can you connect the SFP - 10 G - SR low-support to SFP 1000BASE-SX?

Hello world:

today I use the SFP + 'SFP - 10 G - SR' in Cisco Catalyst 2960 S-48TD-L connect to the SFP 1000BASE-SX to 6509 WS - X 6724-SFP module.

the port setting is master, but they do not work, even the light don't flush. Then, I also use the SFP 1000BASE-SX to replace SFP + SFP - 10 G - SR in

2960 S-48TD-L, then they cany working.

I look to the top of the cisco data sheet, there is no roadmap to satament database 10G sfp + can't low support 1 G sfp. So, I want to confirm the problem.

Otherwise, the 10 FPS + can only use for 10G SFP +; can't go down the suport 1 G SFP.

This means: If you want to use the 10 G SFP + the other old device also need to replace.

Thank you ~ for your help!

Hi Marvin,.

I found this conversation today, because I'm looking for an answer on a question similar to the question that Jerry asked, at the opening of this discussion.

So my problem is this. In a certain place, I need two 10 GB and a connection of 1 GB on an optical cable. To cut costs, I tried with WS-C2960X-48FPD-L, but because it contains only two ports of SFP +, I tried with two WS-C2960X-24PD-L which will be connected with the battery modules.

Then, having two WS-C2960X-24PD-L, I have 2 x 2 ports SFP + 1 GB. There are two open questions:

1. can I put 1 GB transmitter SFP module SFP + port (that I have a connection of 1 GB at remote site)?

2. can I use two switches to 24 ports mentioned 2960, in a way that I use one of them for the two connections of 10 GB (using ports SFP + 10 GB connection) and the second member of the battery so that we (2 available) port SFP + is used to 1 GB SFP connection (using the SFP port + as mentioned in question 1)?

I'm not sure if your previous statement covers my questions, because it is not clear if the 1 GB SFP transceiver can be inserted in the port SFP + WS - C2960X - 24PD - L (or any other a port SFP switch +).

Tags: Cisco Network

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