Avaya P333R-LB manual Selecting a Load Balancing Metric and Persistency Option, Port Re-mapping

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Chapter 14 Load Balancing in the P333R-LB

Client persistency is achieved either by using naturally persistent load balancing schemes (such as Hash or MinMiss Hash), or by forcing persistent load balancing decisions on non-persistent load balancing schemes (such as Round Robin).

Decision forcing is performed by storing the history of the latest decisions in a cache for a limited time, and sending the packets to the appropriate server based on previous load balancing decisions.

Regardless of the client persistency nature of the selected load balancing metric, the P333R-LB offers a unique client persistency feature that is available in all load balancing metrics. Client persistency is based on a "persistency cache". Load balancing decisions are recorded in a persistency cache for a specified time configured by the user. When a new session that matches an entry in the persistency cache is processed by the P333R-LB, it is directed to the same server pointed by the cache (provided, of course, that the server is considered healthy).

The key to the persistency cache is based on the client IP, in combination with a wildcard. This allows persistency to be configured per an exact IP address, or per a group of addresses. For instance, in cases where clients hide behind a NAT device which selects NAT addresses from an address block of 255 addresses, enabling the persistency cache with a wildcard of 0.0.0.255 will map all clients to a single entry and a single Real Server.

Selecting a Load Balancing Metric and Persistency Option

The different load balancing metrics and persistency options provide you with flexibility.

Round Robin generally gives you the best load balancing solution.

Hash, with the key set to Src IP, gives a predictable metric, required when client persistency is needed and a redundant load balancer is used.

MinMiss Hash, with the key set to Src IP, gives the best persistency, without using the persistency cache.

The persistency cache mechanism enables you to specify the required client persistency time.

The wildcard feature allows the client to maintain persistency when the same client is mapped to a different IP address by a NAT device. However, persistency cache size is limited, and it somewhat increases the session processing overhead.

Port Re-mapping

The P333R-LB may be configured to re-map the destination port number when performing load balancing. For example, you might want to run the HTTP process on real servers using a different port number in order to enable more than one concurrent HTTP service.

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Avaya P333R-LB User’s Guide

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Contents Avaya P333R-LB Page Table of Contents Section Installing the P330 Section Configuration of the P330 LAG Bootp Vrrp Avaya User’s Guide Vii Section Troubleshooting and Maintaining the P330 Before you Install the P333R-LB Safety Information FCC NoticeConventions Used in the Documentation CLI ConventionsAvaya P333R-LB User’s Guide Avaya P333R-LB Page Avaya P333R-LB Overview Avaya P330 Family FeaturesIntroduction Avaya P330 Command Line Interface CLI Avaya Multi-Service Network Manager MsnmAvaya P330 Network Management Avaya P330 Device Manager Embedded WebFans, Power Supply and Bups Monitoring SmonAvaya P333R-LB Overview Avaya P333R-LB User’s Guide Avaya P330 Standards Supported Standards and CompatibilityIetf Layer Ietf Network Monitoring Specifications Avaya P333R-LB SwitchSafety Safety AC VersionSafety DC Version Agency ApprovalsStacking Module Expansion ModulesInterfaces Basic MtbfUsage Restriction Laser ClassificationLaser Data Fast Ethernet Fiber Expansion Module Ethernet/Fast Ethernet Expansion ModuleSafety Information Gbic Expansion ModuleSpecifications Avaya Approved Gbic TransceiversX330GT2 Gigabit Ethernet Expansion Module Agency ApprovalATM Expansion Modules Multi-Mode Module LED Warning WAN Expansion ModulesChapter Installing the P330 Page Required Tools InstallationSite Preparation Power Requirements DC Rack Mounting Optional Avaya P330 Rack MountingInstalling the X330STK Stacking Sub-module in the P330 Stacking Switches OptionalConnecting Stacking Sub-modules Incorrect Stack Connection Avaya P330 Stack Connections Installing Expansion Sub-modules Installing the Expansion Sub-module into the Avaya P330Prerequisites Making Connections to Network EquipmentPort Types 1000BASE-SX Chapter Installation Avaya P333R-LB User’s Guide Powering On Avaya P330 Module AC Powering Up the Avaya P330Powering On Avaya P330 Module DC Post-Installation Avaya P333R-LB Front and Back Panels Avaya P333R-LB Front PanelPWR OFF Bups Input Connector Bups Input Connector StickerConnecting a Terminal to the Avaya P330 Serial port Configuring the Terminal Serial Port ParametersEstablishing a Serial Connection P330 Sessions Assigning P330’s IP Stack AddressEstablishing a Telnet Connection For example telnetEstablishing a Modem PPP Connection with the P330 Connecting a Modem to the Console PortOverview CLI Architecture Security LevelsEntering the Supervisor Level Defining new local usersEntering the CLI Exiting the Supervisor LevelIntroduction to Radius User Authentication Illustrates the Radius authentication procedure Radius CommandsUser Authentication Allowed Manager CLI Commands Allowed ManagersUser Authentication Avaya P333R-LB User’s Guide Configuration of the P330 Page Basic Switch Configuration Identifying the system System Parameter ConfigurationOperating parameters Network Time Acquiring Protocols Parameter Configuration UTCBasic Switch Configuration Avaya P333R-LB User’s Guide Configuring the Switch Default Settings of the P330Avaya P330 Default Settings 10/100Base-TX ports 100Base-F ports Base-X ports Chapter Default Settings of the P330 Default Settings of the P330 Avaya P333R-LB User’s Guide Overview Avaya P330 Layer 2 FeaturesEthernet Configuring Ethernet Parameters Priority Flow ControlMAC Address Ethernet Configuration CLI Commands CAM TableEthernet Implementation in the Avaya P333R-LB Vlan Configuration Vlan OverviewVlan Tagging Multi Vlan BindingVlan CLI Commands Ingress Vlan SecurityVlan CLI Commands Vlan Implementation in the Avaya P333R-LB How Port Based Authentication Works Port Based Network Access Control PbnacPbnac Implementation in the P330 Family Configuring the P330 for Pbnac Pbnac CLI CommandsChapter Avaya P330 Layer 2 Features Avaya P330 Layer 2 Features Spanning Tree Protocol Spanning Tree ProtocolSpanning Tree per Port About the 802.1w Standard Rapid Spanning Tree Protocol RstpPort Roles Spanning Tree Implementation in the P330 Family Spanning Tree Protocol CLI Commands Spanning Tree Protocol CLI CommandssChapter Avaya P330 Layer 2 Features MAC Security MAC Security CLI CommandsMAC Security Implementation in P330 Avaya P330 Layer 2 Features LAG CLI Commands LAG OverviewLAG Implementation in the Avaya P330 Family of Products Port Redundancy Port Redundancy OperationPort Redundancy CLI Commands Intermodule Port RedundancyAvaya P330 Layer 2 Features IP Multicast Filtering IP Multicast CLI Commands IP Multicast Implementation in the Avaya P333R-LBStack Health Stack Health CLI CommandsImplementation of Stack Health in the P330 Family Port Classification CLI Commands Port ClassificationStack Redundancy Avaya P330 Layer 2 Features Avaya P333R-LB User’s Guide Avaya P330 Layer 3 Features What is Routing?Routing Forwarding Routing ConfigurationMultinetting Multiple Subnets per Vlan IP Configuration IP Configuration CLI CommandsAssigning Initial Router Parameters Routerconfigure# interface interface-name RIP Routing Interchange Protocol Configuration RIP OverviewRIP CLI Commands RIP2Avaya P330 Layer 3 Features Ospf Open Shortest Path First Configuration Ospf OverviewOspf CLI Commands Static Routing Configuration CLI Commands Static Routing ConfigurationStatic Routing Overview Route Preferences RIPRoute Redistribution Commands Route RedistributionARP Address Resolution Protocol Table Configuration ARP OverviewARP CLI Commands ARP TableBOOTP/DHCP Overview DHCP/BOOTP RelayBOOTP/DHCP CLI Commands NetBIOS Overview NetBIOS Re-broadcast ConfigurationNetBIOS Re-broadcast Configuration CLI Commands Policy Configuration Policy Configuration OverviewDefault List Behavior Policy Configuration CLI CommandsEnforcement Policy and Load Balancing110 Avaya P333R-LB User’s Guide Policy Configuration Example Avaya P330 PolicyIP Fragmentation and Reassembly Overview IP Fragmentation and ReassemblyIP Fragmentation/Reassembly CLI Commands Layer 3 Configuration File Avaya P330 Layer 3 Features 114 Avaya P333R-LB User’s Guide Layer 3 Redundancy VrrpVrrp Commands Vrrp CommandsAvaya P333R-LB User’s Guide 117 Configuration Example WANChapter Layer 3 Redundancy 120 Avaya P333R-LB User’s Guide Srrp Commands SrrpRSG Backup Configuration Example Real Server Group BackupAdditional Redundancy Schemes Avaya P333R-LB User’s Guide 123 124 Avaya P333R-LB User’s Guide Real Server Backup Real Server Backup Configuration Example126 Avaya P333R-LB User’s Guide Avaya P333R-LB User’s Guide 127 Layer 3 Redundancy 128 Avaya P333R-LB User’s Guide Load Balancing in the P333R-LB Firewall Load BalancingBenefits How It WorksTransparent Routing Firewall Load Balancing ImplementationConfiguring Firewall Load Balancing in the P333R-LB LANLoad Balancing in the P333R-LB Load Balancing in the P333R-LB Load Balancing in the P333R-LB Load Balancing in the P333R-LB Load Balancing in the P333R-LB Demilitarized Zone DMZ Configuration Example FirewallLoad Balancing in the P333R-LB Chapter Load Balancing in the P333R-LB Load Balancing in the P333R-LB Load Balancing Metrics for Transparent Routing Fwlb HashHash Metric Loss of Persistency MinMiss HashSelecting a Load Balancing Metric Weighted FirewallsHealth Check Non-Transparent Routing Firewall Load Balancing PersistencyImplementation NAT Configuration Example InternetStatic NAT Configuration Example Non-Transparent Routing Fwlb Sample Static NAT Configuration Load Balancing Metrics for Non-Transparent Routing FwlbBridging Firewall Load Balancing Configuration Example Following figure illustrates Bridging FwlbLoad Balancing in the P333R-LB Load Balancing in the P333R-LB Load Balancing Metrics for Bridging Fwlb Firewall Load Balancing Management Security Benefits Server Load BalancingHalf NAT Load Balancing Load Balancing in the P333R-LB Configuring Server Load Balancing in the P333R-LB Half NAT Based ConfigurationP333R-LB-1config-if2#ip address 10.1.1.10 255.255.255.0 Done 10.1.1.3 Full NAT Load BalancingLoad Balancing in the P333R-LB Full NAT Based Configuration 255.255.255.0Done P333R-LB-1super-ifclient#exit Low Direct Server Return DSR Triangulation RedirectionDSR Triangulation Configuration Example 10 illustrates an SLB Triangulation configurationLoad Balancing in the P333R-LB Combining Two Cache Applications on the Same Real Caches DNS ConfigurationLoad Balancing Metrics Round Robin 12 Hash Metric Loss of Persistency Weighted Real Servers Health CheckClient Persistency Selecting a Load Balancing Metric and Persistency Option Port Re-mappingLoad Balancing in the P333R-LB Application Redirection Load Balancing in the P333R-LB Configuration Examples Application RedirectionP333R-LB-1configure#ip default-gateway Load Balancing in the P333R-LB Combining Two Cache Applications on the Same Real Caches 15 Two Cache Applications on the Same Real CachesLoad Balancing in the P333R-LB Load Balancing in the P333R-LB Load Balancing Metrics 16 Hash Metric Loss of Persistency Weighted Real Servers Load Balancing in the P333R-LB Client Persistency Policy-Based Routing Source-Based Routing Load Balancing in the P333R-LB Avaya P333R-LB User’s Guide Embedded Web Manager System RequirementsRunning the Embedded Web Manager Embedded Web Manager/Browser CompatabilityWelcome Web-based Manager Install from the Avaya Site Installing the Java Plug-inInstall from your Local Web Site Embedded Web Manager P330 Page Troubleshooting the Installation Troubleshooting the InstallationTroubleshooting the Installation Maintenance Adding/Replacing an Expansion Sub-moduleAdding an Expansion Sub-module to Avaya P330 Replacing an Existing Expansion Sub-moduleWithout Saving Configuration Definitions Saving Configuration DefinitionsReplacing the Stacking Sub-module Software Download Updating the SoftwareObtain Software Online Downloading Software Download New Version without Overwriting Existing Version How to Contact Us United StatesAP Asia Pacific Region Cala Caribbean and Latin America Region Avaya P333R-LB User’s Guide
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P333R-LB specifications

The Avaya P333R-LB is a robust and versatile switch that is part of Avaya's portfolio aimed at enterprise networking solutions. This switch is designed to enhance the performance and scalability of network infrastructure while ensuring high availability and reliability.

One of the main features of the P333R-LB is its Layer 3 switching capability, which allows for efficient routing within an organization's network. This capability is particularly beneficial for organizations with multiple VLANs, as it simplifies the routing process and ensures that data packets are transmitted in the most efficient manner possible.

The P333R-LB is equipped with advanced Quality of Service (QoS) features to prioritize traffic based on the type of application being used. This ensures that critical applications, such as VoIP and video conferencing, receive the necessary bandwidth and low latency required for optimal performance. Additionally, it supports both IPv4 and IPv6 protocols, making it adaptable to a variety of networking environments.

Another important feature of the Avaya P333R-LB is its stackable design. This allows multiple switches to be interconnected, creating a single logical unit. This stacking capability not only simplifies management but also increases overall network capacity and redundancy. In case of a hardware failure, the stack can continue operating without interruption, maintaining network integrity and service continuity.

The switch also integrates advanced security features, including support for MAC filtering, access control lists, and port security. These features help to safeguard network resources from unauthorized access and potential threats. Moreover, the P333R-LB supports 802.1X port-based authentication, which adds an additional layer of security during user access to the network.

The Avaya P333R-LB comes with multiple Gigabit Ethernet ports, allowing for high-speed connectivity to devices such as servers, workstations, and IP phones. This ensures that all devices on the network can communicate effectively, supporting the demands of modern enterprise environments.

For management and monitoring, the P333R-LB offers a user-friendly web interface along with SNMP support, enabling network administrators to easily configure settings and monitor network performance. This simplicity in management is crucial for IT teams that need to ensure optimal network performance while minimizing downtime.

In summary, the Avaya P333R-LB is a feature-rich, scalable, and reliable switch that meets the needs of demanding enterprise networks. With its advanced technologies, QoS support, stackable design, robust security features, and high-speed connectivity options, the P333R-LB is positioned to support a wide range of applications and enhance overall network performance.
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