6.0

5 Select Enable IPv6 support on this host and click OK.
6 Reboot the host.
VLAN Configuration
Virtual LANs (VLANs) enable a single physical LAN segment to be further isolated so that groups of ports
are isolated from one another as if they were on physically different segments.
Configuring ESXi with VLANs is recommended for the following reasons.
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It integrates the host into a pre-existing environment.
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It isolates and secures network traffic.
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It reduces network traffic congestion.
You can configure VLANs in ESXi using three methods: External Switch Tagging (EST), Virtual Switch
Tagging (VST), and Virtual Guest Tagging (VGT).
With EST, all VLAN tagging of packets is performed on the physical switch. Host network adapters are
connected to access ports on the physical switch. Port groups that are connected to the virtual switch must
have their VLAN ID set to 0.
With VST, all VLAN tagging of packets is performed by the virtual switch before leaving the host. Host
network adapters must be connected to trunk ports on the physical switch. Port groups that are connected
to the virtual switch must have a VLAN ID between 1 and 4094.
With VGT, all VLAN tagging is done by the virtual machine. VLAN tags are preserved between the virtual
machine networking stack and external switch when frames pass to and from virtual switches. Host
network adapters must be connected to trunk ports on the physical switch. For a standard switch the VLAN
ID of port groups with VGT must be set to 4095. For a distributed switch the VLAN trunking policy must
include the range of the VLANs to which virtual machines are connected.
NOTE When using VGT, you must have an 802.1Q VLAN trunking driver installed on the virtual machine.
Working With Port Mirroring
Port mirroring allows you to mirror a distributed port's traffic to other distributed ports or specific physical
switch ports.
Port mirroring is used on a switch to send a copy of packets seen on one switch port (or an entire VLAN) to
a monitoring connection on another switch port. Port mirroring is used to analyze and debug data or
diagnose errors on a network.
vSphere Administration with the vSphere Client
286 VMware, Inc.