Table 15: Shadow Node Consumption Of Node And Queue Resources; Configuring Shadow Nodes - Juniper JUNOSE 11.1.X - QUALITY OF SERVICE CONFIGURATION GUIDE 3-21-2010 Configuration Manual

JUNOSe 11.1.x Quality of Service Configuration Guide
Level 1 queues stack directly above the port; level 2 queues stack above a node and
the port. The router implicitly creates the level 1 and level 2 queues.
Shadow node queues stack above a port node, a level 1 node, and a shadow node.
Therefore, the shadow node queue is at level 3. The router does not implicitly create
any nodes for the queues.
You can configure 64,000 level 1 queues using shadow nodes by specifying the group
and shadow node rules in the QoS profile. Each level 1 queue is stacked above the
port, the group node, and the shadow node; therefore, it requires 64,002 descriptors.
Table 15 on page 152 lists the number of nodes required to create a queue.

Table 15: Shadow Node Consumption of Node and Queue Resources

Related Topics

Configuring Shadow Nodes

Before you configure shadow nodes:
To add a shadow node to a QoS profile:
1.
2.
3.
152
Configuring Shadow Nodes
Level 1
Queues
(at Port)
3
Required Nodes
Managing System Resources for Nodes and Queues on page 127
Scaling Subscribers on the TFA ASIC with QoS on page 128
Configure the traffic classes.
See "Configuring Traffic Classes That Define Service Levels" on page 14.
Configure the queuing hierarchy.
See "Configuring Queue Profiles to Manage Buffers and Thresholds" on page 22.
Configure the scheduler hierarchy and shaping with scheduler profiles.
See "Configuring a Scheduler Hierarchy" on page 47.
Create a QoS profile and enter QoS Profile Configuration mode.
host1(config)#qos-profile shadowNode
host1(config-qos-profile)#
Configure a scheduler node for each interface of the specified type.
host1(config-qos-profile)#atm node scheduler-profile default
Configure a shadow node for each interface of the specified type.
Level 2
Queues Shadow Node
(at Node) Queue
2 1