H3C S7500 Series Ethernet Switches Operation Manual

Operation Manual – Link Aggregation
H3C S7500 Series Ethernet Switches Chapter 1
Link Aggregation Configuration
1-10
 Note:
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.
Note that:
z LACP cannot be enabled on a port in a manual aggregation group.
z You can add a LACP-enabled port to a manual aggregation group. In this case,
the system will disable LACP on the port automatically. And, when you add a
LACP-disabled port to a static aggregation group, the system will enable LACP on
the port automatically.
1.2.3 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.
 Note:
LACP cannot be enabled on a port of a manual aggregation group.
Follow these steps to configure a dynamic LACP aggregation group:
To do… Use the command… Remarks
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.