Dell Force10 S25N-S50N FTOS Configuration Guide FTOS 8.4.2.7 E-Series TeraScal - Page 545

Figure 24-3. Creating a Dynamic LAG Example FTOS(conf)#interface Gigabitethernet 3/15 FTOS(conf-if-gi-3/15)#no shutdown FTOS(conf-if-gi-3/15)#port-channel-protocol lacp FTOS(conf-if-gi-3/15-lacp)#port-channel 32 mode active ... FTOS(conf)#interface Gigabitethernet 3/16 FTOS(conf-if-gi-3/16)#no shutdown FTOS(conf-if-gi-3/16)#port-channel-protocol lacp FTOS(conf-if-gi-3/16-lacp)#port-channel 32 mode active ... FTOS(conf)#interface Gigabitethernet 4/15 FTOS(conf-if-gi-4/15)#no shutdown FTOS(conf-if-gi-4/15)#port-channel-protocol lacp FTOS(conf-if-gi-4/15-lacp)#port-channel 32 mode active ... FTOS(conf)#interface Gigabitethernet 4/16 FTOS(conf-if-gi-4/16)#no shutdown FTOS(conf-if-gi-4/16)#port-channel-protocol lacp FTOS(conf-if-gi-4/16-lacp)#port-channel 32 mode active The port-channel 32 mode active command shown above 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 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; it can be configured 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. The lacp long-timeout command can be entered for static LAGs, but it has no effect. To configure the LACP long timeout (Figure 196): Step 1 Task Set the LACP timeout value to 30 seconds. Command Syntax lacp long-timeout Command Mode CONFIG-INT-PO Link Aggregation Control Protocol | 545