Cisco ME 3400 Command Reference Manual page 57

Chapter 2 Cisco ME 3400 Ethernet Access Switch Cisco IOS Commands
on
passive
Defaults No channel groups are assigned.
No mode is configured.
Command Modes
Interface configuration
Command History Release
12.2(25)EX
Usage Guidelines For Layer 2 EtherChannels, you do not have to create a port-channel interface first by using the interface
port-channel global configuration command before assigning a physical port to a channel group.
Instead, you can use the channel-group interface configuration command. It automatically creates the
port-channel interface when the channel group gets its first physical port if the logical interface is not
already created. If you create the port-channel interface first, the channel-group-number can be the same
as the port-channel-number, or you can use a new number. If you use a new number, the channel-group
command dynamically creates a new port channel.
If the port is a UNI or an ENI, you must use the no shutdown interface configuration command to enable
it before using the channel-group command. UNIs and ENIs are disabled by default. NNIs are enabled
by default.
You do not have to disable the IP address that is assigned to a physical port that is part of a channel group,
but we strongly recommend that you do so.
You create Layer 3 port channels by using the interface port-channel command followed by the no
switchport interface configuration command. You should manually configure the port-channel logical
interface before putting the interface into the channel group.
After you configure an EtherChannel, configuration changes that you make on the port-channel interface
apply to all the physical ports assigned to the port-channel interface. Configuration changes applied to
the physical port affect only the port where you apply the configuration. To change the parameters of all
ports in an EtherChannel, apply configuration commands to the port-channel interface, for example,
spanning-tree commands or commands to configure a Layer 2 EtherChannel as a trunk.
If you do not specify non-silent with the auto or desirable mode, silent is assumed. The silent mode is
used when the switch is connected to a device that is not PAgP-capable and seldom, if ever, sends
packets. A example of a silent partner is a file server or a packet analyzer that is not generating traffic.
OL-9640-10
Enable on mode.
In on mode, a usable EtherChannel exists only when both connected port
groups are in the on mode.
Enable LACP only if a LACP device is detected.
Passive mode places a port into a negotiating state in which the port
responds to LACP packets it receives but does not initiate LACP packet
negotiation. A channel is formed only with another port group in active
mode.
Modification
This command was introduced.
Cisco ME 3400 Ethernet Access Switch Command Reference
channel-group
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