3Com Switch 7750 Configuration Guide

188 CHAPTER 23: LINK AGGREGATION CONFIGURATION
Aggregation Group
Categories
Depending on whether or not load sharing is implemented, aggregation groups
can be load-sharing or non-load-sharing aggregation groups.
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 aggregation groups, newly-created aggregation groups will be
non-load-sharing ones.
The priorities of aggregation groups for allocating load-sharing aggregation
resources are as follows:
Table 120 Restriction of type-A I/O Modules on link aggregation
I/O
Module
type
Cross-chip
aggregation
Aggregation
type
I/O Module
specificatio
n
Maximum
number of
ports in an
aggregation
group
Maximum
number of
selected
ports in an
aggregation
group
Type-A
I/O
Module
Not supported Manual
aggregation
3C16860/3C
16860
16 16
3C16861/LS8
1FS24A/3C1
6861/LS81FS
24
16 16
3C16858/3C
16859/3C16
858/3C1685
9
8 8
Static/dynamic
aggregation
3C16860/3C
16860
24 16
3C16861/LS8
1FS24A/3C1
6861/LS81FS
24
24 16
3C16858/3C
16859/3C16
858/3C1685
9
8 8
Table 121 Restriction of non-type-A I/O Modules on link aggregation
I/O Module
type
Cross-chip
aggregation
Aggregation
type
Maximum
number of
ports in an
aggregation
group
Maximum
number of
selected ports in
an aggregation
group
Non-type-A I/O
Module
Supported Manual
aggregation
8 8
Static/dynamic
aggregation
The number of
ports on the I/O
Module
8