NSE6_FSW-7.2 Exam Dumps - Fortinet Certification Questions and Answers

The MAC address "00:50:56:96:e3:fc" appearing in two different VLANs (4089 and 4094) in the diagnostic output indicates it is a MAC address associated with a device that supports traffic from multiple VLANs. Such a behavior is typical of network infrastructure devices like switches or routers, which are configured to allow traffic from various VLANsto pass through a single physical or logical interface. This is essential in network designs that utilize VLANs to segregate network traffic for different departments or use cases while using the same physical infrastructure.

References:

For more detailed information on MAC table diagnostics and VLAN configurations in FortiGate devices, refer to the official Fortinet documentation:Fortinet Product Documentation.

Time synchronization between FortiGate and its managed FortiSwitch devices is essential for several reasons:

A. FortiSwitch does not retain its time after a reboot, which gets reset after each reboot.This characteristic of FortiSwitch underlines the importance of time synchronization with FortiGate. Since FortiSwitch loses its time settings upon reboot, synchronizing with FortiGate ensures that its system clock is accurate, which is vital for logging, troubleshooting, and security timestamping.

C. FortiSwitch cannot complete the DTLS handshake used in the CAPWAP tunnel.Accurate time synchronization is crucial for security protocols such as DTLS, which rely on timestamped certificates for establishing a secure connection. If the time on FortiSwitch is not synchronized with FortiGate, the DTLS handshake used in the CAPWAP tunnel for secure communication may fail due to time discrepancies, impacting the management and operation of the switch.

The correct statement about using the Switch Port Analyzer (SPAN) packet capture method on FortiSwitch is that "Mirrored traffic can be sent across multiple switches (A)." This feature allows for extensive traffic analysis as it enables network administrators to configure SPAN sessions that span across different switches, thereby providing the capability to monitor traffic across a broad segment of the network infrastructure.

Fortinet FortiLink Protocol:The FortiLink protocol is Fortinet's proprietary mechanism for managing FortiSwitch units from a FortiGate firewall. It simplifies configuration and security policy enforcement across the connected network devices.

Auto-Discovery:FortiLink's auto-discovery feature means that by default, all ports on a FortiSwitch will actively send out discovery frames. This allows them to locate a FortiGate device that has a FortiLink interface enabled, streamlining the device management process.

No Configuration Needed:You don't have to manually configure individual ports for FortiLink discovery on FortiSwitch devices.

References

FortiSwitchOS FortiLink Guide (FortiSwitch Devices Managed by FortiOS 7.2):Refer to pages 13 and 14 for details on zero-touch management and FortiLink configuration. [https://fortinetweb.s3.amazonaws.com/docs.fortinet.com/v2/attachments/27f63c72-b083-11ec-9fd1-fa163e15d75b/FortiSwitchOS-7.2.0-FortiLink_Guide%E2%80%94FortiSwitch_Devices_Managed_by_FortiOS_7.2.pdf ]

In a hierarchical network model, the role of a device functioning simultaneously as both the distribution and core is most accurately described as "FortiGate managing FortiSwitch (B)." In this setup, FortiGate acts as the central unit managing multiple FortiSwitch units, thereby functioning both as a distribution layer—handling traffic between network segments—and as a core layer—managing traffic within the network on a broader scale. This setup is typical in medium-sized networks where a single device is capable enough to handle both roles effectively.

All hosts behind an authenticated port are allowed access after a successful authentication (A): Once a device on a port successfully authenticates using 802.1X, all other devices connected behind that port also gain network access. This is typical in scenarios where a switch is behind an authenticated port and not each device individually authenticates.

All devices connecting to FortiSwitch must support 802.1X authentication (D): For a network secured with 802.1X, all devices attempting to connect through the FortiSwitch must support and participate in 802.1X authentication to gain access. This ensures that all devices on the network are authenticated before they are allowed to communicate on the network.

VLAN assignments on FortiSwitch ports must follow certain rules and guidelines to ensure network integrity and proper traffic segregation:

Only Assign One Native VLAN on a Port (C):

Native VLAN Configuration:Each switch port can have only one native VLAN. The native VLAN carries untagged traffic for that port. If the port receives untagged frames, they are assumed to belong to the native VLAN.

Importance of Singular Native VLAN:This is crucial for preventing VLAN hopping attacks and ensures clear and secure VLAN demarcation on each port.

Assign Untagged VLANs Using FortiGate CLI (D):

CLI Configuration:Untagged VLANs, often equivalent to the native VLAN, can be assigned through the FortiGate CLI when managing a FortiSwitch via FortiLink. This allows for central management and configuration of VLANs across connected switches.

Operational Efficiency:Using the CLI ensures that VLAN settings are applied uniformly, reducing the likelihood of misconfigurations that might occur when managing VLANs individually on each switch.

References:For detailed instructions and best practices on VLAN configuration on FortiSwitch, refer to the FortiSwitch administration guide available on:Fortinet Product Documentation

To cause endpoints to exchange PoE information and negotiate power with the managed FortiSwitch via LLDP, you should configure the LLDP profile to include power management in the advertised LLDP-MED TLVs. Here are the steps:

Access the LLDP Profile Configuration:Start by entering the LLDP profile configuration mode with the command:

config switch-controller lldp-profile

edit "LLDP-PROFILE"

Enable MED-TLVs:Ensure that MED-TLVs (Media Endpoint Discovery TLVs) are enabled. These TLVs are used for extended discovery relating to network policies, including PoE, and are essential for PoE negotiation. They include power management which is crucial for the negotiation of PoE parameters between devices. The command to ensure network policies are set might look like:

set med-tlvs network-policy

Add Power Management TLV:Specifically add or ensure the power management TLV is part of the configuration. This will advertise the PoE capabilities and requirements, enabling dynamic power allocation between the FortiSwitch and the connected devices (like VoIP phones or wireless access points). This can typically be done within the network-policy settings:

config med-network-policy

edit

set poe-capability

next

end

Save and Apply Changes:Exit the configuration blocks properly ensuring changes are saved:

End

Verify Configuration:It’s always good practice to verify that your configurations have been applied correctly. Use the appropriateshoworgetcommands to review the LLDP profile settings.

By adding the power management as part of LLDP-MED TLVs, the FortiSwitch will be able to communicate its power requirements and capabilities to the endpoints, thereby facilitating a dynamic power negotiation that is crucial for efficient PoE utilization.

References:For more detailed information and additional configurations, you can refer to the FortiSwitch Managed Switches documentation available on Fortinet’s official documentation site:Fortinet Product Documentation

The STP (Spanning Tree Protocol) discarding state on port1 of Core-2, after Core-1 and Access-1 are managed and authorized by FortiGate-1, is likely due to the lack of an MCLAG (Multi-Chassis Link Aggregation Group) configuration between Core-1 and Core-2. In typical network configurations involving STP and MCLAG, the absence of MCLAG can lead to STP blocking one of the redundant paths to prevent loops, which is a critical function of STP. Port1 on Core-2 being in a discarding state suggests that it has been identified as providing a redundant path that could potentially create a network loop, hence STP has placed this port in a blocking (discarding) state to maintain a loop-free topology.

References:

For a deeper understanding of STP operations and MCLAG configurations in FortiGate managed environments, consult the Fortinet knowledge base:Fortinet Knowledge Base.

Tail-drop mode is a congestion management technique used in network devices, including FortiSwitches, to handle congestion on network ports:

Tail-Drop Mode (A):

Behavior:When a queue reaches its maximum capacity on a congested port, tail-drop mode simply drops any incoming packets that arrive after the buffer is full. This continues until the congestion is alleviated and there is space in the queue to accommodate new packets.

Application:This is a straightforward approach used when the device’s buffer allocated to the port becomes full due to sustained high traffic, preventing buffer overflow and maintaining system stability.

References:For more details on congestion management techniques and settings on FortiSwitch, you can refer to the configuration manuals available on:Fortinet Product Documentation