3Com 7757 Configuration Manual page 194

194 C 23: L A C
HAPTER INK GGREGATION ONFIGURATION
# Create static aggregation group 1.
[SW7750] link-aggregation group 1 mode static
# Add Ethernet 2/0/1 through Ethernet 2/0/3 to aggregation group 1.
[SW7750] interface ethernet2/0/1
[SW7750-Ethernet2/0/1] port link-aggregation group 1
[SW7750-Ethernet2/0/1] interface ethernet2/0/2
[SW7750-Ethernet2/0/2] port link-aggregation group 1
[SW7750-Ethernet2/0/2] interface ethernet2/0/3
[SW7750-Ethernet2/0/3] port link-aggregation group 1
3 Adopt the dynamic LACP aggregation mode
# Enable LACP on Ethernet 2/0/1 through Ethernet 2/0/3.
[SW7750] interface ethernet2/0/1
[SW7750-Ethernet2/0/1] lacp enable
[SW7750-Ethernet2/0/1] interface ethernet2/0/2
[SW7750-Ethernet2/0/2] lacp enable
[SW7750-Ethernet2/0/2] interface ethernet2/0/3
[SW7750-Ethernet2/0/3] lacp enable
Note that the three LACP-enabled ports can be aggregated into a dynamic
aggregation group to implement load sharing only when they have the same basic
configuration, rate and duplex mode.