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201 · Question #133

The interface 1.1 of the BIG-IP device has been connected to a link dedicated to traffic on VLAN 120. What should the BIG-IP Administrator do to receive traffic from the VLAN?

The correct answer is B. Create a new VLAN object and assign the interface 1.1 untagged. This question asks what configuration is needed on a BIG-IP device to receive traffic for a specific VLAN (120) when interface 1.1 is connected to a link dedicated to that VLAN.

Section 1: Perform Initial Setup

Question

The interface 1.1 of the BIG-IP device has been connected to a link dedicated to traffic on VLAN 120. What should the BIG-IP Administrator do to receive traffic from the VLAN?

Options

  • ACreate a new VLAN object and set Customer Tag to 120
  • BCreate a new VLAN object and assign the interface 1.1 untagged
  • CCreate a new trunk object with interface 1.1 assigned
  • DCreate a new trunk object and assign it to the VLAN

How the community answered

(43 responses)
  • A
    2% (1)
  • B
    88% (38)
  • C
    7% (3)
  • D
    2% (1)

Why each option

This question asks what configuration is needed on a BIG-IP device to receive traffic for a specific VLAN (120) when interface 1.1 is connected to a link dedicated to that VLAN.

ACreate a new VLAN object and set Customer Tag to 120

Setting a 'Customer Tag' is not the correct terminology for associating an interface to a VLAN; interfaces are assigned as tagged or untagged members to a VLAN object with a specific VLAN ID.

BCreate a new VLAN object and assign the interface 1.1 untaggedCorrect

To receive traffic for a VLAN on a dedicated untagged link, the BIG-IP Administrator must create a VLAN object, specify the VLAN ID (120), and then assign the physical interface (1.1) to this VLAN as an untagged member. This configures the BIG-IP to understand that all traffic arriving on interface 1.1 belongs to VLAN 120 without an 802.1Q tag.

CCreate a new trunk object with interface 1.1 assigned

A trunk object is used to group multiple interfaces for redundancy and bandwidth, but it does not define which VLANs are allowed on those interfaces or how they are tagged; VLANs are assigned directly to interfaces (or trunks).

DCreate a new trunk object and assign it to the VLAN

Assigning a trunk object to a VLAN is an incorrect statement; VLANs are assigned to interfaces or trunks, not the other way around.

Concept tested: BIG-IP VLAN configuration

Source: https://techdocs.f5.com/kb/en-us/products/big-ip_ltm/manuals/product/bigip-system-initial-configuration-13-1-0/2.html

Topics

#VLAN configuration#Interface assignment#Network setup

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