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Before we start• Get    involved!• Askquestions—this is your time and I want you to get the  most out of it• If   you use ...
vSphere NetworkingChallenges and SolutionsHow VMware vSphere is shaping thedirection of the networking industry     Scott ...
Agenda•A   brief review of terminology• Traffic   consolidation• Network    management and troubleshooting• VLANs    and ex...
A Brief Review of Terminology• vSwitch    (and Distributed vSwitch)• Port   group (and Distributed Port Group)• Uplink• VL...
Traffic Consolidation• Thereare now multiple OS instances and multiple traffic types contending for bandwidth• There   is n...
Traffic Consolidation(continued)• Establishednetwork vendors are driving higher bandwidth standards (40 GE and 100 GE prod...
Network Management andTroubleshooting• Movement    of the access layer into the hypervisor means a loss of visibility, con...
VLANs and Expanding L2Domains• Physical   systems now need access to multiple VLANs  • VLANs must be provisioned to every ...
VLANs and Expanding L2Domains (continued)• Some switch vendors address this through dynamic VLAN pruning and vCenter integ...
Stretched VLANs• The desire to do long-distance vMotion means L2 domains stretched over distance•A   variety of technologi...
Multi-Tenancy and IncreasedScale• The    12-bit VLAN address space isn’t big enough• Hybridcloud solutions means individua...
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vSphere Networking Challenges and Solutions

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This presentation discusses some of the networking challenges created by the pervasive adoption of server virtualization with VMware vSphere, and some of the solutions that are appearing in response.

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vSphere Networking Challenges and Solutions

  1. 1. Before we start• Get involved!• Askquestions—this is your time and I want you to get the most out of it• If you use Twitter, feel free to tweet about today’s session• Thispresentation will be made available online after the event
  2. 2. vSphere NetworkingChallenges and SolutionsHow VMware vSphere is shaping thedirection of the networking industry Scott Lowe, VCDX 39 / CTO, VMware Affinity Team, EMC vExpert, Author, Blogger, Geek http://blog.scottlowe.org / Twitter: @scott_lowe
  3. 3. Agenda•A brief review of terminology• Traffic consolidation• Network management and troubleshooting• VLANs and expanding L2 domains• Stretched VLANs• Multi-tenancy and increased scale
  4. 4. A Brief Review of Terminology• vSwitch (and Distributed vSwitch)• Port group (and Distributed Port Group)• Uplink• VLAN• Virtual NIC
  5. 5. Traffic Consolidation• Thereare now multiple OS instances and multiple traffic types contending for bandwidth• There is new virtualization-specific traffic (vMotion, FT)• This requires new tools to help manage contention • Network I/O Control (at the vSphere layer) • QoS (at the network layer) • Virtualization-integrated switching solutions (more on that in a bit)
  6. 6. Traffic Consolidation(continued)• Establishednetwork vendors are driving higher bandwidth standards (40 GE and 100 GE products recently introduced)• Some new and upcoming vendors are using alternate technologies (consider Xsigos use of InfiniBand, for example)
  7. 7. Network Management andTroubleshooting• Movement of the access layer into the hypervisor means a loss of visibility, control, and (in some cases) functionality• VMware has added functionality to distributed vSwitches to help with some of this (NetFlow, port mirroring)• Other solutions exist • Hypervisor bypass (think Cisco VIC, SR-IOV) • More full-featured virtual switch (think Nexus 1000V)
  8. 8. VLANs and Expanding L2Domains• Physical systems now need access to multiple VLANs • VLANs must be provisioned to every physical host that might run a workload on that VLAN • Required in order to support vMotion• This results in very large L2 (broadcast) domains• Large L2 domains generally not recommended by network architects
  9. 9. VLANs and Expanding L2Domains (continued)• Some switch vendors address this through dynamic VLAN pruning and vCenter integration• In the long term, new technologies are being developed • An example is Edge Virtual Bridging (EVB), standardized as 802.1Qbg • EVB allows VLANs to be provisioned (and deprovisioned) dynamically as needed
  10. 10. Stretched VLANs• The desire to do long-distance vMotion means L2 domains stretched over distance•A variety of technologies exist to enable stretched VLANs: • Ethernet over MPLS (EoMPLS) • Overlay Transport Virtualization (OTV)• Stretched VLANs also affect Layer 3 routing behaviors, driving the need for technologies like LISP
  11. 11. Multi-Tenancy and IncreasedScale• The 12-bit VLAN address space isn’t big enough• Hybridcloud solutions means individual customers need to be properly separated and segregated• This drives the development of new protocols • Virutal eXtensible Local Area Network (VXLAN) • NetworkVirtualization using Generic Routing Encapsulation (NVGRE) • Stateless Transport Tunneling (STT)
  12. 12. Questions &Answers
  13. 13. Thank You

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