Problem getting SFPs to work

[fredrikhan]

I got two C1300-12XS which i try to connect to each other via 10GB SFPs. The link wont come up between them. 

However if i plug in the same SFP and fiber cable to other equipment on one of the sides the link comes up without issue (tried to link from c1300 to dell n1548, fortigate, cbs350). Its just when i connect C1300-12XS to C1300-12XS the link wont come up. 

Since it works to other equipment it tells me that the SFPs and fiber cable are good and working. 

I cant find any way to troubleshoot this in C1300 or any command that i need to enter to get these links to work.

Any ideas?

[Azizi123]

Dear fredrikhan 

check the compatibility list for your C1300-12XS.

Try manually configuring the interfaces on both C1300-12XS devices for 10G full-duplex operation

Ensure that both devices are set to use compatible link-layer settings

Look at the logs on both devices to see if there are any error messages

Ensure that both C1300-12XS devices are running the latest stable firmware

[balaji.bandi]

what model of the SFP, is this from cisco or 3rd party

show interface x/x tran (check if this command you see SFP?)

some troubleshoot from cisco side see both the side :

https://www.cisco.com/c/en/us/td/docs/switches/campus-lan-switches-access/Catalyst-1200-and-1300-Switches/Admin-Guide/catalyst-1300-admin-guide/status-and-statistics.html?bookSearch=true#ID-00000ea7

Also worth check command line logs.

[M02@rt37]

Hello @fredrikhan 

Please check here compatibility matrix for your platform:

https://tmgmatrix.cisco.com/?npid=6706