Extreme Networks Px Series manual Configuring Redundancy for the PxM, Using Esrp with the PxM

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Configuring Redundancy for the PxM

You must use the the Extreme Standby Router Protocol (ESRP) to configure redundancy for the PxM. See “Using ESRP with the PxM” below.

If you have multiple VLANs for the PxM, you must designate one VLAN as a master, and make all other VLANs domain members of the master VLAN. You can then configure ESRP for the master VLAN. See “Configuring the PxM for Multiple VLANs” on page 8-7.

Using ESRP with the PxM

The Extreme Standby Router Protocol (ESRP) is described in the ExtremeWare Software User Guide. The PxM does not run ESRP directly, but participates in the ESRP diagnostic tracking, as long as only one VLAN is configured, or all VLANs are domain members of a single master VLAN. See “Configuring the PxM for Multiple VLANs” on page 8-7.

When ESRP is enabled on the BlackDiamond, one of the factors in the selection of an ESRP master is the presence or absence of the heartbeat signal from the PxM to the MSM. If there is an FPGA fatal error, or if the PHY link fails, the PxM stops sending the heartbeat signal, and the ESRP reassigns its priority level.

For example, suppose the two BlackDiamond systems, A and B, each have PxM. You enable ESRP with a single VLAN, and set the priority to 1 for both switches:

enable esrp vlan “myVLAN”

config vlan “myVLAN” esrp priority 1

To enable diagnostic tracking on both switches, use the following command:

config vlan “myVLAN” add track-diagnostic failover 0

If the PxM is configured with multiple VLANs, you must make them all domain members of a master VLAN, then enable ESRP for the master VLAN. See “Configuring the PxM for Multiple VLANs” on page 8-7.

When a switch’s heartbeat signal fails, the failover argument (0) becomes the new priority value for that switch.

When both switches are working and have the same priority, the ESRP selects one (say

A)to be the master, based on other factors. When A fails, its heartbeat signal stops. Diagnostic tracking detects this, and changes the ESRP priority of switch A to 0.

8-6	Px Series Application Switch Installation and Configuration Guide

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Contents Published April Part number 100101-00 Rev Page Contents Installing the PxM Application Switch Module Configuring Servers and Services Index Index of Commands Preface IntroductionConventions Text ConventionsIcon Alerts you to Convention DescriptionRelated Publications Preface Server Load Balancing Concepts Purpose of Server Load BalancingTerms 1Conceptual view of server load balancingLoad Balancing Modes Layer 4 Load BalancingLayer 7 Load Balancing and Content Analysis 2Single client-server transaction using layer3Establishing a layer 7 request Getting Started on Load Balancing Configuration Port RewriteGetting Started on Load Balancing Configuration Page Installing the SummitPx1 Application Switch Overview of the SummitPx1 Application SwitchSummitPx1 Front View 1Px series application switch LEDs Color IndicatesSummitPx1 Application Switch Rear View Signal Description2DB-9 Adapter Pinouts To DB-9Installing the SummitPx1 Application Switch Determining the LocationRack Mounting Powering On the SummitPx1 Free-StandingSetting Up Console Communication Configuring Switch IP Parameters Configuring the 10/100 Ethernet Management Port Installing the PxM Application Switch Module Installing I/O ModulesRemoving I/O Modules Removing I/O Modules Page Managing the Switch Using the Command-Line Interface Abbreviated Syntax and Command CompletionSyntax Symbols 1Command Syntax SymbolsSymbol Description Line-Editing KeysSpecifying Text Values 2Line-Editing KeysConfiguring Management Access Command HistoryPrompt Text Changing the Default Passwords Creating Accounts Modifying AccountsCommand Description Managing the PxMConfiguring VLANs Configuring Snmp 4SNMP Configuration SettingsSetting Description System ContactConfiguring DNS Client Services SettingDescriptionUsing Secure Shell 2 SSH2 5DNS Client Configuration CommandsEnabling SSH2 for Inbound Switch Access Config ssh2 keyUsing SCP2 from an External SSH2 Client SSH2 Client Functions on the Switch Utilities Showing CPU LoadChecking Basic Connectivity Logging Configuring a Startup Banner Message Starting the GlobalPx Content Director AgentExample Configuration Internet DNS serverFollowing commands configure all system-related facilities Page Configuring Servers and Services Configuring Real ServersConfiguring Server Groups Configuring Virtual Services Layer 7 Virtual Services Layer 4 Port-based Load BalancingConfiguring Traffic Tagging Configuration Example 1Tag SpecificationsTag Specification Description Tag Range Configuration Example Page Choosing Policies, Persistence Modes, and NAT Scheduling PoliciesPersistence Modes 1Scheduling PoliciesSpecifier Policy Description Client IP Persistence Mode UDP Flow Persistence1Client IP persistence mode Configuring Client IP Stickiness Cookie Persistence Modes2Self-identifying cookie persistence mode Persistence Modes Hashed Cookie Persistence Session Learned Cookie Persistence Mode 4Learned cookie persistence mode Configuring Cookie Stickiness SSL Session Identifier Persistence Full-NAT Mode NAT ModesServer-only Half-NAT Mode Configuring Full-NAT Mode and Proxy IP AddressesConfiguring Half-NAT Mode Config source-flow name next-hop gateway-mode ip Real Syslog server SummitPx1 Configuration Example Page URL Switching Domain and URL SwitchingDomain Switching 1Typical switching scenario2Domain switching example Configuring URL Switching URL Switching3Simple URL switching example 4More Complicated URL switching example 5Hierarchical approach to pattern rules Creating Domain and URL Switching Rules 1Wildcard CombinationsWildcard Example Definition Modifying Existing URL Rules and Domains Application Servers Management net Configuration Example Page Configuring Redundancy Using Vrrp with the SummitPx1Adding and Configuring VRRPs Give backup systems lower prioritiesUsing Vrrp in Existing Redundant Networks 1Application switch using multiple VLANs Vrrp Automatic SynchronizationFollowing commands can be passed from master to backup Configuring Redundancy for the PxM Using Esrp with the PxMConfiguring the PxM for Multiple VLANs For SW2Configuring a Default Gateway Health Checks OverviewServer Startup Pacing Health Checking Procedure Configuring Health Checks Timers and CountersTypes of Health Checks You can disable health checks for a server group Page Monitoring the Switch 1Statistics Display CommandsShowing Traffic Statistics Displays packet-level counters for Showing Configuration Details 2Configuration Display CommandsConfiguration Displays Status Displays SummitPx128 # show server detailsShow health Information Column DescriptionManaging and Troubleshooting Operation 5Management and Troubleshooting CommandsCommandDescription Index EsrpHttp GET AUX Page Index of Commands