Cisco 2960XR uplink to 6509E switch won't work

[gaskincharles]

I have recently purchased a Cisco WS-C2960XR-48LPD switch, which I am unable to connect back up to my 6509 switch. The only thing I can think of that might be an issue is the fact that the uplink type for the 2960 is 10Gig and the line card back on the 6509 is a 1Gig SFP line card. So, I switched to a 1Gig SFP module in the 2960 switch but to no avail. I then placed the 10Gig SFP back in the 2960 and tried to connect to the Sup2T's 10Gig GBIC uplink connection but  still this did not work.

6509 Configs (Sup 2T), line card types are WS-X6748-SFP and WS-X6724-SFP, which are 1 Gig SFP line cards

Interface GigabitEthernet2/3
switchport
switchport mode trunk
switchport trunk allowed vlan all

2960XR switch Configs

Interface TenGigabitEthernet1/0/1
switchport
switchport mode trunk
switchport trunk allowed vlan all

SFP information

The type of SFP that the 2960 switch came with is a SFP-10G-SR, which is a 10 Gig SFP module. This does not work.

Type of SFP being used with the 2960 switch for testing is a GLC-SX-MM sfp, which is a 1 Gig SFP module. This does not work.

[glen.grant]

   
You can't hook a 1 gig connection on one end to a 10 gig connection on the other end . Both ends must match.

[gaskincharles]

Right, I was testing with a 1 Gig SFP module to a 1 Gig SFP module. I also was testing with a 10 Gig SFP module to the 6509 Sup2t 10 Gig GBIC port. 

The issues ended up being I needed to enter the switchport nonnegotiate command on both interfaces.

[Leo Laohoo]

1.  I agree with Glenn.  Cisco SFP/SFP+ modules only have one speed.  So your two modules must match or the link won't go up. 

2.  Depending on the type of line card you are using, the configurtion for Gig 2/3 is missing the command "switchport trunk encapsulation dot1q".  You do not need this command in the 2960XR.