A Telco customer is implementing NFV using vSphere as the virtualization platform.
Which feature can help achieve a high packet rate with lower CPU consumption?
A.
Network I/O Control
B.
SplitRX
C.
ERSPAN
D.
LACP
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B
https://vbry21.wordpress.com/2012/07/17/vmware-esxi5-splitrx/
http://stretch-cloud.info/2013/02/improving-network-performance-for-multicast-traffic-splitrx-mode-is-your-choice/
http://buildvirtual.net/tuning-esxi-host-networking-configuration/
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https://www.vmware.com/content/dam/digitalmarketing/vmware/en/pdf/techpaper/vmware-perfbest-practices-vsphere6-0-white-paper.pdf#G6.1011326
And elimination method
A – NIOC is for reservation/limiting
C – ERSPAN is port mirroring (monitoring) over GRE
D – Link Aggregation has nothing to do with CPU consumption
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I think B, the strange bit is that SplitRX is enabled by default since 5.1
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Page 14 identifies B as correct answer.
http://pubs.vmware.com/nsxt-11/topic/com.vmware.ICbase/PDF/nsxt_11_bestpractice.pdf
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not to muddy the waters.. but the question specifies lower cpu consumption, and splitrx increases cpu consumption?
http://pubs.vmware.com/nsxt-11/topic/com.vmware.ICbase/PDF/nsxt_11_bestpractice.pdf
Disable SplitRx Mode for an ESXi Host
For better CPU efficiency, for example when the packet rate received from the queue is low the
SplitRx mode can be disabled for an ESXi host from the vSphere Clien
t.
–Still… I guess all the other answers seem wrong.
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…when the packet rate received from the queue is low the
SplitRx mode can be disabled. When rate is low !!!! Our question is about high packet rate
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SplitRx mode is an ESXi feature that uses multiple physical CPUs to process network packets received in a single network queue. This feature provides a scalable and efficient platform for multicast receivers. SplitRx mode typically improves throughput and CPU efficiency for multicast traffic workloads.
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Besides, part of that new 125Q 2V0-622PSE dumps are available here:
https://drive.google.com/open?id=0B-ob6L_QjGLpaXhnQWQ4S2Ffc1k
Best Regards!
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Vmware recommendation for the storage DRS datastore?
template available in Content Library, but unable to use it what could be the issue?
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Network I/O Control: traffic is divided into the following predefined network resource pools https://pubs.vmware.com/vsphere-51/index.jsp#com.vmware.vsphere.networking.doc/GUID-ADEA0213-C969-43E4-B1F4-66D4A916EBDF.html
SplitRX: send jobs to CPU https://communities.vmware.com/thread/405943
ERSPAN: is for monitoring https://www.cisco.com/c/en/us/td/docs/ios-xml/ios/lanswitch/configuration/xe-3s/lanswitch-xe-3s-book/lnsw-conf-erspan.html#GUID-4CAB13D7-0803-4D67-B720-4AB56A978FEF
LACP: method to control the bundling of several physical network links together to form a logical channel for increased bandwidth and redundancy purposes https://kb.vmware.com/s/article/2034277
For me the correct answer that is more close to the question is Network I/O Control (A)
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