These features are available with both types of virtual switches:
- Can forward L2 frames
- Can segment traffic into VLANs
- Can use and understand 802.1q VLAN encapsulation
- Can have more than one uplink (NIC Teaming)
- Can have traffic shaping for the outbound (TX) traffic
These features are available only with a Distributed Switch:
- Can shape inbound (RX) traffic
- Has a central unified management interface through vCenter Server
- Supports Private VLANs (PVLANs)
- Provides potential customization of Data and Control Planes
vSphere 5.x provides these improvements to Distributed Switch functionality:
- Increased visibility of inter-virtual machine traffic through Netflow.
- Improved monitoring through port mirroring (dvMirror).
- Support for LLDP (Link Layer Discovery Protocol), a vendor-neutral protocol.
- The enhanced link aggregation feature provides choice in hashing algorithms and also increases the limit on number of link aggregation groups.
- Additional port security is enabled through traffic filtering support.
- Improved single-root I/O virtualization (SR-IOV) support and 40GB NIC support.
vSphere 6.x provides these improvements to Distributed Switch functionality:
- Network IO Control New support for per virtual machine Distributed vSwitch bandwidth reservations to guarantee isolation and enforce limits on bandwidth.
- Multicast Snooping - Supports IGMP snooping for IPv4 packet and MLD snooping for IPv6 packets in VDS. Improves performance and scale with multicast traffic.
- Multiple TCP/IP Stack for vMotion - Allows vMotion traffic a dedicated networking stack. Simplifies IP address management with a dedicated default gateway for vMotion traffic.
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