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101 · Question #611

A BIG-IP Administrator needs to configure a network to separate traffic into three different VLANs using a single port on the BIG-IP device. What means should be used to allow this?

The correct answer is C. 0902 19 VLAN tagging. IEEE 802.1Q VLAN tagging allows multiple VLANs to traverse a single physical port by inserting a tag into Ethernet frames to identify VLAN membership.

Section 1: OSI Model, Network, and Application Delivery Basics

Question

A BIG-IP Administrator needs to configure a network to separate traffic into three different VLANs using a single port on the BIG-IP device. What means should be used to allow this?

Options

  • ALACP link aggregation
  • BMultiple MAC registration Protocol
  • C0902 19 VLAN tagging
  • DPort Spanning

How the community answered

(27 responses)
  • B
    7% (2)
  • C
    89% (24)
  • D
    4% (1)

Why each option

IEEE 802.1Q VLAN tagging allows multiple VLANs to traverse a single physical port by inserting a tag into Ethernet frames to identify VLAN membership.

ALACP link aggregation

LACP (Link Aggregation Control Protocol) bundles multiple physical links into a single logical interface for increased bandwidth and redundancy, but does not provide VLAN separation on a single port.

BMultiple MAC registration Protocol

Multiple MAC Registration Protocol (MMRP) is used in IEEE 802.1 bridged networks for registering MAC addresses across bridges, not for separating traffic into multiple VLANs on a single port.

C0902 19 VLAN taggingCorrect

802.1Q VLAN tagging is the IEEE standard that inserts a 4-byte tag into Ethernet frames to carry VLAN membership information across a single physical link. On BIG-IP, a tagged interface (trunk) allows one physical port to participate in multiple VLANs simultaneously, enabling traffic separation into three distinct VLANs without requiring additional physical ports.

DPort Spanning

Port spanning (port mirroring) copies traffic from one port to another for monitoring purposes and does not enable VLAN separation on a single physical port.

Concept tested: 802.1Q VLAN tagging on BIG-IP single-port VLAN separation

Source: https://techdocs.f5.com/en-us/bigip-15-1-0/big-ip-tmos-routing-administration/vlans-vlan-groups-and-vxlan.html

Topics

#VLAN tagging#802.1Q#trunk port#BIG-IP networking

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