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Nortel Networks 42C4911 manual Configuring Multiple Spanning Tree Groups, # /cfg/l2/vlan2, Stg

Models: 42C4911

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Alteon OS Application Guide

„VLAN 3 Participation

For VLAN 3 you can have GbE Switch Module B or application switch C to be the root bridge. If switch B is the root bridge for VLAN 3, Spanning Tree Group 2, then switch B transmits the BPDU out from port 18. Application switch C receives this BPDU on port 8 and is identified as participating in VLAN 3, Spanning Tree Group 2. Since application switch C has no additional ports participating in Spanning Tree Group 2, this BPDU is not forwarded to any additional ports and GbE Switch Module B remains the designated root.

Configuring Multiple Spanning Tree Groups

This configuration shows how to configure the three instances of Spanning Tree Groups on the switches A, B, C, and D illustrated in Figure 5-2 on page 112.

By default Spanning Trees 2-126 are empty, and Spanning Tree Group 1 contains all config- ured VLANs until individual VLANs are explicitly assigned to other Spanning Tree Groups. You can have only one VLAN per Spanning Tree Group except for Spanning Tree Group 1.

1. Configure the following on application switch A:

Add port 8 to VLAN 2 and define Spanning Tree Group 2 for VLAN 2.

>> # /cfg/l2/vlan2

(Select VLAN 2 menu)

>> VLAN

2#

add 8

(Add port 8)

>> VLAN

2#

../stg 2

(Select Spanning Tree Group 2)

>> Spanning Tree Group 2# add 2

(Add VLAN 2)

VLAN 2 is automatically removed from Spanning Tree Group 1.

2. Configure the following on GbE Switch Module B:

Add port 17 to VLAN 2, port 18 to VLAN 3 and define Spanning Tree Group 2 for VLAN 3.

>> # /cfg/l2/vlan2

(Select VLAN 2 menu)

>> VLAN 2#

add 17

(Add port 17)

>> VLAN 2# ../vlan3

(Select VLAN 3 menu)

>> VLAN 3#

add 18

(Add port 18)

>> VLAN 3#

../stg 2

(Select Spanning Tree Group 2)

>> Spanning Tree Group 2# add 3

(Add VLAN 3)

VLAN 3 is removed from Spanning Tree Group 1 and, by default, VLAN 2 remains in Spanning Tree Group 1.

42C4911, January 2007

Chapter 5: Spanning Tree Group „ 113

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Nortel Networks 42C4911 Configuring Multiple Spanning Tree Groups, Configure the following on application switch a, Stg
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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.