Bill Blackford wrote:

I do not believe that Juniper keys their optics. My experience with this is limited though. I am able to get third-party optics to work just fine in EX switches.

bblackford@wsc-asw-02-1> show chassis hardware Hardware inventory: Item Version Part number Serial number Description Chassis BH0208188142 EX3200-24T FPC 0 REV 07 750-021261 BH0208188142 EX3200-24T, 8 POE CPU BUILTIN BUILTIN FPC CPU PIC 0 BUILTIN BUILTIN 24x 10/100/1000 Base-T PIC 1 REV 04 711-021270 AR0209216364 4x GE SFP Xcvr 0 NON-JNPR FFX20H700284 SFP-SX Power Supply 0 REV 02 740-020957 AT0508119769 PS 320W AC Fan Tray Fan Tray

As you can see it identifies the Xcvr as non-Juniper.

On the Cisco side, I have a Vertex 1310M GLC-LH-SM that is working fine in a 3560G.

-b

Correct me if I'm wrong but there are good and bad 3rd party SFPs. The good ones being the SFPs with their EEPROM set to appear to be Cisco kit.