BLADEOS 6.5.2 Application Guide

Queuing and Scheduling

The G8124 can be configured to have either 2 or 8 output Class of Service (COS) queues per port, into which each packet is placed. Each packet’s 802.1p priority determines its COS queue, except when an ACL action sets the COS queue of the packet.

Note – When vNIC operations are enabled, the total number of COS queues available is 4.

You can configure the following attributes for COS queues:

￿Map 802.1p priority value to a COS queue

￿Define the scheduling weight of each COS queue

You can map 802.1p priority value to a COS queue, as follows:

RS G8124(config)# qos transmit-queue mapping <802.1p priority value (0-7)> <COS queue (0-7)>

To set the COS queue scheduling weight, use the following command.

RS G8124(config)# qos transmit-queueweight-cos<COSq number> <COSq weight (0-15)>

To achieve a balanced bandwidth allocation among the various priority groups, packets are scheduled according to a weighted deficit round-robin (WDRR) algorithm. WDRR is aware of packet sizes, which can vary significantly in a CEE environment, making WDRR more suitable than a regular weighted round-robin (WRR) method, which selects groups based only on packet counts. In addition, forwarding precedence is determined by COS queue number, with higher-numberd queues given higher precedence.

Note – For setting traffic ratios, COSq weight values are internally rounded up to 2, 4, 8, or 16.

BMD00220, October 2010

Chapter 9: Quality of Service ￿ 143

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Blade ICE G8124-E manual Queuing and Scheduling
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G8124-E, G8124 specifications

The Blade ICE G8124 is a cutting-edge networking solution designed for high-performance data center environments. It has emerged as a popular choice among organizations that require reliable and efficient network infrastructure to support their growing demands for bandwidth and low-latency connectivity.

One of the key features of the Blade ICE G8124 is its high port density. This networking device typically offers 24 ports of 10 Gigabit Ethernet, ensuring that businesses can connect numerous devices without requiring extensive physical space. The design is also scalable, accommodating future expansion as organizational needs grow.

Another significant aspect of the G8124 is its advanced switching capabilities. It utilizes a non-blocking architecture, enabling simultaneous data transmissions on all ports. This characteristic ensures that there is no bottleneck in the network traffic, providing the high performance needed in data-intensive applications.

The G8124 incorporates various technologies to enhance its functionalities. It supports Layer 2 and Layer 3 switching, making it versatile for different networking needs. Additionally, it features comprehensive Quality of Service (QoS) settings that prioritize critical applications, such as VoIP and video streaming, ensuring smooth operation even under heavy loads.

In terms of security, the Blade ICE G8124 provides robust measures to protect the network. It supports features such as Access Control Lists (ACLs), port security, and VLANs, allowing administrators to segment the network and restrict unauthorized access. These security capabilities are vital in today’s landscape, where cyber threats are increasingly common.

Moreover, the G8124 offers excellent management features. It includes an intuitive user interface for easy configuration and monitoring of network performance. SNMP support allows integration with network management systems, providing administrators with insights needed to optimize their operations.

Power efficiency is also a hallmark of the Blade ICE G8124. It employs energy-saving technologies that reduce operational costs, an essential factor for environmentally-conscious organizations striving to minimize their carbon footprint.

In summary, the Blade ICE G8124 stands out with its high port density, advanced switching capabilities, robust security features, and efficient management options. This networking solution is designed to meet the demands of modern data centers, providing the performance, reliability, and scalability that organizations require. With its innovative technologies, the G8124 ensures that businesses can navigate the complexities of today's networking landscape effectively.
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