3Com Switch 7750 Configuration Guide Guide

Link Aggregation Configuration 185
■ If an existing aggregation group contains no port, the type of the aggregation
group is set to the latest set type.
■ If an aggregation group contains ports, you can only change a dynamic
aggregation group or static aggregation group into a manual aggregation
group, or change a dynamic aggregation group into a static aggregation
group.
■ When a dynamic aggregation group or a static aggregation group is changed
into a manual aggregation group, the system will disable LACP on all the
member ports automatically. When a dynamic aggregation group is changed
into a static aggregation group, LACP on all the member ports remains
enabled.
Note that if a manual aggregation group or a static aggregation group contains
only one port, this port cannot be removed from the aggregation group. Instead,
it can be removed from the aggregation group only in the way of removing the
aggregation group.
n
If you use the save command to save the current configuration and then restart
the device, the configured manual/static aggregation groups and their
descriptions still exist, however, the dynamic aggregation groups will disappear
and their descriptions cannot be restored.
Configuring Parameters
for HASH
Through the following configuration tasks, you can configure parameters used by
the HASH algorithm in link aggregation, thus controlling load balancing on
aggregated ports effectively.
Table 117 Configure a dynamic LACP aggregation group
Operation Command Description
Enter system view system-view -
Configure a description for an
aggregation group
link-aggregation group
agg-id description agg-name
Optional
By default, an aggregation
group has no description.
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.
Table 118 Configure parameters for HASH
Operation Command Description
Enter system view system-view -