ECS4100 Series CLI Reference Guide-R07

Chapter 12 | Link Aggregation Commands
Dynamic Configuration Commands
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Default Setting
Default is dependent on the port speed: 1000f–4, 100f–3, and 10f–2
Command Mode
Interface Configuration (Port Channel)
Command Usage
◆ Ports are only allowed to join the same LAG if (1) the LACP system priority
matches, (2) the LACP port admin key matches, and (3) the LACP port channel
key matches (if configured).
◆ If the port channel admin key (lacp admin key - Port Channel) is not set when a
channel group is formed (i.e., it has the null value of 0), this key is set to the
same value as the port admin key (lacp admin key - Ethernet Interface) used by
the interfaces that joined the group. Note that when the LAG is no longer used,
the port channel admin key is reset to 0.
◆ If the port channel admin key is set to a non-default value, the operational key
is based upon LACP PDUs received from the partner, and the channel admin
key is reset to the default value. The trunk identifier will also be changed by this
process.
Example
Console(config)#interface port-channel 1
Console(config-if)#lacp admin-key 3
Console(config-if)#
lacp timeout This command configures the timeout to wait for the next LACP data unit
(LACPDU).
Syntax
lacp timeout {long | short}
long - Specifies a slow timeout of 90 seconds.
short - Specifies a fast timeout of 3 seconds.
Default Setting
long
Command Mode
Interface Configuration (Port Channel)
Command Usage
◆ The timeout configured by this command is set in the LACP timeout bit of the
Actor State field in transmitted LACPDUs. When the partner switch receives an
LACPDU set with a short timeout from the actor switch, the partner adjusts the
transmit LACPDU interval to 1 second. When it receives an LACPDU set with a