ELTEX ESR-1000 - 10 QoS management; 10.1 Basic QoS

ESR series service routers.ESR-Series. User manual
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10 QoS management
Basic QoS
Configuration algorithm
Configuration example
Advanced QoS
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.
10.1 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).
10.1.1 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 (optional).
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.