An administrator is configuring two FortiGate devices in an HA cluster. While configuring the devices, the administrator issues the following commands on both HA cluster members: In which two ways…

Question

Options

• AThey force the former primary to send gratuitous ARP packets when the failover happens to
• BThey force the former primary to shut down all its interfaces for one second when failover
• CThey force both HA devices for remote link monitoring to detect an issue in the forwarding
• DThey force the switches to update their MAC forwarding tables, when failover happens.

• A
  5% (2)
• B
  79% (30)
• C
  16% (6)

Explanation

In most networks, that’s enough for the switches to update their MAC forwarding tables with the new information. However, some high-end switches might not clear their MAC tables correctly after a failover. So, they keep sending packets to the former primary even after receiving the gratuitous ARPs. In these cases, you should use the command shown on this slide to force the former primary to shut down all its interfaces for one second when the failover happens, excluding heartbeat and reserved management interfaces. This simulates a link failure that clears the related entries from the MAC table of the switches.

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