Blade ICE G8124-E manual Effects on Flow Control

Models: G8124-E G8124

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BLADEOS 6.5.2 Application Guide

If the prior, non-CEE configuration used 802.1p priority values for different purposes, or does not expect bandwidth allocation as shown in Table 17 on page 193, when CEE is turned on, the administrator should reconfigure ETS settings as appropriate.

Each time CEE is turned on or off, the appropriate ETS or 802.1p QoS default settings shown in Table 16 on page 193 are restored, and any manual settings made to prior ETS or 802.1p QoS configurations are cleared.

It is recommended that a configuration backup be made prior to turning CEE on or off. Viewing the configuration file will allow the administrator to manually re-create the equivalent configuration under the new CEE mode, and will also allow for the recovery of the prior configuration if necessary.

Effects on Flow Control

When CEE is off (the default), 802.3x standard flow control is enabled on all switch ports by default.

When CEE is turned on, standard flow control is disabled on all ports, and in its place, PFC (see “Priority-Based Flow Control” on page 200) is enabled on all ports for 802.1p priority value 3. This default is chosen because priority value 3 is commonly used to identify FCoE traffic in a CEE environment and must be guaranteed lossless behavior. PFC is disabled for all other priority values.

Each time CEE is turned off, the prior 802.3x standard flow control settings will be restored (including any previous changes from the defaults). However, each time CEE is turned on, the default PFC settings are restored and any prior manual PFC configuration is cleared.

It is recommend that a configuration backup be made prior to turning CEE on or off. Viewing the configuration file will allow the administrator to manually re-create the equivalent configuration under the new CEE mode, and will also allow for the recovery of the prior configuration if necessary.

When CEE is on, PFC can be enabled only on priority value 3 and one other priority. If flow control is required on additional priorities on any given port, consider using standard flow control on that port, so that regardless of which priority traffic becomes congested, a flow control frame is generated.

194 ￿ Chapter 14: FCoE and CEE

BMD00220, October 2010

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Blade ICE G8124-E manual Effects on Flow Control

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.