Chapter 11: QoS Configuration Guide

Configure Layer-2 QoS

QoS policies applied to layer-2 flows allow you to assign priorities based on source and destination MAC addresses. A QoS policy set for a layer-2 flow allows you to classify the priority of traffic from:

•A specific source MAC address to a specific destination MAC address (use only when the port is in flow bridging mode)

•Any source MAC address to a specific destination MAC address

Before applying a QoS policy to a layer-2 flow, you must first determine whether a port is in address-bridging mode or flow-bridging mode. If a port operates in address-bridging mode (default) then you can specify the priority based on the destination MAC address and a VLAN ID. You can also specify a list of ports to apply the policy.

If a port operates in flow-bridging mode, the user can be more specific and configure priorities for frames that match both a source AND a destination MAC address and a VLAN ID. You can also specify a list of ports to apply the policy.

Note: In flow mode, you can also ignore the source MAC address and configure the priority based on the destination MAC address only.

When applying QoS to a layer-2 flow, priority can be assigned as follows:

•The frame gets assigned a priority within the switch. Select “low, medium, high or control”.

•The frame gets assigned a priority within the switch, AND if the exit ports are trunk ports, the frame is assigned an 802.1Q priority. Select a number from 0 to 7. The mapping of 802.1Q to internal priorities is the following: (0 = low) (1,2,3 =medium) (4,5,6 = high) (7 = control)

To set a QoS policy on a layer-2 flow, enter the following command in Configure mode:

Set a Layer-2 QoS policy.

qos set l2 name <name> source-mac <MACaddr> dest-mac <MACaddr> vlan <vlanID> in-port-list <port-list>priority controlhighmediumlow<trunk-priority>

Configuring Layer-3 & Layer-4 QoS

QoS policies applied at layer-3 and 4 allow you to assign priorities based on specific fields in the IP and IPX headers. You can set QoS policies for IP flows based on source IP address, destination IP address, source TCP/UDP port, destination TCP/UDP port, type of service (TOS) and transport protocol (TCP or UCP). You can set QoS policies for IPX flows based on source network, source node, destination network, destination node, source port and destination port. A QoS policy set on an IP or IPX flow allows you to classify the priority of traffic based on:

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Cabletron Systems 9032578-02 manual Configure Layer-2 QoS, Configuring Layer-3 & Layer-4 QoS
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9032578-02 specifications

Cabletron Systems 9032578-02 is a notable component in the realm of networking equipment, especially recognized for its robust performance and reliability. As part of Cabletron’s commitment to delivering high-quality networking solutions, this device has become integral for many organizations seeking efficient data management.

One of the standout features of the 9032578-02 is its advanced switching capabilities. With the ability to manage multiple data streams seamlessly, it ensures that data packets are routed efficiently, minimizing latency and maximizing throughput. This is particularly crucial in environments where high-volume data transfer is the norm, such as in data centers or enterprises with extensive digital infrastructures.

The device is equipped with various connectivity options that enhance its versatility. These include support for multiple types of network interfaces, allowing for easy integration into existing systems. Whether it's Ethernet connections or fiber optics, the 9032578-02 accommodates diverse network requirements, making it suitable for various applications across different industries.

In terms of technology, the Cabletron Systems 9032578-02 employs cutting-edge networking protocols that ensure secure and reliable communication. This includes support for both IPv4 and IPv6 protocols, which future-proofs the device as organizations transition to newer standards. The incorporation of Quality of Service (QoS) features further enhances its capability to prioritize critical network traffic, ensuring that bandwidth-intensive applications receive the necessary resources for optimal performance.

Another critical characteristic of the 9032578-02 is its scalability. Organizations can expand their network infrastructure without the need for complete system overhauls. This modularity allows businesses to grow and adapt to changing demands while maintaining investment in their existing technology.

Additionally, Cabletron integrates advanced monitoring and management tools within the 9032578-02. Network administrators can easily track performance metrics, analyze traffic patterns, and troubleshoot issues in real-time. This level of visibility is essential for maintaining a stable network environment, particularly in dynamic organizational settings.

In summary, Cabletron Systems 9032578-02 is synonymous with high performance, scalability, and advanced technology. Its comprehensive features make it an excellent choice for organizations requiring reliable networking solutions that can adapt to evolving demands and ensure efficient data communication across their systems.
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