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.
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)- A5% (3)
- B92% (55)
- C3% (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.
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.
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.
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.
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
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