5520 switch 1000BT GBIC in 5520-VIM-4X wont link

[Keith9]

I put a 1000BASE-T SFP (FS.com Extreme encoded) that usually works without hesitation in X450G2 switches in a new 5520 switch.  This would be port 1:57.

I connected a cable to an ethernet handoff and get no link.  sh port 1:57 does not show any link at all.  

The reason I’m using this is to keep the face ports (1 to 48) free for endpoints and I was going to use the VIM-4X for uplinks.

Any reason why this module works fine on a 450G2 but not a 5520 on EXOS 31.1.3?

It sees it according to the log

Slot-1: Media 1000T is inserted into Port 1:57

I even tried a cisco one, it sees that one too according to the log, but I can’t establish a link.

Port     Display              VLAN Name           Port  Link  Speed  Duplex                                                                                                 #        String               (or # VLANs)        State State Actual Actual                                                                                                 ===========================================================================                                                                                                 1:57                          Default             E     R
 

[Keith9]

Ok I have them in 1:57 and 2:57.  No vlans on them, good proactive practice there….

connected a crossover cable between the two, with a live sh ports 1:57,2:57 on screen, its showing no link.

Just for the heck of it, I connected a regular straight through cat6a cable.  Still no link.

I guess the VIM-4X only supports 10gbe SFP+ ports, even though EXOS sees the insertion and removal of regular  gig SFP’s?

Think this would be able to be fixed in software?

[Keith9]

Yeah but the problem is this:
* (CIT_31.1.1.3) Slot-1  # configure ports 1:57 auto off speed 1000 duplex full
Error: Auto negotiation off is not supported on port 1:57.
 

[Stefan_K_]

What you could try: 
Plug two Gbit SFPs in the 5520 and plug a cable directly between the SFPs. This causes a loop, so remove all VLANs from the ports. Then you will see if it works. 🙂 

[Keith9]

Will this be able to be resolved in software?  I have enough ports (96 face ports plus 8 VIM).  I just really liked to standardize our ISP uplinks on SFP modules on the extra ports.  That frees up all face ports for end-user equipment.  Our other sites running Cisco 3750X or EXOS 460G2’s work great in this manner. 

[Stefan_K_]

I had the exact same problems with an X695! Link on the remote side, no link on X695 (Solution: 1 GbE link fails to come up on X695 switch when autonegotiation is enabled on the peer swi...)

As Paul mentioned it seems not to be official supported on the VIMs - but in my experience this doesn’t mean that it isn’t working at all. I got many SFPs running, that aren’t supportet according to the optics tool. Maybe I’m wrong this time… 🙂