Configuring Class of Service
151
CoS Trust Configuration
Use the CoS Trust Configuration page to apply an interface shaping rate to all ports or to a specific
port.
To display the CoS Trust Configuration page, click
QoS
>
Class of Service
in the navigation pane,
and then click the
Interfaces
tab.
Figure 109. CoS Trust Configuration Page
Table 82. CoS Trust Configuration Fields
Configuring the Trust Mode and Shaping Rate on an Interface
To configure the trust mode and shaping rate for one or more interfaces:
1.
Select each interface to configure and click
Edit
. If you select multiple interfaces, the same settings
are applied to all selected interfaces.
The Edit Interface Configuration page appears.
Field
Description
Interface
Selects the CoS configurable interface to be affected by the Interface Shaping Rate. Select
Global to apply a rate to all interfaces. Select an individual port to override the global setting.
Trust Mode
The trust mode for ingress traffic on the interface, which is one of the following:
untrusted – The interface ignores any priority designations encoded in incoming packets,
and instead sends the packets to a traffic queue based on the ingress port's default prior-
ity.
802.1p – The port accepts at face value the 802.1p priority designation encoded within
packets arriving on the port.
IP DSCP – The port accepts at face value the IP DSCP priority designation encoded
within packets arriving on the port.
Shaping Rate
Sets the limit on how much traffic can leave a port. The limit on maximum transmission
bandwidth has the effect of smoothing temporary traffic bursts over time so that the
transmitted traffic rate is bounded. The specified value represents a percentage of the
maximum negotiated bandwidth.