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Forum Discussion
S3300-52X-PoE+ Change SFP+ port speeds to go into regular SFP
We have a secondary switch (GS728TPV2) that we would like to connect to our primary switch (S3300-52X-PoE+) through SFP but are running into issues with what I believe to be the differences in speed. I was hoping to be able to downgrade the connection from the S3300 to regular SFP through the IP interface but get an error every time I try to apply the change.
I have tried to set it to the specific speed I want as well as just everything to Auto, but still do not get a connection (and sometimes receive an error stating it could not apply).
Any help would be appreciated, thank you.
14 Replies
Using fiber modules? Please understand that fiber does not know anything similar to the automatic link speed negotiation we know from RJ45 copper ports on 10GbE, 1 GbE and Fast Ethernet. It's the fiber module defining the link speed. To establish a GbE fiber link between a switch port with SFP+ and a switch with an SFP port, you need the same spec'ed fiber link modules.
When you say modules, are you talking about the physical modules with in the switches?
I am using a Netgear AXC761-1000S cable. From my reading, I have to use a cable that has an SFP transceiver on one end, and an SFP+ transceiver on the other to make the connection.
The Netgear AXC761-1000S cable is a pure passive 1m long SFP+ Direct Attach Cable. With both ends plugged into a compatible SFP+ 10G port, a 10 Gigabit link speed is expected in both directions.
Not sure on how I should understand the problem description - this is possibly what you would expect between the S3300-52X-PoE and the other GS728TPV2 switch?
The only thing coming into my mind is that not all SFP+ devices can be operated on such SFP+ DAC connections.
Just for my curiosity, the SFP+ port in the S3300 is configured as a general use Ethernet, not as a stacking port?
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