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VIDEO: vSphere Distributed Switch 6 – Technical Deep Dive

VMware’s latest 6.0 version of the vSphere Distributed Switch (VDS) provides unparalleled networking features, control mechanisms, and new ways to construct a LAN topology. In this year’s version of one of the highest rated VMworld sessions, you’ll get front row seats to a deep dive on the VDS in a variety of real world use cases.

Gain new knowledge for building multi-tenant capable configurations with NIOC version 3 and CoS marking, learn how to protect critical vSphere management workloads consuming the VDS, and follow along as we review the steps necessary to leverage the TCP/IP stack for routed vMotion.



Session Important Points:

  • New in vSphere 6.0
    • NIOC 3.0
    • Multicast (IGMP) Snooping
    • Multiple TCP/IP Stack for vMotion
  • What about the Cisco Nexus 1000V?
    • VMware no longer sells the Nexus 1000V
    • Nexus 1000V is still supported in vSphere 6.0 – needs 5.2(1)SV3(1.4) or later
    • AVS Mode = not supported
    • Official Nexus 1000V official End of Availability –
    • IBM 5000V – no one using it
  • Long Distance vMotion
    • Can now vMotion across links up to *150ms* of latency – no more 10ms limit!
    • Keep in mind this can affect VM performance – do this in non-peak hours.
    • Stretching Layer 2 has always been difficult and usually not a great idea.
    • If a really busy VM, will we ever be able to stun the VM successfully long enough?
  • Protecting vCenter with a vDS
    • Can use vDS for everything – but do have to protect vCenter more now.
  • Multiple TCP/IP Stacks
    • previously couldn’t have different default gateways – only first came in in 5.5
    • now it’s in the UI with 6.0 – vMotion is biggest use case along with Storage vMotions
    • this is what allows cross-switch vMotion and cross-vCenter vMotion
    • Congestion Control Algorithms – New Reno & CUBIC
      • CUBIC only built for high speed long distance (coast to coast) – don’t change it unless VMware tells you to.
    • Custom Stacks & vxlan – don’t use it unless need it
  • Cross vSwitch vMotion
    • vDS to vSS is not supported – vDS includes metadata that vSS doesn’t support
    • Doesn’t change IP address
    • Can do any combo except vDS to vSS
    • Don’t forget about Layer 2 – this won’t change your IP
  • Cross vCenter vMotion
    • could do this before but was really cumbersome.
    • Supports shared or shared nothing migrations (if don’t want to buy VPLEX).
    • Even migrates things such as HR, DRS, Alarms, Events
    • Must be in the same SSO domain
    • This is NOT how you go from 5.5 to 6.0



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