SFP TO FIBER COVERTER CONNECTION

[ashley.1232]

Hello ,

Iam trying to configure the following scenario,

i have a cisco WS-C3560X-48T-S , with 12.2(58r)SE1 ios , when iam trying to have the following connection

CISCO 3560 SW with SFP port access vlan CAM------Fiber Cable--------->Fiber Converter-------UTP CABLE---------CCTV CAM.

Iam going with this scenario unfortunately , the SFP PORT is not going up.

Please can somebody help me to see if this scenario applicable.

Thank you.. 

[Philip D'Ath]

Receive and transmit fibres crossed over?

Does the fibre media convert have the same specs as the SFP?  Both 1000baseX for example.

[ashley.1232]

Hello Philip,

Yeah already crossed over the TX RX of the fiber cables, and still the same , i have the SFP 1000Base X, dont know whats my FIber converter speed, but its written on the fober converter 10/100 Ethernet , there is no speed discription for the fiber interface in the fiber converter.

But its still the speed is auto on the switch port , does it make any conflict?

Thank you..

[Philip D'Ath · Accepted solution]

Fibre does not support auto-negotiation.

If you have a 100Mb/s fibre convert you need a 100Mb/s SFP.  It sounds like you need to get a 1000BaseSX fibre media converter.

[ashley.1232]

Hello Philips,

Yeah seems its a speed issue, but the weird thing is that , iam not able to change the speed configuration under the port having the SFP inserted in it.

when you put speed you will get the following :-

SW(config-if)#spe
SW(config-if)#speed ?
nonegotiate Do not negotiate speed

SW(config-if)#speed

Thank you..

[Philip D'Ath]

Fibre doesn't support speed negotiation.  You have to buy the SFP/Media converter for the specific speed you want to run.

As the media converter is cheaper, I would replace that with a 1000BaseSX unit.

[ashley.1232]

Thank you Philip For you Help :)