Not every one has noticed the new types of vmkernel interfaces in vSphere 6. Here is a quick note to identify the types of interfaces available:
- vMotion traffic – Required for vMotion – Moves the state of virtual machines (active datadisk svMotion, active memory and execution state) during a vMotion
- Provisioning traffic – Not required will use management network if not setup – cold migration, cloning and snapshot creation (powered off virtual machines = cold)
- Fault tolerance traffic (FT) – Required for FT – Enables fault tolerance traffic on the host – only a single adapter may be used for FT per host
- Management traffic – Required – Management of host and vCenter server
- vSphere replication traffic – Only needed if using vSphere replication – outgoing replication data from ESXi host to vSphere replication server
- vSphere replication NFC traffic – Only needed if using vSphere replication – handles incoming replication data on the target replication site
- Virtual SAN – Required for VSAN – virtual san traffic on the host
The purpose of the multiple interface types is you are now allowed to route all these types of traffic in 6. Allowing you to segment this traffic even more. (In ESXi 5.xx only management had a TCP/IP stack.) I recommend that you create unique subnets for each of these types of traffic you can use. In addition many of them support multiple concurrent nic’s (like multi-nic vMotion) which can improve performance. When possible setup multi-nic.
© 2016, Joseph Griffiths. All rights reserved.