3Com 4210 PWR Configuration Manual page 115

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Configuring a Dynamic
LACP Aggregation
Group
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Configuring a
Description for an
Aggregation Group
Table 71 Configure a static LACP aggregation group
Operation
Enter Ethernet port view
Add the port to the
aggregation group
For a static LACP aggregation group or a manual aggregation group, you are
recommended not to cross cables between the two devices at the two ends of the
aggregation group. For example, suppose port 1 of the local device is connected
to port 2 of the peer device. To avoid cross-connecting cables, do not connect port
2 of the local device to port 1 of the peer device. Otherwise, packets may be lost.
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 which 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.
You cannot enable LACP on a port which is already in a manual aggregation
group.
Table 72 Configure a dynamic LACP aggregation group
Operation
Enter system view
Configure the system priority
Enter Ethernet port view
Enable LACP on the port
Configure the port priority
Changing the system priority may affect the priority relationship between the
aggregation peers, and thus affect the selected/unselected status of member ports
in the dynamic aggregation group.
Perform the following tasks to configure a description for an aggregation group.
Table 73 Configure a description for an aggregation group
Operation
Enter system view
Command
interface interface-type
interface-number
port link-aggregation
group agg-id
Command
system-view
lacp system-priority
system-priority
interface interface-type
interface-number
lacp enable
lacp port-priority
port-priority
Command
system-view
Link Aggregation Configuration
Remarks
-
Required
Remarks
-
Optional
By default, the system priority
is 32,768.
-
Required
By default, LACP is disabled
on a port.
Optional
By default, the port priority is
32,768.
Remarks
-
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