View all questions & answers for the NSE 5 - FortiSwitch 7.6 Administrator Exam Materials exam


Question 22 Discussion

You are deploying a FortiSwitch virtual stack in a network that contains Cisco devices. You want the Cisco devices to automatically discover the FortiSwitch devices and exchange device information. Which two protocols must be enabled on the FortiSwitch devices to achieve this? (Choose two answers)

  • A. Unidirectional Link Detection
  • B. Cisco Discovery Protocol
  • C. Link Layer Discovery Protocol
  • D. LLDP – Media Endpoint Discovery
Correct Answer: B,C

Brave-Dump Clients Votes

BC 100%

Comments



javaughn Bryan 2025-12-10 20:35:59

Selected Answers: B, C


B&C are correct. D is not correct. LLDP-MED is an extension of LLDP, not a general discovery protocol. Its whole purpose is endpoint autoconfig, not switch-to-switch discovery.

CDP is a proprietary protocol developed by Cisco for discovering adjacent devices in a LAN. FortiSwitch does not natively support CDP but can include CDP-compatible TLVs in LLDP packets for interoperability with Cisco devices. This way, FortiSwitch can support receiving, processing, and transmitting CDP advertisements.

CDP is disabled on FortiSwitch by default. You enable CDP on a per-port basis. Because FortiOS does not support a CLI setting to enable CDP, you must apply the configuration directly on the switch or use the custom command tool available on FortiGate.

This slide shows the CLI commands you must run on FortiSwitchOS to enable CDP on a port. As with LLDP, you can select whether you want to only transmit CDP advertisements, only receive CDP advertisements, or both transmit and receive CDP advertisements.

Note that CDP works only if you previously enabled LLDP on the port. In addition, CDP advertisements are transmitted at the same interval configured for LLDP.

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John 2025-12-20 19:47:19

Selected Answers: B, C


LLDP-MED is specifically designed for media endpoints such as IP phones and video devices.
It is primarily used to advertise network policies (VLAN, CoS, and DSCP) to LLDP-MED–capable endpoints, not to perform traffic classification or queue selection on the switch itself.

Because the question does not specify voice or video endpoints (such as IP phones), LLDP-MED is not applicable.

Options B and C are correct because they describe QoS mechanisms that directly control traffic handling on the device, independent of endpoint type.