Create Policy Maps - Dell Force10 S4810P Configuration Manual

Specify WRED drop precedence
Specify WRED drop precedence
Specify a WRED profile to yellow and/or green traffic using the command
mode. See Apply a WRED profile to

Create Policy Maps

There are two types of policy maps: input and output.
Create Input Policy Maps
There are two types of input policy-maps: Layer 3 and Layer 2.
1. Create a Layer 3 input policy map using the command
Create a Layer 2 input policy map by specifying the keyword
2. Once you create an input policy map, do one or more of the following:
• Apply a class-map or input QoS policy to a queue
• Apply an input QoS policy to an input policy map
• Honor DSCP values on ingress packets
• Honoring dot1p values on ingress packets
3. Apply the input policy map to an interface.
FTOS Behavior: On ExaScale, FTOS cannot classify protocol traffic on a Layer 2 interface using Layer 3 policy
map. The packets always take the default queue, Queue 0, and cannot be rate-policed.
Apply a class-map or input QoS policy to a queue
Assign an input QoS policy to a queue using the command
Apply an input QoS policy to an input policy map
Apply an input QoS policy to an input policy map using the command
POLICY-MAP-IN mode.
Honor DSCP values on ingress packets
FTOS provides the ability to honor DSCP values on ingress packets using Trust DSCP feature. Enable this
feature using the command
definitions, and indicates to which queues FTOS maps DSCP values. When Trust DSCP is configured the
matched packets and matched bytes counters are not incremented in
is supported only on platform
traffic.
from POLICY-MAP-IN mode.
trust diffserv
e
from QOS-POLICY-OUT
wred
from CONFIGURATION mode.
policy-map-input
with the
layer2 policy-map-input
from POLICY-MAP-IN mode.
service-queue
policy-aggregate
Table 39-5
show qos statistics
command.
from
lists the standard DSCP
.
Quality of Service (QoS) | 831