3Com Switch 4200G Configuration Guide

Displaying and Maintaining Link Aggregation Information 81
Configuring a Dynamic
LACP Aggregation
Group
A dynamic LACP aggregation group is automatically created by the system based on
LACP-enabled ports. The adding and removing of ports to/from a dynamic
aggregation group are automatically accomplished by LACP.
You need to enable LACP on the ports whom you want to participate in dynamic
aggregation of the system, because, only when LACP is enabled on those ports at
both ends, can the two parties reach agreement in adding/removing ports to/from
dynamic aggregation groups.
LACP cannot be enabled on the following types of ports: mirroring port, port with
static MAC address configured, port with static ARP configured, port with 802.1x
enabled.
In addition, enabling LACP on a member port of a manual aggregation group will not
take effect.
Displaying and
Maintaining Link
Aggregation
Information
After the above configuration, execute the display commands in any view to display
link aggregation conditions and verify your configuration.
Add the port to the
aggregation group
port link-aggregation group agg-id Required
Enable LACP on the port lacp enable Optional, the system will
automatically enable
LACP on the port added
to a static aggregation
group.
The default LACP state
on a port is disabled.
Table 60 Configure a static LACP aggregation group (Continued)
Operation Command Description
Table 61 Configure a dynamic LACP aggregation group
Operation Command Description
Enter system view system-view —
Configure the system
priority
lacp system-priority system-priority Optional
By default, the system
priority is 32,768.
Enter Ethernet port view interface interface-type interface-number —
Enable LACP on the port lacp enable Required
By default, LACP is
disabled on a port.
Configure the port
priority
lacp port-priority port-priority Optional
By default, the port
priority is 32,768.
Configure a description
for an dynamic
aggregation group
link-aggregation group agg-id
description agg-name
Optional
By default, an
aggregation group has
no description.