[c-nsp] SM SFP over MM cable

[Arne Svennevik]

Yes, a normal single mode SFP (GLC-LH-SM) works with both SM and MM fiber.
MM is limited to 300 meters (greater distances may be possible with a
mode-conditioning patch cord). Have a look at GLC-LH-SM in table 6 at
http://www.cisco.com/en/US/docs/routers/7200/install_and_upgrade/gbic_sfp_mo
dules_install/5067g.html#wp34124 for more info.


Regards,
Arne Svennevik


-----Original Message-----
From: cisco-nsp-bounces at puck.nether.net
[mailto:cisco-nsp-bounces at puck.nether.net] On Behalf Of Pavel Skovajsa
Sent: Wednesday, November 26, 2008 11:53 AM
To: cisco-nsp at puck.nether.net
Subject: [c-nsp] SM SFP over MM cable

Hello,

I have heard stories that normal LX single mode SFP works fine over
any MM fiber. Is that true? Does it have any distance limitation? Is
there any doc I can read so that I understand what are the various
possibilities to mix/match various SM/MM SFPs etc.

Regards,
Pavel Skovajsa
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