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Dell EMC Configuration Guide for the S3100 Series 9.14.2.4

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Configuring an automatic recovery for an Err-disabled interface

To configure automatic Err-disabled recovery of an interface and time-out interval, use the following commands.

  1. Configure automatic recovery of an interface from Err-disabled state based on the cause.
    CONFIGURATION mode
    errdisable recovery cause {bpduguard | fefd | maclearnlimit | arp-insection}
    NOTE This command has to be configured before the interface moves to Err-disabled state. If not, the recovery action is not performed.
  2. Configure the recovery time-out interval. You can enter the interval from the range of 30 to 86,400 seconds. The default is 300 seconds.
    CONFIGURATION mode
    errdisable recovery interval seconds
    NOTE In Dell EMC Networking OS, for optimal performance of FEFD, the best practice is to set the error disable recover timer not exceeding 30 seconds with FEFD interval set to default. Thus, avoiding any potential interface flap and overlapping of recovery timings causing the FEFD enabled interface to stay in error-disabled state for a longer interval. However, this timer value need to be applied only if the FEFD error-disable mode is set to aggressive mode.
    Whenever the Err-disable recovery timer is reconfigured, it will get effective only after the current timer expires. Following message is displayed after each Err-disable recovery timer configuration:
    DellEMC(conf)# errdisable recovery interval 30
New timer interval will be effective from the next timer instance only.

Example configuration for the recovery cause and the timer interval

Following is the sample steps to configure the recovery cause and the timer interval for automatic recovery of an interface.

DellEMC# configure termimal
DellEMC(conf)# errdisable recovery cause fefd
DellEMC(conf)# errdisable recovery interval 30
DellEMC(conf)#

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