Grass Valley K2 (Summit 3G) 10Gv2 Storage Area Network Installation v.8.1 - Manual (Page 68)

4. In the switch’s configuration application, choose Configuration , then Device Features .
5. Set Spanning Tree to On and click Apply Changes .
If prompted, log in with the switch’s administrator username and password.
6. Click Port Configuration .
7. Scroll to the bottom of the list and verify that the SFP+ port is port A1.
Re-cable if necessary to correct the SFP+ port.
68 K2 SAN Installation and Service Manual 02 February 2012
Setting up the K2 SAN infrastructure