Core Fiber????

[Ibrahim Jamil]

Hi Folks!

i m doing Some Project,okay so if I Want to connectec two switch to our CORE , in fiber cable how many core do i need?is it 4 core (2 each one Tx and one Rx)

is the multimode goes up to 550mtr

[Tom Randstrom]

Each link between switches will require two fibers (cores), one for transmit (Tx) and one for receive (Rx); two links would require 4 fibers (cores); unless WDM is used (another story).

Link distances varies by interface speed, fiber type and transceiver specifications.  For Gigabit Ethernet links, a 1000Base-SX transceiver module will support up to 1000 meters over OM3 or OM4 rated multimode fiber (MMF); less distance on OM1 & OM2 rated MMF.

Example distances can be found in the transceiver data sheets... GE SFP example below:

http://www.cisco.com/en/US/prod/collateral/modules/ps5455/ps6577/product_data_sheet0900aecd8033f885.html

Additional fiber transceiver information can be found on the following document.

https://supportforums.cisco.com/docs/DOC-13721

[Ibrahim Jamil]

Hi Tom

Exelent reply, can u help me from the Fiber Point of view , like SC,LC,Fiber Patch panel ,fiber Coupler, Type of Fiber Patch cord either for 1 gb , 10gb,40 gb, what type from the GLC-SX-SM TO THE coupler of thr fiber patch pannel i wanna use

[Tom Randstrom]

I would recommend looking at one of Cisco's partners,

Panduit,<>as

they have the fiber interconnect products you are looking for. There

are

many equipment vendors... work with a trusted VAR or distributor Many of

your choices will depend on your network's layout/design as well as personal

preferences for fiber patching.

On Fri, Mar 4, 2011 at 4:42 PM, ibrahim.jamil <

[Ibrahim Jamil]

Hi Tom

where to use LC/SC  ....LC/LC.........SC/SC fiber patch cord either for SM or MM ?

[Tom Randstrom]

Ibrahim,

The decision on which connector to use will be based on the equipment's optical interfaces and your patch panel.  For equipment using pluggable optics, the following lists the connector styles used

Pluggable optics

SFP = LC style

XFP = LC style

GBIC = SC style

X2 = SC style

Xenpak = SC style

Patch panels may have either LC or SC style connectors and some will use MTP/MPO (multiple fiber cores per connector). 

Your installation may require an LC on one end of the fiber jumper cable and SC on the other; or LC to LC or SC to SC, etc.. Each connector style can be ordered for either singlemode or multimode fiber. 

The fiber type used in the network will depend on the links speed and length.  It is important to look to the future when installing backbone cables in hard to access areas, so you don't have to install new cables for future network needs.

I've attached a fiber design guide from Comm/Scope.  It contains a lot of information, but highlights some of the future planning.

I am not sure if I am answering your questions properly.

Good luck.

Tom

[Ibrahim Jamil]

Thanks Tom

Your Answers are Extremly Powerfull and informative

Thanks