Tag Archives: QOS

VMware vSphere and Cisco UCS vNIC Configuration

Configuration of vNIC / Loadbalancing / Failover / QOS

Below is a typical configuration of vSphere ESX vNIC assignment correlating to the UCS Fabric Interconnect.

Management Port Group vMotion Port Group Fault Tolerance Port Group Production Virtual Machine Port Group Storage HBA’s
UCS   Fabric A 10GB vNic 0 (Active) vNic 2 (Standby) vNic 4 (Active) vNic 6 (Active) HBA 1 (Active)
UCS   Fabric B 10GB vNic 1 (Standby) vNic 3 (Active) vNic 5 (Standby) vNic 7 (Active) HBA 2 (Active)
UCS   QOS Priority Bronze Silver Gold Best Effort FC
UCS   QOS Weight % 0 % 11 % 11 % 33% 34 %
Min   / Maxbandwidth   using   both fabrics  Min = 1GBMax = 1GB Min = 1GBMax = 10 GBMax is limited to QOS Priority  Min = 1GBMax = 10 GBMax is limited to QOS Priority  Min = 6GBMax  = 10 GBMax is limited to QOS Priority  Min = 8GBMax = 10GBMax is limited to QOS Priority 
VMware   Load Balancing Route based on originating virtual port Id N/A N/A dVS = Route based on physical NIC loadvSS = Route based on originating virtual port Id

 

Active Active(round Robin)
VMware   Failover Policy Active/Standby Active/Standby Active/Standby Active / Active N/A

1)      Note, that route based on IP hash is not supported by UCS when used with either a VMware Standard vSwitch or Distributed vSwitch. You can use route based on IP hash when used with a nexus 1000v.

2)      With the above configuration the production vNics are both active and separated between two fabrics. The uplinks from the fabrics should then be configured as a Multi Chassis Ether-channel to the core switches.

3)      By applying UCS QOS policies, there is guaranteed minimum bandwidth assigned per vNic, and also has the ability to burst higher if is ever needed, but will not affect other vNic’s that have a higher priority.

4)      If a dVS (VMware distributed virtual)  switch is used, then the “route based on physical NIC load “  load balancing algorithm should be used to load balance active/active uplinks to the fabric interconnects.

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