Dell S4820T, Configuration Manual

Page: 563 / 1178

The LAG is in the default VLAN. To place the LAG into a non-default VLAN, use the
tagged
command on
the LAG.
Dell(conf)#interface vlan 10
Dell(conf-if-vl-10)#tagged port-channel 32
Configuring the LAG Interfaces as Dynamic
After creating a LAG, configure the dynamic LAG interfaces.
To configure the dynamic LAG interfaces, use the following command.
• Configure the dynamic LAG interfaces.
CONFIGURATION mode
port-channel-protocol lacp
Example of the
port-channel-protocol lacp
Command
Dell(conf)#interface Gigabitethernet 3/15
Dell(conf-if-gi-3/15)#no shutdown
Dell(conf-if-gi-3/15)#port-channel-protocol lacp
Dell(conf-if-gi-3/15-lacp)#port-channel 32 mode active
...
Dell(conf)#interface Gigabitethernet 3/16
Dell(conf-if-gi-3/16)#no shutdown
Dell(conf-if-gi-3/16)#port-channel-protocol lacp
Dell(conf-if-gi-3/16-lacp)#port-channel 32 mode active
...
Dell(conf)#interface Gigabitethernet 4/15
Dell(conf-if-gi-4/15)#no shutdown
Dell(conf-if-gi-4/15)#port-channel-protocol lacp
Dell(conf-if-gi-4/15-lacp)#port-channel 32 mode active
...
Dell(conf)#interface Gigabitethernet 4/16
Dell(conf-if-gi-4/16)#no shutdown
Dell(conf-if-gi-4/16)#port-channel-protocol lacp
Dell(conf-if-gi-4/16-lacp)#port-channel 32 mode active
The port-channel 32 mode active command shown here may be successfully issued as long as there is
no existing static channel-member configuration in LAG 32.
Setting the LACP Long Timeout
PDUs are exchanged between port channel (LAG) interfaces to maintain LACP sessions.
PDUs are transmitted at either a slow or fast transmission rate, depending upon the LACP timeout value.
The timeout value is the amount of time that a LAG interface waits for a PDU from the remote system
before bringing the LACP session down. The default timeout value is 1 second . You can configure the
default timeout value to be 30 seconds . Invoking the longer timeout might prevent the LAG from flapping
if the remote system is up but temporarily unable to transmit PDUs due to a system interruption.
NOTE: The 30-second timeout is available for dynamic LAG interfaces only. You can enter the
lacp
long-timeout
command for static LAGs, but it has no effect.
To configure LACP long timeout, use the following command.
• Set the LACP timeout value to 30 seconds.
Link Aggregation Control Protocol (LACP)
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