H3C S5600 Series Operation Manual page 194

Operation Manual – Link Aggregation
H3C S5600 Series Ethernet Switches
In general, the system only provides limited load-sharing aggregation resources, so the
system needs to reasonably allocate the resources among different aggregation
groups.
The system always allocates hardware aggregation resources to the aggregation
groups with higher priorities. When load-sharing aggregation resources are used up by
existing
non-load-sharing ones.
Load-sharing aggregation resources are allocated to aggregation groups in the
following order:
An aggregation group containing special ports 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 aggregation groups, the one that might gain higher speed if resources were
allocated to it has higher priority than others. If the groups can gain the same
speed, the one with smallest master port number has higher priority than other
groups.
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 undo shutdown command are executed.
aggregation groups,
Chapter 1 Link Aggregation Configuration
newly-created aggregation
1-6
groups will be