ESR service routers. ESR-Series. Functionality description. Version 1.12.0
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4 QoS management
Configuration algorithm
Configuration example
Configuration algorithm
Configuration example
QoS (Quality of Service) is a technology that provides various traffic classes with various service priorities.
QoS service allows network applications to co-exist in a single network without altering the bandwidth of other
applications.
4.1 Basic QoS
In basic mode on ESR routers, classification (routing traffic to the queue) and relabeling works only on the
input (QoS must be enabled on the interface through which traffic arrives)
4.1.1 Configuration algorithm
Step
Description
Command
Keys
1
Enable QoS on the interface/tunnel/
network bridge.
If QoS policy is not assigned on the
interface, the interface operates in
BasicQoS mode.
esr(config-if-gi)#
qos enable
2
Set the trust mode for 802.1p and
DSCP codes values in incoming
packets. (optionally)
esr(config)# qos
trust <MODE>
<MODE> – trust mode for 802.1p and
DSCP codes values, takes one of the
following values:
dscp
– trust mode for DSCP
codes values in IP header. Not
IP packets will be sent to the
default queue.
cos
– trust mode for 802.1p
codes values in 802.1q tag.
Untagged packets will be sent
to the default queue.
cos-dscp
– trust mode for
DSCP codes values in IP
packets and for 802.1p codes
values in other packets.