Cisco Catalyst Blade Switch 3020 for HP

Design Guide

Cisco Catalyst Blade Switch 3020 for HP

This section briefly describes the Cisco Catalyst Blade Switch 3020 for HP and explains how the blade servers within the HP c-Class BladeSystem are physically connected to the switching modules.

The Cisco Catalyst Blade Switch 3020 provides enhanced Layer 2 services (known as Layer 2+ or Intelligent Ethernet switching) to the HP c-Class BladeSystem. The Cisco Catalyst Blade Switch 3020 enhances basic Layer 2 switching by including Cisco proprietary protocols, access control lists (ACLs), and quality of service (QoS) based on Layer 3 information. With Simple Network Management Protocol (SNMP), command-line interface (CLI), or HTTP management options available and a robust set of Cisco IOS® Software switching features, the Cisco Catalyst Blade Switch 3020 naturally integrates into the data center environment. The following features highlight this capacity:

●Loop protection and rapid convergence with support for Per VLAN Spanning Tree Plus (PVST+), IEEE 802.1w, IEEE 802.1s, Bridge Protocol Data Unit (BDPU) Guard, Loop Guard, PortFast, UplinkFast, and Unidirectional Link Detection (UDLD)

●Advanced management protocols, including Cisco Discovery Protocol, VLAN Trunking Protocol (VTP), and Dynamic Trunking Protocol (DTP)

●Port Aggregation Protocol (PAgP) and Link Aggregation Control Protocol (LACP) for link load balancing and high availability

●Support for authentication services, including RADIUS and TACACS+ client support

●Support for protection mechanisms, such as limiting the number of MAC addresses allowed or shutting down the port in response to security violations

Each Ethernet switch provides eight external Ethernet ports for connecting the blade enclosure to the external network. Four Small Form-Factor Pluggable (SFP) ports provide 1000BASE-SX interfaces and are shared with four of the copper Gigabit Ethernet links. Two additional copper Gigabit Ethernet ports are shared with two internal crossover interfaces connecting the pair of switches (labeled X-Crossovers in Figures 2 and 3). All of these ports can be grouped to support the IEEE 802.3ad LACP. Each blade server is connected to the backplane using the available Gigabit Ethernet network interface cards (NICs). The number of NICs on each blade server varies. Each server, whether it is full- or half-height, supports an additional Ethernet interface providing Integrated Lights Out (iLO) support.

Note: The iLO interface supports a management interface that resides on each server blade. For more information about the iLO system, refer to the “Management” section of this guide.

© 2008 Cisco Systems, Inc. All rights reserved. This document is Cisco Public Information.

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3020 specifications

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Throughout its decades-long legacy, the NAD 3020 has influenced countless audio products and remains a benchmark for entry-level amplification. Its combination of power, clarity, and affordability makes it a beloved choice for both new listeners and seasoned audiophiles seeking a dependable amplifier that doesn't compromise on sound quality. The NAD 3020 exemplifies how great engineering can lead to remarkable audio experiences, solidifying its place in the history of hi-fi audio.
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