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Chapter 6: LACP Port Trunks
84 Section I: Basic Operations
If there will be more than one aggregate trunk on a switch, each trunk
might require a separate aggregator or it might be possible to combine
them into a common aggregator. The determining factor will be whether
the trunks are going to the same device or different devices. If the trunks
are going to the same device, each must have its own aggregator. If they
are going to different devices, the trunks can be members of a common
aggregator. In the latter situation, the switch will differentiate the individual
aggregate trunks.
Here are two examples. Figure 2 illustrates the AT-9400 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 Gigabit
Ethernet switch, each trunk requires a separate aggregator.
Figure 2. Example of Multiple Aggregators for Multiple Aggregate Trunks
AT-9400 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
1357911
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 91113 1517192123R
2 4 6 8 10121416 18202224R
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
STATU S
AT-8524M
Fast Ethernet Switch