Ospf Open Shortest Path First Configuration | Avaya P332G-ML

Chapter 12 Avaya P330 Layer 3 Features

OSPF (Open Shortest Path First) Configuration

OSPF Overview

OSPF is a routing protocol developed for IP networks based on the shortest path first or link-state algorithm. It was introduced to overcome the limitations of RIP in increasingly complex network designs.

OSPF is based on the cost of a particular path. In contrast, RIP uses hops as a path criterion. Also, updates are sent on a “need to know” basis rather than every 30 seconds as with RIP.

The advantage of shortest path first algorithms is that they result in smaller more frequent updates everywhere. They converge quickly, thus preventing such problems as routing loops and Count-to-Infinity (when routers continuously increment the hop count to a particular network). This stabilizes the network.

The disadvantage of shortest path first algorithms is that they require a lot of CPU power and memory. .

Routers use link-state algorithms to send routing information to all nodes in an internetwork by calculating the shortest path to each node. This calculation is based on a topography of the Internet constructed by each node. Each router sends that portion of the routing table (keeps track of routes to particular network destinations) that describes the state of its own links, and it also sends the complete routing structure (topography).

The P330 supports the OSPF routing protocol. The P330 can serve as an OSPF Autonomous System Boundary Router (ASBR) by configuration of route redistribution. The P330 can be installed in the OSPF backbone area (area 0.0.0.0) or in any OSPF area that is part of a multiple areas network. However, the P330 cannot be configured to be an OSPF area border router itself.

The P330 supports the equal-cost multipath (ECMP) feature which allows load balancing by splitting traffic between several equivalent paths.

While OSPF can be activated with default values for each interface using a single command, many of the OSPF parameters are configurable.

For a detailed description of OSPF, refer to the OSPF standards and published literature.

Avaya P332G-ML User’s Guide

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Avaya P332G-ML manual Ospf Open Shortest Path First Configuration, Ospf Overview

Contents

Avaya P332G-ML Page Table of Contents Section Installing the P330 Section Configuration of the P330 LAG Bootp Section Troubleshooting and Maintaining the P330 Avaya P332G-ML User’s Guide Vii Table of Contents Viii Avaya P332G-ML User’s Guide Safety Information FCC Notice Before you InstallConventions Used in the Documentation CLI Conventions P332GAvaya P332G-ML User’s Guide Overview of the P330 Page Introduction Avaya P332G-ML OverviewAbout the P332G-ML Command Line Interface CLI Layer 3 Features P330-MLAvaya P332G-ML Highlights Network Management and Monitoring Fans, Power Supply and BUPS-ML Monitoring Avaya Multi-Service Network Manager MsnmPort Mirroring Avaya P332G-ML Overview Avaya P332G-ML User’s Guide Avaya P330 Standards Supported Standards and CompatibilityIetf Layer Ietf Network Monitoring P332G-ML Switch SpecificationsPower Requirements Physical Safety AC Version SafetySafety DC Version EMC Emissions Interfaces Stacking Sub-moduleBasic Mtbf Table B.1 Stacking Sub-module Approved SFF/SFP Gbic Transceivers Safety InformationLaser Classification Usage Restriction Installing and Removing a SFF/SFP Gbic Transceiver InstallationSpecifications LX Transceiver Agency Approval Gigabit Fiber Optic CablingTable B.2 Gigabit Fiber Optic Cabling Console Pin Assignments Connector Pin Assignments Chapter Avaya P332G-ML User’s Guide Installing the P330 Page Required Tools InstallationSite Preparation Environmental Prerequisites Power Requirements DC Power Requirements AC P332G-ML Rack Mounting Rack Mounting Optional Connecting Stacked Switches Installing the X330STK-ML Stacking Sub-Module Optional Incorrect Stack Connection To connect stacked switches P330 Stack Connections Making Connections to Network Equipment Connecting Cables to Network EquipmentPrerequisites ELX Powering On Avaya P330 Module AC Powering Up the Avaya P330Powering On Avaya P330 Module DC Post-Installation Avaya P332G-ML Front Panel Avaya P332G-ML Front and Rear Panels LED Name Description LED Status Full Duplex mode Always ON. All ports are full-duplex only LAG Avaya P332G-ML Back Panel BUPS-ML Input Connector Sticker BUPS-ML Input ConnectorPage Connecting a Terminal to the Avaya P330 Serial port Configuring the Terminal Serial Port ParametersEstablishing a Serial Connection Assigning P330’s IP Stack Address P330 Sessions At the prompt, type Establishing a Telnet Connection Establishing a Modem PPP Connection with the P330 Connecting a Modem to the Console PortOverview Security Levels User Authentication Defining new local users Entering the Supervisor LevelExiting the Supervisor Level Introduction to Radius Entering the CLI Radius Authentication Procedure Radius Commands Allowed Managers Allowed Manager CLI Commands Configuration of the P330 Page Configuring the Switch Default Settings of the P330Avaya P330 Default Settings Default Settings of the P330 Chapter Default Settings of the P330 Default Settings of the P330 Avaya P332G-ML User’s Guide Basic Switch Configuration Identifying the system System Parameter ConfigurationOperating parameters UTC Network Time Acquiring Protocols Parameter Configuration Basic Switch Configuration Avaya P332G-ML User’s Guide Overview Avaya P330 Layer 2 FeaturesEthernet Configuring Ethernet Parameters Priority Flow ControlMAC Address Configuration CLI Commands for Ethernet Feature Ethernet Configuration CLI CommandsCAM Table Ethernet Implementation in the Avaya P332G-ML Vlan Overview Vlan Configuration Multi Vlan Binding Vlan Tagging Illustrates these binding modes in P330 Ingress Vlan Security Automatic Vlan Learning Vlan CLI Commands Vlan CLI Commands Vlan Implementation in the Avaya P332G-ML 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 Commandss Spanning Tree Protocol CLI Commands Spanning Tree Protocol CLI Commandss MAC Aging CLI Commands Configuring the P330 for MAC AgingMAC Aging CLI Commands MAC Aging LAG CLI Commands LAG CLI CommandsLAG Overview LAG Implementation in the Avaya P330 Family of Products Port Redundancy Operation Port Redundancy Redundancy CLI Commands check spec Port Redundancy CLI CommandsIntermodule Port Redundancy Avaya P330 Layer 2 Features IP Multicast Filtering IP Multicast CLI Commands IP Multicast CLI CommandsIP Multicast Implementation in the Avaya P332G-ML Implementation of Weighted Queuing in the P330-ML Weighted QueuingWeighted Queuing CLI Commands Weighted Queuing CLI Commands Weighted Queuing CLI Commands Stack Health CLI Command Stack Health CLI CommandsStack Health Implementation of Stack Health in the P330 Family Port Classification Port Classification CLI Commands Stack Redundancy Avaya P330 Layer 2 Features Avaya P332G-ML User’s Guide What is Routing? Avaya P330 Layer 3 Features Routing Forwarding Routing ConfigurationMultinetting Multiple Subnets per Vlan IP Configuration CLI Commands IP Configuration Assigning Initial Router Parameters Obtaining and Activating a License Key Create the management/routing VLAN. Use the command Obtaining a Routing License Key Activating a Routing License Key License Key CLI Commands RIP Overview RIP Routing Interchange Protocol Configuration DIfferences Between RIP and RIP2 RIP CLI Commands Avaya P330 Layer 3 Features Ospf Overview Ospf Open Shortest Path First Configuration Ospf CLI Commands Static Routing Overview Static Routing Configuration Route Preferences Static Routing Configuration CLI Commands RIP Route Redistribution Route Redistribution Commands ARP Overview ARP Address Resolution Protocol Table Configuration ARP Table ARP CLI Commands DHCP/BOOTP Relay BOOTP/DHCP Overview BOOTP/DHCP CLI Commands NetBIOS Overview NetBIOS Re-broadcast ConfigurationNetBIOS Re-broadcast Configuration CLI Commands Vrrp Overview Vrrp Virtual Router Redundancy Protocol Configuration Case#1 Vrrp Configuration Example Case #2 Vrrp CLI Commands Avaya P332G-ML User’s Guide 109 Srrp Configuration Example Srrp ConfigurationSrrp Overview Srrp CLI Commands Policy Configuration Overview Policy Configuration Policy Configuration CLI Commands Avaya P330 Policy Policy Configuration Example P330-1super#ip access-list 100 2 fwd3 tcp any host IP Fragmentation and Reassembly Overview IP Fragmentation and ReassemblyIP Fragmentation/Reassembly CLI Commands Layer 3 Configuration File Avaya P330 Layer 3 Features 118 Avaya P332G-ML User’s Guide System Requirements Embedded Web Manager Embedded Web Manager/Browser Compatability Running the Embedded Web Manager Welcome Web-based Manager Install from the Avaya Site Installing the Java Plug-inInstall from your Local Web Site 124 Avaya P332G-ML User’s Guide P330 Page Troubleshooting the Installation Troubleshooting the InstallationPower supply is not user-replaceable Page Replacing the Stacking Sub-module Maintenance Chapter Maintenance 130 Avaya P332G-ML User’s Guide Software Download Updating the SoftwareObtain Software Online Downloading Software Download New Version without Overwriting Existing Version United States How to Contact Us UAE AP Asia Pacific Region 136 Avaya P332G-ML User’s Guide