Allied Telesis AT-S63 - Manual (Page 151)

AT-S63 Management Software Menus Interface User’s Guide
Section I: Basic Features 151
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,
then you can create just one aggregator and the switch can differentiate
the aggregate trunks itself.
Here are a two examples. Figure 40 illustrates an AT-9400 Series switch
with two LACP trunks, each containing three links. Because 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 40. Example of Multiple Aggregators for Multiple Aggregate Trunks
Here is how the example looks in a table format.
AT-9400 Series Switch
802.3ad-compliant
Aggregate Trunks
in Different Aggregators
Ports 1 - 3
in Aggregator 1
Ports 12 -14
in Aggregator 2
Ethernet Switch
FAULT
RPS MASTER
POWER
CLASS 1 LASER PRODUCT STATUS TERMINAL PORT
1 3 5 7 9 11
2 4 6 8 10 12
13 15 17 19 21 23R
14 16 18 20 22 24R
AT-9424T/SP Gigabit Ethernet Switch
1 3 5 7 9 11 13 15 17 19 21 23R
2 4 6 8 10 12 14 16 18 20 22 24R
23 24
L/A
D/C
D/C
L/A
D/C L/A 1000 LINK / ACT
HDX / COL FDX
10/100 LINK / ACT PORT ACTIVITY
L/A 1000 LINK / ACT SFP SFP
24
SFP
23
LINK
MODE LINK MODE
FAULT
RPS MASTER
PWR
MODE STATUS
AT-8524M Fast Ethernet Switch
Aggregator
Description Aggregator
Ports Aggregate
Trunk Ports
Aggregator 1 1-3 1-3
Aggregator 2 12-14 12-14