Dell PowerSwitch S5212F-ON EMC SmartFabric OS10 User Guide Release 10.5.1 - Page 461
Con LACP fallback, LACP fallback in non-VLT network, Example configuration
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● After the LACP fallback election, if a port with lower priority port is configured to be part of the same port channel, it would trigger reelection. Configure LACP fallback 1. Enable LACP fallback with the lacp fallback enable command in port channel INTERFACE mode. 2. Set a timer for receiving LACP PDUs using lacp fallback timeout timer-value in port channel INTERFACE mode. 3. (Optional) Enable or disable LACP fallback port preemption using lacp fallback preemption {enable | disable} in port channel INTERFACE mode. Example configuration OS10# configure terminal OS10(config)# interface port-channel 1 OS10(conf-if-po-1)# lacp fallback enable OS10(conf-if-po-1)# lacp fallback timeout 20 OS10(conf-if-po-1)# lacp fallback preemption enable View LACP fallback configuration OS10# show port-channel summary Flags: D - Down I - member up but inactive P - member up and active U - Up (port-channel) F - Fallback enabled Group Port-Channel Type Protocol Member Ports 1 port-channel1 (UF) Eth DYNAMIC 1/1/10(P) 1/1/11(I) LACP fallback in non-VLT network In a non-VLT network, LACP fallback enables rebooting of ToR or server that is connected to the switch through normal LACP. The other end of the switch is connected to a DHCP/PXE server, as shown in the following figure: In the above scenario, LACP fallback works as follows: Layer 2 461
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