Dell PowerEdge FX2 Dell PowerEdge FN I/O Aggregator Configuration Guide 9.6(0 - Page 208
Uplink Failure Detection (SMUX mode), Configuring Uplink Failure Detection (PMUX mode
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- For an example of debug log message, refer to Clearing a UFD-Disabled Interface. Uplink Failure Detection (SMUX mode) In Standalone or VLT modes, by default, all the server-facing ports are tracked by the operational status of the uplink LAG. If the uplink LAG goes down, the aggregator loses its connectivity and is no longer operational. All the server-facing ports are brought down after the specified defer-timer interval, which is 10 seconds by default. If you have configured VLAN, you can reduce the defer time by changing the defer-timer value or remove it by using the no defer-timer command. 1. View the Uplink status group. EXEC Privilege mode show uplink-state-group Dell#show uplink-state-group Uplink State Group: 1 Status: Enabled, Down 2. Enable the uplink group tracking. UPLINK-STATE-GROUP mode enable Dell(conf)#uplink-state-group 1 Dell(conf-uplink-state-group-1)#enable To disable the uplink group tracking, use the no enable command. 3. Change the default timer. UPLINK-STATE-GROUP mode defer-timer seconds Dell(conf)#uplink-state-group 1 Dell(conf-uplink-state-group-1)#defer-timer 20 Dell(conf-uplink-state-group-1)#show config ! uplink-state-group 1 downstream TenGigabitEthernet 0/1-12 upstream Port-channel 128 defer-timer 20 Configuring Uplink Failure Detection (PMUX mode) To configure UFD, use the following commands. 1. Create an uplink-state group and enable the tracking of upstream links on the switch/router. CONFIGURATION mode uplink-state-group group-id • group-id: values are from 1 to 16. To delete an uplink-state group, use the no uplink-state-group group-id command. 2. Assign a port or port-channel to the uplink-state group as an upstream or downstream interface. 208 Uplink Failure Detection (UFD)