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2V0-622 · Question #267

Which is required for configuring iSCSI Software Adapter network port binding?

The correct answer is D. VMkernel of the iSCSI traffic must be bound to only one active network adapter.. iSCSI Software Adapter port binding requires each VMkernel port to map one-to-one with a single active physical NIC to enable proper software iSCSI multipathing.

Section 3 – Configure and Administer vSphere 6.5 Storage

Question

Which is required for configuring iSCSI Software Adapter network port binding?

Options

  • AVMkernel of the iSCSI traffic must be load balanced using Route based on IP Hash algorithm.
  • BVMkernel of theiSCSI traffic must be load balanced using Route based on Source Virtual Port ID
  • CVMkernel of the iSCSI traffic must be load balanced using Route based on Source MAC Hash
  • DVMkernel of the iSCSI traffic must be bound to only one active network adapter.

How the community answered

(32 responses)
  • A
    9% (3)
  • B
    16% (5)
  • C
    3% (1)
  • D
    72% (23)

Why each option

iSCSI Software Adapter port binding requires each VMkernel port to map one-to-one with a single active physical NIC to enable proper software iSCSI multipathing.

AVMkernel of the iSCSI traffic must be load balanced using Route based on IP Hash algorithm.

IP Hash load balancing is used for NIC teaming across a vSwitch and is not a requirement for iSCSI port binding - in fact, distributing a VMkernel across multiple active NICs via IP Hash violates the 1:1 NIC binding requirement.

BVMkernel of theiSCSI traffic must be load balanced using Route based on Source Virtual Port ID

Route based on Source Virtual Port ID is a standard vSwitch load balancing policy for VM traffic and is not relevant to or required for iSCSI Software Adapter port binding.

CVMkernel of the iSCSI traffic must be load balanced using Route based on Source MAC Hash

Route based on Source MAC Hash is a NIC teaming algorithm for general vSwitch use and is not a prerequisite for configuring iSCSI port binding.

DVMkernel of the iSCSI traffic must be bound to only one active network adapter.Correct

VMware's iSCSI port binding feature requires a strict 1:1 relationship between each VMkernel port and a single active physical adapter, with no standby adapters configured on that port group. This design ensures each iSCSI session is pinned to a specific NIC, enabling the software iSCSI initiator to perform multipathing correctly across independent paths. Load balancing across multiple uplinks on a single VMkernel is not supported in this configuration.

Concept tested: iSCSI Software Adapter port binding NIC requirement

Source: https://docs.vmware.com/en/VMware-vSphere/6.5/com.vmware.vsphere.storage.doc/GUID-9384D845-5B29-4DE8-B20C-B5613B8B56B4.html

Topics

#iSCSI software adapter#port binding#network adapter#VMkernel

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