2960-S ports gi1/0/49-50 and te1/0/1-2

[Bradley Fox]

This is probably a stupid question for those who are familiar with Cisco hardware but I can't find any documentation on this.  I have a Catalyst 2960S-48FPD-L (48 1000baseT and 2 SFP+ 10G ports).  When looking at the configuration I see gi1/0/49 and 50 as well as te1/0/1 and 2.  I'm assuming the SFP+ ports are the te1/0/1 and 2 ports but where are gi1/0/49 and 50? 

The only thing I can think of is that when using SFP modules they are gi1/0/49&50 when using SFP+ modules they are te1/0/1&2.

interface GigabitEthernet1/0/49

!

interface GigabitEthernet1/0/50

!

interface TenGigabitEthernet1/0/1

!

interface TenGigabitEthernet1/0/2

[Alessio Andreoli · Accepted solution]

Hi Bradley,

http://www.cisco.com/en/US/docs/switches/lan/catalyst2960/hardware/installation/guide_stack/HIGOVERV.html#wp1233615

this is the description of your switch and why they use up to 50 ports if physically they are 48. Your understanding is correct. Depending from how you use the SFP you will configure them as normal gx/0/49-50 or TEN interfaces.

Alessio

[Dale Green]

All,

I have this new stack of Catalyst 2960XR switches, two of which have the two SFP+ ports on the far right hand side that I'm trying to use as 10GB ports for storage networking. However, it's not clear to me (even after reading through reams of Cisco setup guides, including the one above in this thread) how to tell the config that I'd like to use these as 10GB (te#/0/1-2) rather than extra Gigabit ports (Gi#/0/49-50). I've tried a few things to make this happen, including:

1. specifying 'media-type sfp', but my iOS doesn't recognize this

2. specifying 'shutdown' in the port Gi49-50 configs, but this shuts down the Ten1-2 ports also

3. clearing the config entirely from Gi49-50 so it's blank, but leaving some config statements in the Ten1-2 sections

4. shutting down and restarting the ports in between all these steps

At the moment, I can't convince these ports to recognize any link (using Cisco branded cables, incidentally), so my feeling is that there's some iOS out there that my config is missing that will magically enable my Te1-2 ports as 10GB ports. I'm just can't find what that mystery command is anywhere. I'd be grateful for any hints.

Dale.

[Bradley Fox]

This is a pretty old thread that was already completed so I'm not sure if you will get any of the Cisco experts in here to answer you.

From what I've found on these switches you don't have to specify the media type.  The switch is supposed to detect it automatically depending on if you've used a SFP+ or standard SFP adapter.  I also learned this switch does not like copper on the SFP ports, I was only able to get fiber SFP and SFP+ modules to work.

[DondonSTEPHEN15733]

Hi Bradley,

SFP + port support SFP module, but the speed of this port is 1G instead of 10G. However, SFP + module cannot be connected to the SFP port, because the SFP + module does not support the speed below 1G.
Tengi 1/0/1 and Tengi1 / 0/2 ports correspond respectively to ports Gi1 / 0/49 and Gi1 / 050, it depends on the SFP module (SFP or SFP +) you use to configure the port speed to 1GB or 10go

Dondon