3Com Switch 7754, Configuration Manual

Page: 188 / 940

188 C
HAPTER
23: L
INK
A
GGREGATION
C
ONFIGURATION
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