Technical data

Configuring Link Aggregation 41
Perform the following configuration in system view.
By default, system priority is 32768.
Configuring Port Priority
The LACP compares system IDs first and then port IDs (if system IDs are the same)
in determining if the member ports are selected or standby ones for a dynamic
LACP aggregation group. If the ports in an aggregation group exceed the port
quantity threshold for that group, the system shall set some ports with smaller
port IDs as selected ports and others as standby ports. The port ID consists of
two-byte port priority and two-byte port number, that is, port ID = port priority +
port number. The system first compares port priority values and then port numbers
and the small port ID is considered prior.
Perform the following configuration in Ethernet port view.
The default value for port priority is 32768.
Displaying and Debugging Link Aggregation
After you have completed your configuration, execute the display command in
any view to display the link aggregation configuration, and to verify the effect of
the configuration.
You can also use the reset command in user view to clear LACP statistics of the
port. Use the debugging commands in user view to debug LACP.
Table 21 Configure System Priority
Operation Command
Configure system priority lacp system-priority system-priority-value
Restore the default system priority undo lacp system-priority
Table 22 Configure Port Priority
Operation Command
Configure port priority lacp port-priority port-priority-value
Restore the default port priority undo lacp port-priority
Table 23 Display and Debug Link Aggregation
Operation Command
Display summary information of all
aggregation groups
display link-aggregation summary
Display detailed information of a specific
aggregation group
display link-aggregation verbose agg-id
Display local system ID display lacp system-id
Display detailed link aggregation information
at the port
display link-aggregation interface {
interface-type interface-number |
interface-name } [ to { interface-type
interface-num | interface-name } ]
Clear LACP statistics at the port reset lacp statistics [ interface {
interface-type interface-number |
interface-name } [ to { interface-type
interface-num | interface-name } ] ]