MAD readiness check

The MAD assist device must be connected over a LACP trunk interface to the VSF device. Once you configure the IP address of a MAD assist device, the VSF switch will perform a MAD readiness check to determine:
  • If the MAD assist device is reachable.

  • If a trunk interface is used to reach the device.

  • If the trunk interface has at least one, linked —up, physical port on each member of the VSF switch.

If the above three conditions are not met, MAD will fail to detect dual active fragments in the event of a VSF split. This error will create a log message.

The MAD readiness check is repeated periodically. If MAD-probe parameters have changed, an appropriate log message will be created.