NAD 3020 manual Port-ChannelConfiguration, VLAN Configuration, RPVST+ Configuration

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VLAN Configuration

Design Guide

VLAN Configuration

To configure the VLANs on the switches, complete the following tasks:

Set the VTP administrative domain name and mode and create the server-farm VLANs as follows:

(config)# vtp domain <domain name> (config)# vtp mode transparent (config)# vlan 60 (config-vlan)# name bladeservers (config-vlan)# state active

RPVST+ Configuration

Configure Spanning Tree Protocol to manage the physical loops in the topology. Cisco recommended using RPVST+ for its fast-convergence characteristics. Set the Spanning Tree Protocol mode on each aggregation switch as follows:

(config)# spanning-tree mode rapid-pvst

Configure the path cost to use 32 bits in the Spanning Tree Protocol calculations:

(config)# spanning-tree pathcost method long

Configure the primary and secondary root switches as follows:

(config)# spanning-tree vlan <vlan range> root primary secondary

Inter-Switch Link Configuration

The topologies discussed in this guide require connectivity between the switches. The following three types of interswitch connections exist:

●Aggregate 1 to aggregate 2

●Aggregate 1 or aggregate 2 to HP c-Class BladeSystem switch A or switch B

●HP BladeSystem switch A to switch B

Each of these connections is a Layer 2 Cisco EtherChannel connection consisting of multiple physical interfaces bound together as a channel group or port channel. These point-to-point links between the switches should carry more than one VLAN; therefore, each is a trunk.

Port-Channel Configuration

Link Aggregate Control Protocol (LACP) is the IEEE standard for creating and managing Cisco EtherChannel connections between switches. Each aggregate switch uses this feature to create a port channel across the line cards. The use of multiple line cards within a single switch reduces the possibility of the point-to-point port channel becoming a single point of failure in the network.

Configure the active LACP members on aggregate 1 to Cisco Catalyst Blade Switch 3020 switch A as follows:

(config)# interface GigabitEthernet12/1

(config-if)# description <<** Connected to Switch-A **>> (config-if)# channel-protocol lacp

(config-if)# channel-group 1 mode active (config)# interface GigabitEthernet11/1

(config-if)# description <<** Connected to Switch-A **>> (config-if)# channel-protocol lacp

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

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Contents Switch 3020 for the HP c-Class Integrating the Cisco Catalyst BladeBladeSystem into the Cisco Data Center Network ArchitectureContents Introduction HP c-ClassBladeSystem Enclosure OverviewDesign Guide Design Guide Cisco Catalyst Blade Switch 3020 for HP Page 5 ofCisco Catalyst Blade Switch 3020 Features Spanning TreeDesign Guide Traffic Monitoring Link Aggregation Protocols Design Guide Figure 5. RSPAN ExampleData Center Network Architecture Data Center Network ComponentsAccess Layer Aggregation LayerHigh Availability Design GoalsHigh Availability Design GuideHigh Availability for the Blade Servers Scalability Physical Port CountSlot Count Design GuideManagement Out-of-BandManagementIn-BandManagement Serial Console PortDesign Guide Design and Implementation Details Network Management RecommendationsRecommended Topology Primary root switch failure and recovery Configuring the Aggregate Switches Configuring the Cisco Catalyst Blade Switch 3020sAdditional Aggregation-SwitchConfiguration Alternative Topology Configuration Details Configuring the Aggregate SwitchesConfiguring the Cisco Catalyst Blade Switch 3020s Port-ChannelConfiguration VLAN ConfigurationRPVST+ Configuration Inter-SwitchLink ConfigurationTrunking Configuration Server-PortConfiguration Server Default Gateway Configuration RSPAN Configuration Page 28 of
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