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]

On this 5520 switch I get this:
Error: Auto negotiation off is not supported on port 1:57.
 

The other end is an MRV OS606 fiber to ethernet handoff from a WAN provider.  I don’t have access to that config, the ISP handles that.

I tried plugging in my gigabit nic from my windows laptop to port 1:57 and it does not link up either.

Whats weird is the ISP supplied MRV OS606 device shows a link light when plugged into the EXOS 1:57 port.  Its just the EXOS operating system is not signaling a link.

[EXTR_Paul]

Check out the optics site for 5520 and the 1000BT p/n 10070H

  https://optics.extremenetworks.com/EXOS/

It mentions that the extreme p/n 10070H is not supported on the VIM ports. 

TTBOMK Its only supported on access ports for the 5520-48SE and 5520-24X.

[Stefan_K_]

Might be a chipset limitation that the 5520 does not support auto-nego on gigabit fiber-links - other EXOS Switches do support it and have it enabled on gigabit fiber-ports by default. Can you try to disable auto nego on both sides (or at least at the remote side):

configure ports <port number> auto off speed 1000 duplex full