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14 Link Aggregation
14.2.3 Configuration of LACP link aggregation
(1) Setting the channel group
Points to note
For LACP link aggregation, use the
specify the channel group number, and set either
Ethernet interface configuration mode.
Command examples
1.
(config)# interface range fastethernet 0/1-2
Places the Switch in Ethernet interface configuration mode for configuring ports 0/1
and 0/2.
2.
(config-if-range)# channel-group 3 mode active
(config-if-range)# exit
Adds ports 0/1 and 0/2 to channel group 3 in LACP mode. If
specified, the LACP starts sending LACPDUs in active mode, independently of the
remote device. If
only when LACPDUs are received from the remote device.
(2) Setting the system priority
The LACP system priority can be set. Normally, you do not need to change the LACP port
priority value.
Points to note
The smaller the LACP system priority value set, the higher the priority.
Command examples
1.
(config)# lacp system-priority 100
Sets the LACP system priority level of the Switch to
2.
(config)# interface port-channel 3
(config-if)# channel-group lacp system-priority 50
(config-if)# exit
Sets the LACP system priority level of channel group 3 to
made, the system priority level of the switch (
(3) Setting port priority
Set the LACP port priority. For the Switch, the LACP port priority is used for the standby link
functionality, which is an extended function. Normally, you do not need to change the LACP
port priority value.
Points to note
The smaller the LACP port priority value set, the higher the priority.
Command examples
1.
(config)# interface fastethernet 0/1
(config-if)# lacp port-priority 100
220
channel-group mode
passive
mode is specified, the LACP starts sending LACPDUs
configuration command to
active
or
passive
active
100
.
50
. If this change is not
100
) is used.
mode in
mode is
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