BLADEOS 6.5.2 Application Guide

Allocating Bandwidth

Allocated Bandwidth for PGID 0 Through 7

The administrator may allocate a portion of the switch’s available bandwidth to PGIDs 0 through 7. Available bandwidth is defined as the amount of link bandwidth that remains after priorities within PGID 15 are serviced (see “Unlimited Bandwidth for PGID 15” on page 208), and assuming that all PGIDs are fully subscribed. If any PGID does not fully consume its allocated bandwidth, the unused portion is made available to the other priority groups.

Priority group bandwidth allocation can be configured using the following command:

RS G8124(config)# cee global ets bandwidth <priority group number>

<bandwidth allocation>

where bandwidth allocation represents the percentage of link bandwidth, specified as a number between 0 and 100, in 10% increments.

The following bandwidth allocation rules apply:

￿Bandwidth allocation must be 0% for any PGID that has no assigned 802.1p priority values.

￿Any PGID assigned one or more priority values must have a bandwidth allocation greater than 0%.

￿Total bandwidth allocation for groups 0 through 7 must equal exactly 100%. Increasing or reducing the bandwidth allocation of any PGID also requires adjusting the allocation of other PGIDs to compensate.

￿The total bandwidth allocated to all PGIDs which include priority values where PFC is disabled should not exceed 50%.

If these conditions are not met, the switch will report an error when applying the configuration.

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.

Note – Actual bandwidth used by any specific PGID may vary from configured values by up to 10% of the available bandwidth in accordance with 802.1Qaz ETS standard. For example, a setting of 10% may be served anywhere from 0% to 20% of the available bandwidth at any given time.

Unlimited Bandwidth for PGID 15

PGID 15 is permitted unlimited bandwidth and is generally intended for critical traffic (such as switch management). Traffic in this group is given highest priority and is served before the traffic in any other priority group.

208 ￿ Chapter 14: FCoE and CEE

BMD00220, October 2010

Page 207 Page 209
Page 208
Image 208
Blade ICE G8124-E manual Allocated Bandwidth for Pgid 0 Through, Unlimited Bandwidth for Pgid
Page 207 Page 209

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.
Top Page Image Contents