Cisco Nexus 1000V - Upgrades; Information About Upgrades; Problems with the In-Service Software Upgrade

Table 4: Channel Modes for Individual Links in a Port Channel
DescriptionChannel Mode
LACP mode that places a port into a passive
negotiating state in which the port responds to LACP
packets that it receives but does not initiate LACP
negotiation.
passive
LACP mode that places a port into an active
negotiating state in which the port initiates
negotiations with other ports by sending LACP
packets.
active
All static port channels (that are not running LACP)
remain in this mode. If you attempt to change the
channel mode to active or passive before enabling
LACP, the device displays an error message.
You enable LACP on each channel by configuring
the interface in that channel for the channel mode as
either active or passive. When an LACP attempts to
negotiate with an interface in the on state, it does not
receive any LACP packets and becomes an individual
link with that interface; it does not join the LACP
channel group.
The default port channel mode is on.
on
Both the passive and active modes allow LACP to negotiate between ports to determine if they can form a
port channel based on criteria such as the port speed and the trunking state. The passive mode is useful when
you do not know whether the remote system, or partner, supports LACP.
Ports can form an LACP port channel when they are in different LACP modes if the modes are compatible
as in these examples:
•
A port in active mode can form a port channel successfully with another port that is in active mode.
•
A port in active mode can form a port channel with another port in passive mode.
•
A port in passive mode cannot form a port channel with another port that is also in passive mode, because
neither port will initiate negotiation.
•
A port in on mode is not running LACP and cannot form a port channel with another port that is in
active or passive mode.
LACP ID Parameters
This section describes the LACP parameters.
Cisco Nexus 1000V for VMware vSphere Interface Configuration Guide, Release 5.x
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Configuring Port Channels
LACP ID Parameters