Cisco Nexus 5000 Series Switch CLI Software Configuration Guide (OL-16597-01, July 2009)

Active ModeOn Mode

When you add or modify a port channel interface, the

SAN port channel automatically recovers.

When you add or modify a port channel member port

configuration, you must explicitly disable (shut) and

enable (no shut) the port channel member ports at

either end.

There is synchronized startup of all ports in a channel

across peer switches.

Port initialization is not synchronized.

Consistently detect misconfigurations using a port

channel protocol.

All misconfigurations are not detected as no protocol

is exchanged.

Transitions misconfigured ports to the isolated state

to correct the misconfiguration. Once you correct the

Transitions misconfigured ports to the suspended

state. You must explicitly disable (shut) and enable

(no shut) the member ports at either end. misconfiguration, the protocol ensures automatic

recovery.

You must explicitly configure this mode.This is the default mode.

About SAN Port Channel Deletion

When you delete the SAN port channel, the corresponding channel membership is also deleted. All interfaces

in the deleted SAN port channel convert to individual physical links. After the SAN port channel is removed,

regardless of the mode (active and on) used, the ports at either end are gracefully brought down, indicating

that no frames are lost when the interface is going down.

If you delete the SAN port channel for one port, then the individual ports within the deleted SAN port channel

retain the compatibility parameter settings (speed, mode, port VSAN, allowed VSAN, and port security). You

can explicitly change those settings as required.

• If you use the default On mode to avoid inconsistent states across switches and to maintain consistency

across switches, then the ports shut down. You must explicitly enable those ports again.

• If you use the Active mode, then the port channel ports automatically recover from the deletion.