Example: Port-Type Qos Profile Attachment - Juniper JUNOSE SOFTWARE FOR E SERIES 11.3.X - QUALITY OF SERVICE CONFIGURATION GUIDE 2010-09-22 Configuration Manual

JunosE 11.3.x Quality of Service Configuration Guide
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Example: Port-Type QoS Profile Attachment

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All forwarding interfaces stacked above the port are within the scope of the attachment,
so all IP interfaces stacked above the port will be provisioned with a queue in the
priority-data traffic class, shaped to 64 Kbps.
The QoS profile attached at subinterface ATM 11/0.2 contains the following two rules:
host1(config)#qos-profile atmVc
host1(config-qos-profile)#ip queue traffic-class priority-data scheduler-profile 1mbps
host1(config-qos-profile)#ip queue traffic-class voice-over-ip
host1(config-qos-profile)#exit
The queue rule for {interface type IP, traffic-class priority-data} in the QoS profile that
is attached to ATM 11/0.2 effectively overrides the queue rule for the same interface type
and traffic class in the port-attached QoS profile on ATM11.0.
The second queue rule, which is for the voice-over-ip traffic-class, is not conflicting. In
this configuration, the provider has configured a 64 Kbps priority-data queue for each IP
interface stacked above the port. But the IP interface above the ATM 11/0.2 attachment
provides 1 Mbps for priority-data, and also has a second queue provisioned for VoIP.
NOTE: When a QoS profile is attached to an interface, the router first searches
to determine if a munged QoS profile already exists. If you modify an existing
QoS profile, the router automatically updates all munged QoS profiles that
are dependent on the modified profile.
For more information about the munge algorithm and 802.3ad link aggregation
interfaces, see Munged QoS Profiles and Load Balancing on page 176
In this example, three ATM subinterfaces are configured on an ATM port:
ATM 11/0.1—QoS profile qp1 is attached
ATM 11/0.2—QoS profile qp2 is attached
ATM 11/0.3—No QoS profile is attached
The major ATM interface, 11/0, does not have a QoS profile explicitly attached. Therefore,
by default the atm-default QoS port-type profile is attached.
Copyright © 2010, Juniper Networks, Inc.