Avaya P333R-LB manual Rapid Spanning Tree Protocol Rstp, About the 802.1w Standard, Port Roles

Page 86

Chapter 11 Avaya P330 Layer 2 Features

Rapid Spanning Tree Protocol (RSTP)

About the 802.1w Standard

The enhanced feature set of the 802.1w standard includes:

•Bridge Protocol Data Unit (BPDU) type 2

•New port roles: Alternate port, Backup port

•Direct handshaking between adjacent bridges regarding a desired topology change (TC). This eliminates the need to wait for the timer to expire.

•Improvement in the time it takes to propagate TC information. Specifically, TC information does not have to be propagated all the way back to the Root Bridge (and back) to be changed.

•Origination of BPDUs on a port-by-port basis.

Port Roles

At the center of RSTP—specifically as an improvement over STP (802.1d)—are the roles that are assigned to the ports. There are four port roles:

•Root port — port closest to the root bridge

•Designated port — corresponding port on the remote bridge of the local root port

•Alternate port — an alternate route to the root

•Backup port — an alternate route to the network segment

The RSTP algorithm makes it possible to change port roles rapidly through its fast topology change propagation mechanism. For example, a port in the “blocking” state can be assigned the role of “alternate port.” When the backbone of the network fails the port may be rapidly changed to forwarding.

Whereas the STA passively waited for the network to converge before turning a port into the forwarding state, RSTP actively confirms that a port can safely transition to forwarding without relying on any specific, programmed timer configuration.

RSTP provides a means of fast network convergence after a topology change. It does this by assigning different treatments to different port types. The port types and the treatment they receive follow:

•Edge ports — Setting a port to "edge-port" admin state indicates that this port is connected directly to end stations that cannot create bridging loops in the network. These ports transition quickly to forwarding state. However, if BPDUs are received on an Edge port, it’s operational state will be changed to "non- edge-port" and bridging loops will be avoided by the RSTP algorithm. The default admin state of all ports is "edge-port".

72

Avaya P333R-LB User’s Guide

Page 85 Page 87
Image 86
Page 85 Page 87
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 Conventions Used in the Documentation Before you Install the P333R-LBSafety Information FCC Notice CLI ConventionsAvaya P333R-LB User’s Guide Avaya P333R-LB Page Introduction Avaya P330 Family FeaturesAvaya P333R-LB Overview Avaya P330 Network Management Avaya P330 Command Line Interface CLIAvaya Multi-Service Network Manager Msnm Avaya P330 Device Manager Embedded WebFans, Power Supply and Bups Monitoring SmonAvaya P333R-LB Overview Avaya P333R-LB User’s Guide Ietf Layer Standards and CompatibilityAvaya P330 Standards Supported Ietf Network Monitoring Specifications Avaya P333R-LB SwitchSafety DC Version SafetySafety AC Version Agency ApprovalsInterfaces Stacking ModuleExpansion Modules Basic MtbfLaser Data Laser ClassificationUsage Restriction Fast Ethernet Fiber Expansion Module Ethernet/Fast Ethernet Expansion ModuleSafety Information Gbic Expansion ModuleSpecifications Avaya Approved Gbic TransceiversATM Expansion Modules Agency ApprovalX330GT2 Gigabit Ethernet Expansion Module Multi-Mode Module LED Warning WAN Expansion ModulesChapter Installing the P330 Page Site Preparation InstallationRequired Tools Power Requirements DC Rack Mounting Optional Avaya P330 Rack MountingConnecting Stacking Sub-modules Stacking Switches OptionalInstalling the X330STK Stacking Sub-module in the P330 Incorrect Stack Connection Avaya P330 Stack Connections Installing Expansion Sub-modules Installing the Expansion Sub-module into the Avaya P330Port Types Making Connections to Network EquipmentPrerequisites 1000BASE-SX Chapter Installation Avaya P333R-LB User’s Guide Powering On Avaya P330 Module DC Powering Up the Avaya P330Powering On Avaya P330 Module AC Post-Installation Avaya P333R-LB Front and Back Panels Avaya P333R-LB Front PanelPWR OFF Bups Input Connector Bups Input Connector StickerEstablishing a Serial Connection Configuring the Terminal Serial Port ParametersConnecting a Terminal to the Avaya P330 Serial port P330 Sessions Assigning P330’s IP Stack AddressEstablishing a Telnet Connection For example telnetOverview Connecting a Modem to the Console PortEstablishing a Modem PPP Connection with the P330 CLI Architecture Security LevelsEntering the Supervisor Level Defining new local usersIntroduction to Radius Exiting the Supervisor LevelEntering the CLI 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 Operating parameters System Parameter ConfigurationIdentifying the system Network Time Acquiring Protocols Parameter Configuration UTCBasic Switch Configuration Avaya P333R-LB User’s Guide Avaya P330 Default Settings Default Settings of the P330Configuring the Switch 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 Ethernet Avaya P330 Layer 2 FeaturesOverview Configuring Ethernet Parameters MAC Address Flow ControlPriority 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 Pbnac Implementation in the P330 Family Port Based Network Access Control PbnacHow Port Based Authentication Works Configuring the P330 for Pbnac Pbnac CLI CommandsChapter Avaya P330 Layer 2 Features Avaya P330 Layer 2 Features Spanning Tree per Port Spanning Tree ProtocolSpanning Tree Protocol Port Roles Rapid Spanning Tree Protocol RstpAbout the 802.1w Standard Spanning Tree Implementation in the P330 Family Spanning Tree Protocol CLI Commands Spanning Tree Protocol CLI CommandssChapter Avaya P330 Layer 2 Features MAC Security Implementation in P330 MAC Security CLI CommandsMAC Security 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-LBImplementation of Stack Health in the P330 Family Stack Health CLI CommandsStack Health 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 Multinetting Multiple Subnets per Vlan Routing ConfigurationForwarding 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 Overview Static Routing ConfigurationStatic Routing Configuration CLI Commands 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 Re-broadcast Configuration CLI Commands NetBIOS Re-broadcast ConfigurationNetBIOS Overview Policy Configuration Policy Configuration OverviewEnforcement Default List BehaviorPolicy Configuration CLI Commands Policy and Load Balancing110 Avaya P333R-LB User’s Guide Policy Configuration Example Avaya P330 PolicyIP Fragmentation/Reassembly CLI Commands IP Fragmentation and ReassemblyIP Fragmentation and Reassembly Overview 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 SrrpAdditional Redundancy Schemes Real Server Group BackupRSG Backup Configuration Example 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 Benefits Load Balancing in the P333R-LBFirewall Load Balancing 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 HashHealth Check Weighted FirewallsSelecting a Load Balancing Metric Implementation PersistencyNon-Transparent Routing Firewall Load Balancing 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 Half NAT Load Balancing Server Load BalancingBenefits 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 Load Balancing Metrics DNS ConfigurationCombining Two Cache Applications on the Same Real Caches 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 your Local Web Site Installing the Java Plug-inInstall from the Avaya Site Embedded Web Manager P330 Page Troubleshooting the Installation Troubleshooting the InstallationTroubleshooting the Installation Adding an Expansion Sub-module to Avaya P330 MaintenanceAdding/Replacing an Expansion Sub-module Replacing an Existing Expansion Sub-moduleReplacing the Stacking Sub-module Saving Configuration DefinitionsWithout Saving Configuration Definitions Obtain Software Online Downloading Software Updating the SoftwareSoftware Download 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
Related manuals
Manual 10 pages 7.24 Kb

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.
Top Page Image Contents