Chapter 55 Configuring a VoIP Network

Configuring VoIP on a Switch

This example shows how to set the phone access port to the untrusted mode:

Console> (enable) set port qos 3/7 trust-ext untrusted

Port in the phone device connected to port 3/7 is configured to be untrusted.

Console> (enable)

Setting the Phone Access Port CoS Value

To set the phone access port CoS value, perform this task in privileged mode:

Task

Command

 

 

Set the phone access port CoS value.

set port qos mod/ports cos-ext cos_value

 

 

This example shows how to set the Layer 2 CoS value that is used by a phone access port in untrusted mode:

Console> (enable) set port qos 2/1 cos-ext 3

Port 2/1 qos cos-ext set to 3.

Console> (enable)

Verifying the Phone Access Port QoS Configuration

To verify the phone access port QoS configuration, perform this task in normal mode:

Task

Command

 

 

Verify the phone access port QoS configuration.

show port qos [mod[/port]]

 

 

This example shows how to verify the phone access port QoS configuration:

Console> (enable) show

port qos 3/4

<...

Output Truncated...

>

Port

Ext-Trust Ext-Cos

----- --------- -------

3/4

untrusted

0

<...

Output Truncated...

>

Configuring a Trusted Boundary to Ensure Port Security

This section describes the trusted boundary that is used to prevent security problems if users disconnect their PCs from the networked Cisco IP Phones and plug them directly into the switch port to take advantage of the QoS trust-cosswitch port settings.

These sections describe the trusted boundary:

•Supported Cisco IP Phones, page 55-34

•QoS and Cisco IP Phone Configuration, page 55-34

•QoS, Cisco IP Phone, and PC Configuration, page 55-34

•Trusted Boundary Configuration Guidelines, page 55-35

•Configuring a Trusted Boundary, page 55-36

 

 

Catalyst 6500 Series Switch Software Configuration Guide—Release 8.7

 

 

 

 

 

 

OL-8978-02

 

 

55-33

 

 

 

 

 

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Cisco Systems OL-8978-02 Configuring a Trusted Boundary to Ensure Port Security, Setting the Phone Access Port CoS Value
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OL-8978-02 specifications

Cisco Systems OL-8978-02 is a comprehensive training curriculum designed to enhance the skills and knowledge of network professionals seeking to advance their careers in network management and security. This curriculum offers a significant focus on Cisco networking technologies and concepts, ensuring that learners are well-equipped to handle the intricacies of modern network environments.

One of the primary features of OL-8978-02 is its in-depth coverage of foundational networking concepts, which are crucial for effective network administration. The curriculum includes detailed modules on networking fundamentals, such as OSI and TCP/IP models, LAN and WAN architectures, and network protocols. This solid foundation enables learners to understand how different networking components interact and function together, forming the backbone of corporate and enterprise environments.

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Another distinguishing characteristic of the OL-8978-02 curriculum is its emphasis on hands-on experience. The program often includes practical labs and simulations, allowing participants to apply theoretical knowledge in real-world scenarios. This experiential learning approach is pivotal for solidifying skills and boosting confidence in network management tasks.

Furthermore, OL-8978-02 addresses the latest advancements in networking technology, including software-defined networking (SDN) and cloud computing. By introducing emerging technologies, this curriculum ensures that professionals remain ahead of the curve, ready to adapt to the future demands of networking.

Finally, Cisco Systems OL-8978-02 positions itself not only as an educational tool but also as a career catalyst, providing learners with skills that are highly sought after in the IT job market. Upon completion, participants often find themselves well-prepared for various Cisco certifications, which can enhance their employability and professional growth opportunities in a competitive landscape. Through its thorough approach, OL-8978-02 plays a vital role in shaping the next generation of network professionals.
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