Port Mirroring behavior

Alteon OS Application Guide

NOTE – Traffic on VLAN 4095 is not mirrored to the external ports.

This section describes the composition of monitored packets in the GbE Switch Module, based on the configuration of the ports.

If a tagged port's PVID is the same as its VLAN ID, then the egress traffic on that port is untagged. Therefore, the following port-mirroring cases are differentiated, as described below:

Tagged or untagged frames from mirrored ports whose VLAN ID is the same as the moni- toring port's PVID: mirrored frames viewed at the monitoring port are untagged

Tagged or untagged frames from mirrored ports whose VLAN ID is different than the monitoring port's PVID: mirrored frames viewed at the monitoring port are tagged with the VLAN ID of ingress/egress port for ingress/egress mirroring respectively.

Layer 2 Port Mirroring

In this scenario, you observe Layer 2 port mirroring.

Same VLAN as Mirrored Port

Both ports tagged: Tagged packet with VID of the VLAN to which the ports belong

Mirrored port tagged, Monitoring port untagged: Untagged packet

Mirrored port untagged, Monitoring port tagged: Tagged packet with VID of the VLAN to which both ports belong

Both ports untagged: Untagged packet

Different VLAN from Mirrored Port

Both ports tagged: Tagged packet with VID of mirrored port

Mirrored port tagged, Monitoring port untagged: Tagged packet with VID of mirrored port

Mirrored port untagged, Monitoring port tagged: Tagged packet with VID of mirrored port

Both ports untagged: Tagged packet with VID of mirrored port

42C4911, January 2007

Appendix A: Troubleshooting 247

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.

Nortel Networks 42C4911 manual Port Mirroring behavior, Layer 2 Port Mirroring

Models: 42C4911

Alteon OS Application Guide