During a requirements gathering workshop, the customer provides the following information:
✑ Each host has 2 ֳ— 10 GbE NIC
✑ EtherChannel is not currently configured
✑ No changes can be made to the physical network
✑ Network throughput must be prioritized for defined critical services
Which two recommendations should the architect make with regard to virtual networking? (Choose two.)
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Reference:
https://docs.vmware.com/en/VMware-vSphere/6.5/vsphere-esxi-vcenter-server-65-networking-guide.pdf
https://docs.vmware.com/en/VMware-vSphere/7.0/vsan-network-design-guide/GUID-6B00B437-53A3-4ACD-8CD7-AC9D0CE5BA8E.html Answer B,C as "Network throughput must be prioritized for defined critical services"
"Network throughput must be prioritized for defined critical services" but with NIC load balancing you are not prioritizing any of the services, you just offloading NIC traffic for another NIC, so A is not valid here, B&C
Route Based requires no changes to the Physical Network and NIOC is managed as "Shares". A. Use Route Based on Physical NIC Load. B. Use Network I/O Control with Shares.
A - Use Route Based on Physical NIC Load - offers similar performance as LACP without changes needed on the network B- NIOC using shares provides priorities for each traffic type
I support A/B as well. IMO, D is disqualified because enabling LACP would entail making a modification of the physical switch ports, i.e physical network.
A >> There is no priorization possible, it is only a load balancing regardless of the type of traffic B >> Yes, it if the purpose of the feature to prioritize services or VMs C >> Yes, it is the step beyond answer B. We reserve network throughput for critical services D >> It only aggregates the uplinks, and won’t prioritize anything. In addition, setting LACP needs configuration change on the physical switches E >> It will only allow to limit some services, and won’t really prioritize the critical ones
Not A - does not prioritize traffic for defined critical services. B - Configure defined critical service with higher share values C: Reserve bandwidth for defined critical services Not D - does not prioritize defined critical services Not E - does not prioritize defined critical services
I/O Control Shares and Limits as VMwares way of controling network resources
Based on Physical NIC Load does not prioritize network throughput. However, Network IO control does that, and guarantees a minimum of bandwidth through Share, Reservation and Limites. But using limits is not a best practice. On the other hand, LACP is discarded because requires made changes to the physical network.