I recently checked out one of our networks to find that our switches with 1000BaseSX uplinks were connected to, and functioning with, our
My question is: how is this working if one side is gigabit and the other is 100 mbit? (please include gory details)
Thanks
??? Are you *very* sure about that? 100BaseFX & 1000BaseSX shouldn't even be able to see each other, much less talk to each other!
And I do mean 'see' literally: 100BaseFX uses a wavelength of 1300 nm, and 1000BaseSX uses 850 nm. They shouldn't even detect each others' presence.
On that front you'd have more luck with -LX, which also uses 1300 nm, but even then I have never heard of a 1000BaseLX PHY that does 100BaseFX as a fallback...
Switch make & model? Module types? Inquiring minds want to know :-).
Regards,
Marco.
I have heard rumours about GBICs with 100 base-FX fibre interfaces - maybe that is what is in the switch?
That would make sense. A quick Google throws up the Allied Telesyn AT-A45/SC as a 100BaseFX GBIC, so yes, they do exist. Didn't know that.
Still, I'd like to know what his setup is :-)
Regards,
Marco.
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