3Com Switch 7700 Configuration Manual page 49

Perform the following configuration in system view.
Table 21 Configure System Priority
Operation
Configure system priority
Restore the default system priority
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.
Table 22 Configure Port Priority
Operation
Configure port priority
Restore the default port priority
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 23 Display and Debug Link Aggregation
Operation
Display summary information of all
aggregation groups
Display detailed information of a specific
aggregation group
Display local system ID
Display detailed link aggregation information
at the port
Clear LACP statistics at the port
Configuring Link Aggregation
Command
lacp system-priority system-priority-value
undo lacp system-priority
Command
lacp port-priority port-priority-value
undo lacp port-priority
Command
display link-aggregation summary
display link-aggregation verbose agg-id
display lacp system-id
display link-aggregation interface {
interface-type interface-number |
interface-name } [ to { interface-type
interface-num | interface-name } ]
reset lacp statistics [ interface {
interface-type interface-number |
interface-name } [ to { interface-type
interface-num | interface-name } ] ]
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