2, ~30Vlans many in which only 2 hosts (/30).
Could seem like a ARP update /MAC issue. It's just so random.
Have involved HP Tech - will keep you posted.
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тАО06-14-2004 06:44 PM
тАО06-14-2004 06:44 PM
Re: Ping problem in certain VLANs
Check the fibre patch panels. If you have 62.5 micron core fibre you should have 62.5 micron pigtails and 62.5 micron patchcords. If you have 50 micron core fibre you should have 50 micron pigtails and 50 micron patchcords.
Don't laugh: I inherited a few 62.5 micron fibre cables having 50 micron pigtails; when using 62.5 micron patchcords I could not get anywhere, and when usin 50 micron patchcords I got randomly disconnected - just like you say.
2. About 1000LX transceivers, on multimode fibre (both 50 and 62.5 micron):
- don't use them for distances of a few tens of meters (I use them over 100 meters)
- you can go to maximum 300 meters if you don't use Mode Conditioning Patchcords (MCP).
- you can go to maximum 550 meters if you use MCP.
- if you use MCP: make sure you use one at each end, and make sure the core diameter of the MCP matches the one for the fibre cable and pigtails.
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тАО06-14-2004 08:52 PM
тАО06-14-2004 08:52 PM
Re: Ping problem in certain VLANs
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тАО06-15-2004 09:27 AM
тАО06-15-2004 09:27 AM