Log in
|
How to Buy
|
Contact Us
|
United States (Change)

# Technical Documentation

Download Software
Research a Problem
Case Management
Contract & Product Management
Technical Documentation
Documentation Archive
Report Documentation Bug
Enterprise MIBs
File Format Help
Glossary
Portable Libraries
End-of-Life Products
Contact Support
Guidelines and Policies
Security Resources
Feedback

## Documentation Search

Advanced Search | Search Tips

## Related Documentation

- Managing System Resources for Nodes and Queues
- Scaling Subscribers on the TFA ASIC with QoS

# Managing System Resources for Shadow Nodes

Each ASIC hardware type provides different node and queue resources.

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 1 lists the number of nodes required to create a queue.

Table 1: Shadow Node Consumption of Node and Queue Resources

| Level 1 Queues (at Port) | Level 2 Queues (at Node) | Shadow Node Queue
--- | --- | --- | ---
Required Nodes | 3 | 2 | 1

## Related Documentation

- Managing System Resources for Nodes and Queues
- Scaling Subscribers on the TFA ASIC with QoS

#### Published: 2010-12-15

﻿
Site Map / RSS Feeds / Careers / Accessibility / Feedback / Privacy & Policy / Legal Notices
Copyright© 1999-2011 Juniper Networks, Inc. All rights reserved.

## Choose Country

### North America

- United States

### Europe

- Deutschland - Germany
- España - Spain
- France
- Italia - Italy
- Россия - Russia
- United Kingdom

### Asia Pacific

- Asean Region (Vietnam, Indonesia, Singapore, Malaysia)
- Australia
- 中国 - China
- India
- 日本 - Japan
- 대한민국 - Korea
- 台灣 - Taiwan

Remember my choice
Help
|
My Account
|
Log Out