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Fabric Interconnect CLI:
By connecting directly to the fabric interconnect you can quickly issue the following commands to Reinitialize (Disable&Enable) the specified FC Port Channel. Often this is required when initally configuring an FC Port Channel with an MDS. The example below will show how to Reinitialize Port Channel 10 on ‘Fabric A’ and Port Channel 11 on ‘Fabric B’:

Note: for assistance on cmds – tail command with a ‘?’

Fabric A
Commands issued in sequence:
• scope fc-uplink
• scope fabric A
• scope port-channel 10
• show
• disable
• commit-buffer
• enable
• commit-buffer
• show
• show detail expand

FI-A# scope fc-uplink
FI-A /fc-uplink # scope fabric A
FI-A /fc-uplink/fabric # scope port-channel 10
FI-A /fc-uplink/fabric/port-channel # show

Fabric ID: A
Slot Id: 1
Port Id: 32
Membership: Up
Admin State: Enabled
Current Task:

Fabric B
• scope fc-uplink
• scope fabric B
• scope port-channel 11
• show
• disable
• commit-buffer
• enable
• commit-buffer
• show
• show detail expand

In order to troubleshoot the FC Uplink ports:
• scope fc-uplink
• scope fabric A – A|B
• show interface – this will display all FC Uplink Ports
• show interface detail
• scope interface 1 29
• show interface detail
• show fault

Connect Via Nexus OS:
connect nxos a | b
show san-port-channel database
show san-port-channel summary
show san-port-channel internal info all
show interface
show interface brief
show interface fc1/29
show interface transceiver

Check for FLOGI:
show npv flogi-table

UCS Manager:
Click on the SAN tab in UCS Manager, click to expand ‘SAN Cloud’ – ‘Fabric A’ – ‘FC Port Channels’. From here you have the option to Disable|Enable the highlighted FC Port Channel: