Dell Force10 MXL Blade - Configure the LAG Interfaces as Dynamic; Set the LACP Long Timeout

290 | Link Aggregation Control Protocol (LACP)
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The LAG is in the default VLAN. To place the LAG into a non-default VLAN, use the tagged command on
the LAG (Figure 16-2):
Figure 16-2. Placing a LAG into a Non-default VLAN
Configure the LAG Interfaces as Dynamic
After creating a LAG, to configure the dynamic LAG interfaces, use the port-channel-protocol lacp
command. Figure 16-3 shows ports 3/15, 3/16, 4/15, and 4/16 added to LAG 32 in LACP mode.
Figure 16-3. Creating a Dynamic LAG Example
The port-channel 32 mode active command in Figure 16-3 may be successfully issued as long as there is no
existing static channel-member configuration in LAG 32.
Set 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 on 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 but you can configure it 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 use the lacp
long-timeout
command for static LAGs, but it has no effect.
FTOS(conf)#interface vlan 10
FTOS(conf-if-vl-10)#tagged port-channel 32
FTOS(conf)#interface TenGigabitethernet 3/15
FTOS(conf-if-te-3/15)#no shutdown
FTOS(conf-if-te-3/15)#port-channel-protocol lacp
FTOS(conf-if-te-3/15-lacp)#port-channel 32 mode active
...
FTOS(conf)#interface TenGigabitethernet 3/16
FTOS(conf-if-te-3/16)#no shutdown
FTOS(conf-if-te-3/16)#port-channel-protocol lacp
FTOS(conf-if-te-3/16-lacp)#port-channel 32 mode active
...
FTOS(conf)#interface TenGigabitethernet 4/15
FTOS(conf-if-te-4/15)#no shutdown
FTOS(conf-if-te-4/15)#port-channel-protocol lacp
FTOS(conf-if-te-4/15-lacp)#port-channel 32 mode active
...
FTOS(conf)#interface TenGigabitethernet 4/16
FTOS(conf-if-te-4/16)#no shutdown
FTOS(conf-if-te-4/16)#port-channel-protocol lacp
FTOS(conf-if-te-4/16-lacp)#port-channel 32 mode active