Fundamental issues of SFP for Small Business Switches

Hi all

Just for fun, I would switch to fiber, running the trunk ports between my two Cisco SG300 lab switches but I'm new to the media.

In looking at the options, I thought that MM (MGBSX1) is the way to go, but the cost of the 'Official' FPS an arm and a leg. (don't forget, he is my laboratory, not a production environment).

I have a few newbie questions and forgive if this has been answered a hundred times, but I was not able to find in the search.

  1. What I really need to use Cisco brand trancievers? I've seen other than Cisco 1000BASE-SX SFP on ebay for a tenth of the cost. Given that, Yes, the quality may or may not be the same.
  2. Is MGBSX1 way to go? Switches are in different rooms, so distance is not a problem, my choice was based on cost trancievers and media.
  3. SFP ports are valued only Gigabit, but I saw a higher number variety quoted. Is this a limitation of the switch itself, the protocol used, or the transmission media?

Again sorry if these are questions of newb and thanks in advance!

Lee

1. should I really use Cisco brand trancievers? I've seen other than Cisco 1000BASE-SX SFP on ebay for a tenth of the cost. Given that, Yes, the quality may or may not be the same.

According to the Quick Start Guide SG300 ' SFP ports are compatible with Cisco modules MGBT1, MGBSX1, MGBLH1, MGBLX1, MGBBX1, MFELX1, MFELX1, and MFEBX1, in addition to the modules from other brands. "

2. is MGBSX1 way to go? Switches are in different rooms, so distance is not a problem, my choice was based on cost trancievers and media.

Choose a type of SFP based on the length of the links and the type of available fiber.  Small Business card SFP provides the information you need.  The MGBSX1 is probably a good choice, low-cost, up to length of 550 meters over multimode fiber link.

3 ports SFP are valued only Gigabit, but I saw a higher number variety quoted. Is this a limitation of the switch itself, the protocol used, or the transmission media?

Each switch is designed to support specific port speeds, based on the application of switches designed into the network.  Optical transceiver modules do not support different speeds (like many electric ports).  Instead, the switch port is compatible, the transmitter/receiver module can be swapped to change speeds.  Style SFP modules are available at 100 Mbps and 1Gpbs; Modules of SFP + for 10 Gbit/s; higher speeds have new form factors.  You can see a lot of styles of optical Modules on the page Web Cisco transceiver.

Good luck!

Tags: Cisco Network

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