H3C SR8800 Configuration Manual page 81

The static link aggregation procedure comprises:
• Selecting a reference port
Setting the aggregation state of each member port
•
Selecting a reference port
The system selects a reference port from the member ports that are in the up state and have the same
class-two configurations as the aggregate interface.
The candidate ports are sorted by aggregation priority, duplex, and speed in this order: lowest
aggregation priority value, full duplex/high speed, full duplex/low speed, half duplex/high speed, and
half duplex/low speed. The one at the top is selected as the reference port. If two ports have the same
aggregation priority, duplex mode, and speed, the one with the lower port number wins out.
Setting the aggregation state of each member port
After selecting the reference port, the static aggregation group sets the aggregation state of each
member port, as shown in
Figure 24 Setting the aggregation state of a member port in a static aggregation group
Set the aggregation state
of a member port
Is there any hardware restriction?
Port attribute/class 2 configurations
same as the reference port?
More candidate ports than max.
number of Selected ports?
Set the port in the Selected state
NOTE:
To ensure stable aggregation state and service continuity, do not change port attributes or class-two
•
configurations on any member port.
• If a static aggregation group has reached the limit on Selected ports, any port joins the group is placed
in Unselected state to avoid traffic interruption on the current Selected ports. Avoid this situation,
however, because it may cause the aggregation state of a port to change after a reboot.
Figure 24.
No
Is the port up?
Yes
Yes
No
Yes
No
No
Yes
Port number as low as to set
the port in the Selected state?
71
No
Yes
Set the port in the
Unselected state