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HPE7-A07 · Question #58

A client connecting to a tunneled open network is receiving the wrong VLAN Your customer has a gateway and has sent over a packet capture from a switch port mirror taken from the upstream switch…

The correct answer is D. VLAN tag assignment win be included in the port mirror. In a packet capture from an upstream switch port mirror, you would see the VLAN assignment. The port mirror captures the traffic as it is on the network, including any VLAN tags. GRE or IPsec tunnels encapsulate the original packet, including VLAN tags, but the VLAN information…

Troubleshooting and Optimization of Campus Mobility

Question

A client connecting to a tunneled open network is receiving the wrong VLAN Your customer has a gateway and has sent over a packet capture from a switch port mirror taken from the upstream switch with a packet capture from the IPsec tunnel and the GRE tunnel to help Identify the VLAN being sent from the controller to the AP. Where will you see the VLAN assignment?

Options

  • AThe GRE tunnel will include the VLAN lag assignment
  • BVLAN tag assignment win not he captured in any of the packet captures
  • CIPsec tunnel will include the VLAN tag assignment
  • DVLAN tag assignment win be included in the port mirror

How the community answered

(15 responses)
  • A
    13% (2)
  • C
    7% (1)
  • D
    80% (12)

Explanation

In a packet capture from an upstream switch port mirror, you would see the VLAN assignment. The port mirror captures the traffic as it is on the network, including any VLAN tags. GRE or IPsec tunnels encapsulate the original packet, including VLAN tags, but the VLAN information is not visible within the encapsulation headers.

Topics

#VLAN assignment#GRE tunnel#IPsec tunnel#packet capture

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