Chapter 42 Configuring PFC QoS

Common QoS Scenarios

This example shows how to set the transmit-queue size ratio for Gigabit Ethernet port 1/2:

Router# configure terminal

Enter configuration commands, one per line. End with CNTL/Z.

Router(config)# interface gigabitethernet 1/2

Router(config-if)#wrr-queue queue-limit 75 15

Router(config-if)# end

Router#

This example shows how to verify the configuration:

Router# show queueing interface gigabitethernet 1/2 include queue-limit

queue-limit ratios: 75[queue 1] 25[queue 2] Router#

Common QoS Scenarios

This section provides sample configurations for some common QoS scenarios. If you already know how to configure PFC QoS for your network or if you need specific configuration information, see the other sections of this chapter.

The scenarios in this section are based on a sample network that is described in the “Sample Network Design Overview” section on page 42-112. This section uses this sample network to describe some regularly used QoS configurations.

These sections describe some common QoS scenarios:

•Sample Network Design Overview, page 42-112

•Classifying Traffic from PCs and IP Phones in the Access Layer, page 42-113

•Accepting the Traffic Priority Value on Interswitch Links, page 42-116

•Prioritizing Traffic on Interswitch Links, page 42-117

•Using Policers to Limit the Amount of Traffic from a PC, page 42-120

Sample Network Design Overview

This sample network is based on a traditional campus network architecture that uses Catalyst 6500 series switches in the access, distribution, and core layers. The access layer provides 10/100 Ethernet service to desktop users. The network has Gigabit Ethernet links from the access layer to the distribution layer and Gigabit or 10 Gigabit Ethernet links from the distribution layer to the core layer.

This is the basic port configuration:

Access Layer

switchport mode access switchport access vlan 10 switchport voice vlan 110

Distribution and Core Interswitch Links

switchport mode trunk

 

Cisco 7600 Series Router Cisco IOS Software Configuration Guide, Release 12.2SX

42-112

OL-4266-08

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Cisco Systems OL-4266-08 Sample Network Design Overview, Access Layer, Distribution and Core Interswitch Links, 42-112
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OL-4266-08 specifications

Cisco Systems OL-4266-08 is a robust and versatile certification that focuses on the essentials of implementing and troubleshooting Cisco collaborations solutions. As enterprises increasingly rely on unified communications, having professionals who are knowledgeable in the latest Cisco technologies becomes a necessity. This certification is part of the Cisco Certified Network Associate (CCNA) program, which serves as a foundational stepping stone for individuals aspiring to build a career in networking and collaboration technologies.

One of the main features of OL-4266-08 is its emphasis on collaboration foundations, which includes an understanding of voice, video, messaging, and conferencing technologies. Professionals who obtain this certification demonstrate proficiency in deploying, configuring, and troubleshooting Cisco collaboration solutions like Cisco Unified Communications Manager and Cisco Webex. This knowledge is critical as businesses seek to enhance communication and productivity through integrated systems.

Technologically, OL-4266-08 covers a wide array of essential concepts, including IP telephony, voicemail, and collaborative tools. Candidates learn about the architecture of unified collaboration systems, involving integration with routing and switching networks. Additionally, it delves into security protocols to ensure secure transmissions of voice and video data, thereby protecting sensitive corporate communication.

In terms of characteristics, OL-4266-08 is designed to be both comprehensive and practical. The certification emphasizes hands-on experience, which is essential for understanding real-world applications of Cisco technologies. The coursework provides extensive exposure to simulations and labs that mimic actual network environments. This hands-on approach enables candidates to troubleshoot issues effectively using Cisco's troubleshooting tools and methodologies.

Moreover, the certification aligns with industry standards, ensuring that individuals gain relevant and in-demand skills. Given the evolving landscape of network technologies, OL-4266-08 prepares individuals for future growth and specialization in various areas, including cloud collaboration and Internet of Things (IoT) communications.

In conclusion, Cisco Systems OL-4266-08 equips networking professionals with the necessary skills to implement and support Cisco collaboration solutions. The focus on hands-on experience, along with in-depth coverage of technology and security protocols, makes it a valuable certification in the fast-paced world of network communications. With the rise of remote work and digital collaboration, this certification is pivotal for anyone looking to enhance their career in networking and technology.
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