3Com Switch 7750 Configuration Guide Guide

Overview 181
n
If devices at one side of the link aggregation group use type-A cards and devices
at the other side of the group use cards other than Type A, when the number of
ports exceeds eight and the number of selected ports reaches to eight in the link
aggregation group, packets may be lost.
Table 113 and Table 114 describe the restriction of type-A I/O Modules and
non-type-A I/O Modules on link aggregation respectively.
Table 112 Link aggregation types and related descriptions
Aggregation type Basic description Specific description
Manual aggregation
Support up to 384
aggregation groups, including
64 load sharing aggregation
groups
■ For Type-A cards, an
aggregation group
supports up to 8 selected
GE ports or 16 selected FE
ports
■ For non-Type-A cards, an
aggregation group
supports up to 8 selected
GE ports or 8 selected FE
ports
Static/dynamic aggregation
■ For Type-A cards, an
aggregation group
supports up to 8 selected
GE ports
■ For Type-A cards, an
aggregation group
supports up to 24 FE ports,
including up to 16 selected
ones
■ For non-Type-A cards, an
aggregation group
supports up to 48 ports,
including up to 8 selected
ones
Table 113 Restriction of type-A I/O Modules on link aggregation
I/O Module
type
Cross-chip
aggregation
Aggregation
type
I/O Module
specification
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 16 16
3C16861 16 16
3C16858/3C1
6859
8 8
Static/dynami
c aggregation
3C16860 24 16
3C16861 24 16
3C16858/3C1
6859
8 8