LX uses 1300nm laser, whereas SX uses 850 nm laser. You can not work
together. You will need either two SX or two LX GBICs.
Look at
http://www.cisco.com/univercd/cc/td/doc/product/lan/cat5000/cnfg_nts/etherne
t/5399_01.htm for some info on Cisco GBICs, cable lengths supported,
potential conditioning needed, etc.
Johan
""Scott Donoho"" wrote in message
[EMAIL PROTECTED]">news:[EMAIL PROTECTED]...
> We will soon have a lab setup that has two core routers that have GigE
> LX(long haul) interfaces. We need to test connectivity between the two
> routers with a switch in between. The problem is the switch we have has
GigE
> SX(not LX) interfaces. The physical cable distance will be very
short(under
> 400m). My question: will the switch have to have the LX interfaces in
order
> for this to work even at relatively short distances? or will the SX
> interfaces work as well. I'm not sure what the difference is between SX
and
> LX is at the physical layer. TIA,
>
> Scott
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