Virtual NICs

CHAPTER 12

A Network Interface Controller (NIC) is a component within a server that allows the server to be connected to a network. The NIC provides the physical point of connection, as well as internal software for encoding and decoding network packets.

Virtualizing the NIC helps to resolve issues caused by limited NIC slot availability. By virtualizing a 10Gbps NIC, its resources can be divided into multiple logical instances known as virtual NICs (vNICs), Each vNIC appear as a regular, independent NIC to the server operating system or a hypervisor, with each vNIC using some portion of the physical NIC’s overall bandwidth.

Figure 17 Virtualizing the NIC for Multiple Virtual Pipes on Each Link

Server

NIC

	VNIC
	VNIC
OS or	VNIC
OS or
Hypervisor VNIC
	VNIC
	VNIC
	VNIC
	VNIC

Physical	Switch
NIC Ports	Ports

10 Gbps Link with

Multiple Virtual Pipes

Switch 1

Switch 2

A G8124 with BLADEOS 6.5 supports the Emulex Virtual Fabric Adapter (VFA) to provide the following vNIC features:

Up to four vNICs are supported on each server port.

vNICs can be grouped together, along with regular server ports, uplink ports, or trunk groups, to define vNIC groups for enforcing communication boundaries.

In the case of a failure on the uplink ports associated with a vNIC group, the switch can signal affected vNICs for failover while permitting other vNICs to continue operation.

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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.