Allied Telesis AT-S62 - Manual (Page 139)

AT-S62 Management Software Menus Interface User’s Guide
Section I: Basic Operations 139
assumes that the other port is not part of an LACP aggregator. Instead it
functions as a normal Ethernet port by forwarding network traffic.
However, it does continue to send LACPDU packets. If it begins to receive
LACPDU packets, it automatically transitions to an active or standby mode
as part of an aggregate trunk.
If a switch is to support more than one aggregate trunk, it may be
necessary to place each trunk in a separate aggregator, while in other
cases you may be able to create just one aggregator and let the switch
discern the individual aggregate trunks for you, automatically. The
determining factor is whether the trunks are going to the same or different
devices. If the trunks are going to the same device, you need to create a
different aggregator for each trunk. If they are going to different devices,
you can create just one aggregator and the switch can form the aggregate
trunks itself.
Here are a two examples. Figure 35 illustrates an AT-8524M switch with
two LACP trunks, each containing three links. Since both aggregate trunks
go to the same 802.3ad-compliant device, in this case another Fast
Ethernet switch, each trunk requires a separate aggregator.
Figure 35. Example of Multiple Aggregators for Multiple Aggregate Trunks
AT-8500 Series Switch
802.3ad-compliant Device
Aggregate Trunks
in Separate Aggregators
Ports 1 - 3
in Aggregator 1
Ports 12 -14
in Aggregator 2
Ethernet Switch