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201 · Question #324

How is MAC masquerading configured?

The correct answer is A. Specify the desired MAC address for each VLAN for which you want this feature enabled. MAC masquerading is configured by specifying a shared MAC address for a specific VLAN, which is then used by all devices in a high availability (HA) pair for the floating IP addresses on that VLAN.

Section 6: Configure High Availability

Question

How is MAC masquerading configured?

Options

  • ASpecify the desired MAC address for each VLAN for which you want this feature enabled.
  • BSpecify the desired MAC address for each selfIP address for which you want this feature enabled.
  • CSpecify the desired MAC address for each VLAN on the active system and synchronize the systems.
  • DSpecify the desired MAC address for each floating selfIP address for which you want this feature

How the community answered

(35 responses)
  • A
    89% (31)
  • B
    3% (1)
  • C
    3% (1)
  • D
    6% (2)

Why each option

MAC masquerading is configured by specifying a shared MAC address for a specific VLAN, which is then used by all devices in a high availability (HA) pair for the floating IP addresses on that VLAN.

ASpecify the desired MAC address for each VLAN for which you want this feature enabled.Correct

MAC masquerading is configured by assigning a specific, shared MAC address to a VLAN. This ensures that all floating self-IP addresses associated with that VLAN on the HA pair utilize this consistent MAC address, improving network stability during failovers by preventing ARP table updates.

BSpecify the desired MAC address for each selfIP address for which you want this feature enabled.

MAC masquerading is associated with a VLAN, not directly with individual self-IP addresses, although it affects how floating self-IPs on that VLAN are presented.

CSpecify the desired MAC address for each VLAN on the active system and synchronize the systems.

While synchronization is involved in an HA setup, MAC masquerading is defined per VLAN and then shared, not configured solely on the active system with subsequent synchronization as the primary step.

DSpecify the desired MAC address for each floating selfIP address for which you want this feature

MAC masquerading applies to the VLAN, which then impacts how floating self-IP addresses on that VLAN function, but it is not directly configured on the floating self-IP address itself.

Concept tested: F5 BIG-IP MAC masquerading configuration

Source: https://techdocs.f5.com/en-us/bigip-15-1-0/big-ip-system-administration/managing-failover.html

Topics

#MAC masquerading#HA#VLAN configuration

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