Alteon OS Application Guide

802.1p Configuration Example

1. Configure a port’s default 802.1p priority.

>> Main# cfg/port EXT1

(Select port)

>> Port EXT1# 8021ppri

(Set port’s default 802.1p priority)

Current 802.1p priority: 0

 

Enter new 802.1p priority [0-7]: 1

 

>>Port EXT1# ena

>>Port EXT1# apply

2.Map the 802.1p priority value to a COS queue and set the COS queue scheduling weight.

>> Main# cfg/qos/8021p

(Select 802.1p menu)

>> 802.1p# priq

(Set COS queue assignments)

Enter priority [0-7]: 1

 

Current COS queue (for priority 1): 0

 

Enter new COS queue (for priority 1) [0-1]: 1

 

>> 802.1p# qweight

(Set COS queue weights)

Enter COS queue [0-1]: 1

 

Current weight (for COS queue 1): 3

 

Enter new weight (for COS queue 1) [0-15]: 10

 

>> 802.1p# apply

 

Queuing and Scheduling

The GbESM has eight output Class of Service (COS) queues per port, into which each packet is placed. Each packet’s 802.1p priority determines its COS queue, except when an ACL action sets the COS queue of the packet.

Each COS queue uses Weighted Round Robin (WRR) scheduling, with user configurable weight from 1 to 15. The weight of 0 (zero) indicates strict priority, which might starve the low priority queues.

You can configure the following attributes for COS queues: „ Map 802.1p priority value to a COS queue

„ Define the scheduling weight of each COS queue

Use the 802.1p menu (/cfg/qos/8021p) to configure COS queues.

140 „ Chapter 7: Quality of Service

42C4911, January 2007

Page 139 Page 141
Page 140
Image 140
Nortel Networks 42C4911 Queuing and Scheduling, 802.1p Configuration Example, Configure a port’s default 802.1p priority
Page 139 Page 141

42C4911 specifications

Nortel Networks 42C4911 is a key hardware component designed to meet the needs of modern telecommunications infrastructure. As part of Nortel's extensive portfolio, the 42C4911 has made a significant impact on network design and operation, particularly in enterprises requiring reliable and efficient communication solutions.

One of the standout features of the 42C4911 is its modularity. This allows for flexible configurations and upgrades, enabling organizations to adapt to changing technology requirements and business demands. The design philosophy behind the 42C4911 emphasizes scalability, allowing users to start with a basic setup and expand it as their networking needs grow. This feature is particularly appealing to medium and large enterprises that anticipate increased data and communication requirements over time.

In terms of technology, the 42C4911 supports various telecommunications standards, making it versatile for multiple applications. It typically integrates with other Nortel equipment and can work with third-party devices, ensuring seamless interoperability across different platforms. This is critical as organizations look to create unified communications systems that can handle voice, data, and video traffic efficiently.

The 42C4911 is known for its robust performance and reliability. It is designed to operate continuously under demanding conditions, which is essential for organizations that rely on constant connectivity for their operations. Its built-in redundancy features help safeguard against potential failures, thus enhancing the overall stability of the network. This reliability is further complemented by Nortel's commitment to high-quality manufacturing standards, ensuring that users receive a durable and efficient product.

Security is another major consideration for any networking device, and the 42C4911 provides advanced security features to protect sensitive data. With increasing cybersecurity threats, organizations prioritize devices that offer strong encryption and access control mechanisms. The 42C4911 addresses these needs while facilitating secure communication channels for users, which is essential in today's increasingly interconnected world.

Overall, the Nortel Networks 42C4911 stands out as a versatile and powerful component in the telecommunications landscape. Its modular design, compatibility with diverse technologies, reliability, and emphasis on security make it an appealing choice for organizations looking to enhance their networks. As companies continue to navigate the complexities of communication, devices like the 42C4911 play a crucial role in ensuring that they remain connected and efficient.
Top Page Image Contents