Munged Qos Profile Overview - 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

Munged QoS Profile Overview

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atm vp-tunnel
encapsulation vlan
interface
qos-port-type-profile
qos-profile
svlan id
svlan qos-profile
QoS profile attachments affect the queuing configuration of all the forwarding interfaces
stacked above the attachment point. The subtree of the interface hierarchy stacked
above the attachment point is the scope of the attachment. When multiple QoS profiles
are attached beneath a forwarding interface, the forwarding interface lies in the scope
of all the QoS profiles. Rules from all the QoS profiles are combined in a process called
mungeing. The set of rules used for a given forwarding interface is called the munged
QoS profile.
When a QoS profile is attached to an interface, the router searches the interface stack,
from the point of attachment down to the port interface at the base of the interface
hierarchy, to find all QoS profiles attached under that interface. The rules are combined
to form the munged QoS profile. The router reconfigures queues for all forwarding
interfaces in the scope of the attachment to conform to the munged profile.
The munge algorithm works as follows:
Start with the rules in the QoS profile being attached.
1.
Traverse down the stack of interfaces until another QoS profile attachment is found.
2.
Add rules from the lower-attached QoS profile to the munged QoS profile. Conflicting
3.
rules from the lower-attached QoS profile are not added: rules in higher-attached
QoS profiles override or eclipse rules in lower-attached QoS profiles.
Repeat Steps 2 and 3 until a port interface is reached at the bottom of the interface
4.
stack.
a. If there is a QoS profile attached at the port, add the profile's rules to the munged
QoS profile, and the munge algorithm is then complete.
b. If there is no QoS profile attached at the port, then locate the QoS profile indicated
in the qos-port-type-profile command that corresponds to the interface type of
the port. For example, if the port is an ATM interface, the default QoS port-type
profile for type ATM is named atm-default. Add the rules in the QoS port-type
profile to the munged QoS profile.
The entries in the QoS profile specified in the corresponding qos-port-type-profile
command have the lowest precedence.
Copyright © 2010, Juniper Networks, Inc.