Link Aggregation Configuration - Huawei Quidway S3900 Series Operation Manual

Operation Manual – Link Aggregation
Quidway S3900 Series Ethernet Switches-Release 1510
The priorities of aggregation groups for allocating load-sharing aggregation resources
are as follows:
An aggregation group containing special ports (such as 10GE port) which require
hardware aggregation resources has higher priority than any aggregation group
containing no special port.
A manual or static aggregation group has higher priority than a dynamic
aggregation group (unless the latter contains special ports while the former does
not).
For two aggregation groups of the same kind, the one that might gain higher speed
if resources were allocated to it has higher priority than the other one. If the two
groups can gain the same speed, the one with smaller master port number has
higher priority than the other one.
When an aggregation group of higher priority appears, the aggregation groups of lower
priorities release their hardware resources. For single-port aggregation groups, they
can transceive packets normally without occupying aggregation resources
Caution:
A load-sharing aggregation group contains at least two selected ports, but a
non-load-sharing aggregation group can only have one selected port at most, while
others are unselected ports.
When more than eight load-sharing aggregation groups are configured on a single
switch, fabric ports cannot be enabled on this switch.
When no more than eight load-sharing aggregation groups are configured on a
single switch, fabric ports can be enabled on this switch. The aggregation groups
added subsequently are all non-load-sharing aggregation groups. If the fabric ports
are disabled, the state of these non-load-sharing aggregation groups will not be
changed automatically. These non-load-sharing aggregation groups will become
load-sharing aggregation groups only after the unselected ports in these
aggregation groups are unplugged and then plugged or the shutdown command
and then the unshutdown command are executed.

1.2 Link Aggregation Configuration

Huawei Technologies Proprietary
1-7
Chapter 1 Link Aggregation Configuration