JUNOSe 9.1.x Quality of Service Configuration Guide > Configuring Hierarchical QoS Parameters > Guidelines for Configuring Hierarchical Parameters

Guidelines for Configuring Hierarchical Parameters

Use the following guidelines when specifying a hierarchical parameter:

• You can specify only a subset of the instance-interface types that are supported for non-hierarchical parameters. The following output lists the instance-interface types that are supported:

host1(config)#qos-parameter-define hierarchical-parameter hierarchical

host1(config-qos-parameter-define)#instance-interface-type ?

  atm-vc          ATM Virtual Circuit (VC)

  ip              IP interface

  ipv6            IP version 6 interface

  l2tp-session    L2tp session interface

  vlan            VLAN subinterface

• You can specify only one instance-interface type per hierarchical parameter. For example:

host1(config)#qos-parameter-define hierarchical-parameter hierarchical

host1(config-qos-parameter-define)#instance-interface-type ip

host1(config-qos-parameter-define)#instance-interface-type vlan

% only one instance-interface-type can be specified for a hierarchical parameter

• Hierarchical instance-interface types cannot stack above the highest controlled-interface type. For example:

host1(config)#qos-parameter-define hierarchical-parameter hierarchical

host1(config-qos-parameter-define)#controlled-interface-type ip

host1(config-qos-parameter-define)#instance-interface-type vlan

% hierarchical instance-interface-type vlan cannot stack above 

controlled-interface-type ip

In contrast, a non-hierarchical instance-interface type cannot stack above the lowest controlled-interface type (vlan). For example:

host1(config)#qos-parameter-define non-hierarchical-parameter

host1(config-qos-parameter-define)#controlled-interface-type vlan

host1(config-qos-parameter-define)#instance-interface-type ip

% instance-interface-type ip cannot stack above the lowest controlled-interface-type

• You must specify a subscriber-interface type that is identical to the instance-interface type that you specified.

Related Topics

• Configuring a Parameter Definition to Calculate Hierarchical Instances