Tag: distributed switch

The following notes will assist you to prepare for this objective:

• You will need to know the features set of both type of switch
  • Standard and Distributed switch
  • Select the appropriate switch given a scenario
  • Understand level of effort in administration
• Don’t let questions mislead you on feature set
  • Standard switches have significant functionality
• Learn what the standards actually mean
  • IEEE 802.1q / IEEE 802.3ad
• Also be able to differentiate discovery protocols
  • When would you use LLDP or CDP?
  • Does that affect switch choice?
• Be able to determine when a feature is appropriate
  • Health check
  • Beacon probing – detect uplink failure
  • Notify switches – switch cache mac address
  • Roll back
  • Traffic shaping
  • NIOC
• Questions on NIC teaming rules are possible
• Can you draw out how traffic flows given each load balancing algorithm is used?
  • Route based on originating virtual port
  • Route based on source MAC hash
  • Route based on source IP hash
  • Route based on physical NIC load
  • Explicit failover order

Reference:

vSphere Networking Guide pdf – Chapter 8 – Networking Policies

The following notes will assist you to prepare for this objective:

• Be aware of additional features of both HA and DRS
  • HA provides option to enable VM fault tolerance
  • HA provides optional VM Component Protection
  • DRS rules control placement (affinity)
  • DRS provides optional DPM
• Make sure you have read and experimented with admission control
  • Remember this is a gating of VM power on operations
  • What is slot size? Different from %?
• Ultimately DRS is automating vMotion
  • So what stops vMotion from working?
  • Incompatible CPUs!
• Ensure you have looked at Enhanced vMotion Compatibility (EVC)
  • Can you explain CPU masking?
  • Can you pick the appropriate use-case from implementation of either?
• You need to have awareness of vMotion Encryption

Reference:

vSphere Availability Guide pdf – Chapter 2 – Creating and Using vSphere HA Clusters

vSphere Resource Management Guide pdf

• Chapter 10 – Managing Resource Pools
• Chapter 11 – Creating a DRS Cluster

vSphere Security Guide pdf – Chapter 6 – Encrypted vSphere vMotion