Connecting 2 switches with Fiber

Answered Question
Mar 31st, 2010

Hi,

I have a basic question regarding two 3750G switches I would like to connect using fiber.

I have the 2 Twingig modules converter available for each switch.

I need to know my requirement to connect these two switch by their uplink.

I have already on my list:

1 SFP module (GLC-SX-MM) the question is how many SFP modules will I need to connect these 2 switches as each switch has 2 Twingig port (hence 4 SFP ports available). since each Twing Gig port has 2 SFP module.should I use 1 Twin Gig module and ordre 2 SFP modules (GLC-SX-MM) for each switch (hence 4 GLC-SX-MM )for the connection to work ?

Thanks for your guidance and related documentation you'll be giving.

I have this problem too.
0 votes
Correct Answer by Tom Randstrom about 6 years 9 months ago

According to the following Cisco document, the Twingig converter module can be used with up to 2 SFPs; which would seem to indicate the use of 1 SFP in a Twingig converter module is supported.

<http://www.cisco.com/en/US/docs/switches/lan/catalyst3750e_3560e/hardware/install/notes/1757202.html>

You could install 2 SFPs per switch and run EtherChannel to gain additional uplink bandwidth.

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Correct Answer
Tom Randstrom Wed, 03/31/2010 - 13:14

According to the following Cisco document, the Twingig converter module can be used with up to 2 SFPs; which would seem to indicate the use of 1 SFP in a Twingig converter module is supported.

<http://www.cisco.com/en/US/docs/switches/lan/catalyst3750e_3560e/hardware/install/notes/1757202.html>

You could install 2 SFPs per switch and run EtherChannel to gain additional uplink bandwidth.

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