12-19-2008 10:49 AM - edited 03-06-2019 03:04 AM
Unable to successfully link gigabit adapters over MM fiber between a Cisco 3500XL switch and a new Cisco 2960 switch. Have tried configuring ports in sevral modes but none seem to work between the older Gigabit SX module an dthe newer SFP-SX module.
Tried the following:
>switchport mode dynamic desirable
>switchport mode access
>switchport mode trunk
>switchort trunk encap dot1q
12-19-2008 12:14 PM
Hello Barron,
try to add
swichport nonegotiate
in interface configuration mode on the C2960
Hope to help
Giuseppe
12-19-2008 12:41 PM
thanks :)
i seem to recall that i ran into this exact issue before and that was the fix...
thanks again!
12-19-2008 12:28 PM
I saw SFP SX for 2960 is working at wavelngth 850.
I am trying to get it for 3500 XL, if you have info can u tell me is older Gigabit SX is working at 850nm (i tried to see with Gigabit SX i got for some other product that it is working at 1310nm)
If they are at different wavelength it is not going to work even though both are MM.
12-19-2008 12:42 PM
Hello Vishwamurti,
the right GBIC for SX in first wavelength window has the following part number
WS-G5484= SX 850 nm
WS-G5486= this is LX/LH and in the second window 1300 nm
see the compatibility matrix
I agree with you that two GBICs using different wavelengths cannot communicate.
Hope to help
Giuseppe
12-19-2008 12:46 PM
thanks for your input!
Find answers to your questions by entering keywords or phrases in the Search bar above. New here? Use these resources to familiarize yourself with the community: