6.7

Mark Trac on a Distributed Port Group or Uplink Port Group
Assign priority tags to traffic, such as VoIP and streaming video, that has higher networking requirements
for bandwidth, low latency, and so on. You can mark the traffic with a CoS tag in Layer 2 of the network
protocol stack or with a DSCP tag in Layer 3.
Priority tagging is a mechanism to mark traffic that has higher QoS demands. In this way, the network can
recognize different classes of traffic. The network devices can handle the traffic from each class
according to its priority and requirements.
You can also re-tag traffic to either raise or lower the importance of the flow. By using a low QoS tag, you
can restrict data tagged in a guest operating system.
Procedure
1 Locate a distributed port group or an uplink port group in the vSphere Web Client.
a Select a distributed switch and click the Networks tab.
b Click Distributed Port Groups to see the list of distributed port groups, or click Uplink Port
Groups to see the list of uplink port groups.
2 Right-click the port group and select Edit Settings.
3 Select Traffic filtering and marking.
4 If traffic filtering and marking is disabled, enable it from the Status drop-down menu.
5 Click New to create a new rule, or select a rule and click Edit to edit it.
6 In the network traffic rule dialog box, select the Tag option from the Action drop-down menu.
7 Set the priority tag for the traffic within the scope of the rule.
Option Description
CoS value Mark the traffic matching the rule with a CoS priority tag in network Layer 2.
Select Update CoS tag and type a value from 0 to 7.
DSCP value Mark the traffic associated with the rule with a DSCP tag in network Layer 3.
Select Update DSCP value and type a value from 0 to 63.
vSphere Networking
VMware, Inc. 116