Extreme Networks Px Series manual Using Vrrp in Existing Redundant Networks

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Using VRRP with the SummitPx1

config vrrp add vrid <number>

config vrrp vrid <number> priority 100

enable vrrp

build

To set VRRP to preempt whenever it has a higher priority than the active system, or to prevent it from preempting, use this command:

config vrrp vrid <number> preemptdont-preempt

You can also set the frequency of advertisement intervals, using this command:

config vrrp vrid <number> advertisement-interval <number of seconds>

Using VRRP in Existing Redundant Networks

The VRRP implementation for the Px series application switch is designed to interoperate with any existing layer 2 and layer 3 redundancy protocols. Therefore, it works in environments where Spanning Tree is being used for layer 2 redundancy, or where VRRP or HSRP is being used for the layer 3 redundancy without problems.

Because the ESRP protocol in ExtremeWare is a custom layer 2 and 3 hybrid redundancy protocol, a few extra configuration details must be configured in the connected switches.

By default, the ESRP switch that is in standby does not forward traffic at layer 2 or layer 3 on “host” ports that are not tagged for 802.1q. Because the active application switch could be connected to a standby ESRP switch, you must put the port that attaches to it in the ESRP host-attach mode. In this mode, the port will continue to forward layer 2 traffic, ensuring that the Px series application switch can do its job. To configure host-attach mode, use the following command:

config esrp port-mode host ports <port list>

Figure 8-1 shows an example of active and standby systems with multiple VLANs, where ESRP is configured on the attached BlackDiamond switch.

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 Introduction PrefaceText Conventions ConventionsIcon Alerts you to Convention DescriptionRelated Publications Preface Purpose of Server Load Balancing Server Load Balancing Concepts1Conceptual view of server load balancing TermsLayer 4 Load Balancing Load Balancing Modes2Single client-server transaction using layer Layer 7 Load Balancing and Content Analysis3Establishing a layer 7 request Port Rewrite Getting Started on Load Balancing ConfigurationGetting Started on Load Balancing Configuration Page Installing the SummitPx1 Application Switch Overview of the SummitPx1 Application SwitchSummitPx1 Front View Color Indicates 1Px series application switch LEDsSignal Description SummitPx1 Application Switch Rear View2DB-9 Adapter Pinouts To DB-9Installing the SummitPx1 Application Switch Determining the LocationRack Mounting Free-Standing Powering On the SummitPx1Setting Up Console Communication Configuring Switch IP Parameters Configuring the 10/100 Ethernet Management Port Installing I/O Modules Installing the PxM Application Switch ModuleRemoving I/O Modules Removing I/O Modules Page Managing the Switch Abbreviated Syntax and Command Completion Using the Command-Line InterfaceSyntax Symbols 1Command Syntax SymbolsLine-Editing Keys Symbol DescriptionSpecifying Text Values 2Line-Editing KeysConfiguring Management Access Command HistoryPrompt Text Changing the Default Passwords Modifying Accounts Creating AccountsManaging the PxM Command DescriptionConfiguring VLANs 4SNMP Configuration Settings Configuring SnmpSetting Description System ContactSettingDescription Configuring DNS Client Services5DNS Client Configuration Commands Using Secure Shell 2 SSH2Config ssh2 key Enabling SSH2 for Inbound Switch AccessUsing SCP2 from an External SSH2 Client SSH2 Client Functions on the Switch Utilities Showing CPU LoadChecking Basic Connectivity Logging Starting the GlobalPx Content Director Agent Configuring a Startup Banner MessageInternet DNS server Example ConfigurationFollowing commands configure all system-related facilities Page Configuring Real Servers Configuring Servers and ServicesConfiguring Server Groups Configuring Virtual Services Layer 4 Port-based Load Balancing Layer 7 Virtual ServicesConfiguring Traffic Tagging Configuration Example 1Tag SpecificationsTag Specification Description Tag Range Configuration Example Page Scheduling Policies Choosing Policies, Persistence Modes, and NATPersistence Modes 1Scheduling PoliciesSpecifier Policy Description UDP Flow Persistence Client IP Persistence Mode1Client IP persistence mode Cookie Persistence Modes Configuring Client IP Stickiness2Self-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 NAT Modes Full-NAT ModeConfiguring Full-NAT Mode and Proxy IP Addresses Server-only Half-NAT ModeConfiguring Half-NAT Mode Config source-flow name next-hop gateway-mode ip Real Syslog server SummitPx1 Configuration Example Page Domain and URL Switching URL Switching1Typical switching scenario Domain Switching2Domain switching example URL Switching Configuring 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 Using Vrrp with the SummitPx1 Configuring RedundancyGive backup systems lower priorities Adding and Configuring VRRPsUsing Vrrp in Existing Redundant Networks Vrrp Automatic Synchronization 1Application switch using multiple VLANsFollowing commands can be passed from master to backup Using Esrp with the PxM Configuring Redundancy for the PxMFor SW2 Configuring the PxM for Multiple VLANsConfiguring a Default Gateway Overview Health ChecksServer 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 2Configuration Display Commands Showing Configuration DetailsConfiguration Displays SummitPx128 # show server details Status DisplaysColumn Description Show health Information5Management and Troubleshooting Commands Managing and Troubleshooting OperationCommandDescription Esrp IndexHttp GET AUX Page Index of Commands