A company wants to deploy VMware NSX for vSphere and ensure the least amount of bandwidth consumption in the underlying physical architecture.
Which replication mode should the logical switches be deployed with ?
A.
Multicast Replication Mode
B.
Unicast Replication Mode
C.
Hybrid Replication Mode
D.
vSphere Replication Mode
I believe that B should be the correct answer, as with Unicast most of the BUM Traffic is handled within the Host(s).
See:
https://pubs.vmware.com/NSX-6/topic/com.vmware.nsx.admin.doc/GUID-69010816-CADD-4BEB-8915-8C8E2C044E0B.html
Also, within the VCP-NV Certificatio Book it reads, that “additional resources are consumed in the underlay to process all the multicast Traffic”.
Correct me, if I am mistaken..
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Finding this after posting the above could also make one think that Answer A is correct:
http://www.routereflector.com/2015/02/vxlan-on-vmware-nsx-vtep-proxy-unicastmulticasthybrid-mode/
Quote:
Unicast mode is the default configuration when adding a VNI. It’s the most easiest option and it doesn’t require any multicast support by the physical network. The drawbacks are:
high local network physical utilization (remote VTEPs still receive a single VXLAN packet replicated by proxies);
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BTW, part of the new 285Q 2V0-642 dumps are available here:
https://drive.google.com/open?id=0B-ob6L_QjGLpbVl3X1hXbUdteHc
Best Regards!
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