3Com 3824 Implementation Manual page 22

22 C 2: O
HAPTER PTIMIZING
B
ANDWIDTH
The Switch only supports a maximum of eight active ports in any
individual aggregation.
If multiple links are connected between a unit and more than six
other devices as shown in
assigned to aggregated links. The remaining devices will each only
have one link made active, that is, passing data. All other links will
be made inactive to prevent loops occurring.
LACP detects if one of the existing six aggregated links is removed
and will then automatically assign one of the remaining devices to
the aggregated link that has become free.
Figure 4 How LACP works on a Switch with multiple aggregated links
AL 5
When multiple links of different speed connect two devices only the
highest speed links will be aggregated.
A LinkUp / LinkDown trap will only be sent for individual links. The
Traps will not be sent for an aggregation.
When setting up an aggregated link, note that:
The ports at both ends of a member link must be configured as
members of an aggregated link, if you are manually configuring
aggregated links.
A member link port can only belong to one aggregated link.
Figure 4, only six of the devices will be
Switch H
X
Switch A
AL 1
AL 4
AL 2
AL 3
AL 6
Switch D
Switch E
Switch F
Switch G
Switch B
Switch C