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2V0-621D · Question #50

What are two limitations of Link Aggregation Control Protocol (LACP) on a vSphere Distributed Switch? (Choose two.)

The correct answer is B. Software iSCSI multipathing is not compatible. D. It does not support configuration through Host Profiles. LACP on a vSphere Distributed Switch has specific operational constraints, including incompatibility with software iSCSI multipathing and a lack of support for Host Profile configuration.

Section 2 – Configure and Administer vSphere 6.x Networking

Question

What are two limitations of Link Aggregation Control Protocol (LACP) on a vSphere Distributed Switch? (Choose two.)

Options

  • AIP Hash load balancing is not a supported Teaming Policy.
  • BSoftware iSCSI multipathing is not compatible.
  • CLink Status Network failover detection must be disabled.
  • DIt does not support configuration through Host Profiles.

How the community answered

(60 responses)
  • A
    5% (3)
  • B
    92% (55)
  • C
    3% (2)

Why each option

LACP on a vSphere Distributed Switch has specific operational constraints, including incompatibility with software iSCSI multipathing and a lack of support for Host Profile configuration.

AIP Hash load balancing is not a supported Teaming Policy.

IP Hash load balancing is the only supported teaming policy when using LACP on a vSphere Distributed Switch, making the statement that it is not supported incorrect.

BSoftware iSCSI multipathing is not compatible.Correct

LACP provides link aggregation and load balancing which can interfere with the block-level multipathing required by software iSCSI initiators for path selection and failover, as iSCSI multipathing expects independent network paths.

CLink Status Network failover detection must be disabled.

Link Status Network failover detection is a fundamental mechanism for network redundancy and is generally used with LACP; there is no requirement for it to be disabled.

DIt does not support configuration through Host Profiles.Correct

As of various vSphere versions, LACP configurations on a Distributed Switch are not fully supported by Host Profiles for consistent deployment and management across multiple hosts, often requiring manual or scripting-based configuration.

Concept tested: vSphere Distributed Switch LACP limitations

Source: https://docs.vmware.com/en/VMware-vSphere/7.0/com.vmware.vsphere.networking.doc/GUID-6CD45491-6453-4876-905D-03B527EE7BE9.html

Topics

#LACP#vSphere Distributed Switch#limitations#iSCSI multipathing#Host Profiles

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