14 Introduction• Nortel Ethernet Routing Switch 2500 Series Configuration — IPMulticast (NN47215-503)Describes how to configure IP Multicast Routing Protocol features forthe Nortel Ethernet Routing Switch 2500 Series.How to get helpThis section explains how to get help for Nortel products and services.Getting help from the Nortel Web siteThe best way to get technical support for Nortel products is from the NortelTechnical Support Web site:www.nortel.com/supportThis site provides quick access to software, documentation, bulletins, andtools to address issues with Nortel products. More specifically, the siteenables you to:• download software, documentation, and product bulletins• search the Technical Support web site and the Nortel Knowledge Basefor answers to technical issues• sign up for automatic notification of new software and documentationfor Nortel equipment• open and manage technical support casesGetting help through a Nortel distributor or resellerIf you purchase a service contract for your Nortel product from a distributoror authorized reseller, contact the technical support staff for that distributoror reseller.Getting help over the phone from a Nortel Solutions CenterIf you do not find the information you require on the Nortel Technical SupportWeb site, and have a Nortel support contract, you can also get help over thephone from a Nortel Solutions Center.In North America, call 1-800-4NORTEL (1-800-466-7835).Outside North America, go to the following web site to obtain the phonenumber for your region:www.nortel.com/callusNortel Ethernet Routing Switch 2500 SeriesSecurity — Configuration and ManagementNN47215-505 (323165-B) 02.01 Standard4.1 19 November 2007Copyright © 2007, Nortel Networks.