Cabletron Systems 9F122-12 User Manual

Also see for 9E531-24: User guide

Contents

1-3IntroductionDuplex ModeThrough Local Management, each port on the 9E531-24 can be configured tosupport either full or half duplex mode of operation.Runtime IP Address DiscoveryThis feature enables the modules to automatically accept an IP address from aBoot Strap Protocol (BootP) server on the network into NVRAM withoutrequiring a user to enter an IP address through Local Management.When the modules are connected to the network and powered up, Runtime IPAddress Discovery (RAD) checks the modules for an IP address. If one has not yetbeen assigned (module and SmartSwitch 9000 chassis IP address set to 0.0.0.0),RAD checks to see if any of the module interfaces have a link. If so, RAD sendsout Reverse Address Resolution Protocol (RARP) and BootP requests to obtain anIP address from a RARP or BootP server on the network.The RAD requests start at an interval of one per second. The interval then doublesafter every transmission until an interval of 300 seconds is reached. At this point,the interval remains at 300 seconds. The RAD requests continue until an IPaddress is received from a RARP or BootP server, or an IP address is entered usingLocal Management.SmartTrunkSmartTrunk, also referred to as SmartTrunking, is Cabletron Systems’terminology for load balancing or load sharing. SmartTrunk technology providesan easy-to-implement mechanism to group, or aggregate, multiple links of anytechnology together to scale the backbone bandwidth beyond the limitations of asingle link. All links are user-configurable so administrators can scale thebackbone bandwidth by adding SmartTrunk links. The benefits of SmartTrunkinginclude the following:• All purchased bandwidth is used.• Distributed, resilient links increase reliability and performance.• Multiple technologies are supported within a single trunk for maximumflexibility.NOTEFor information on SmartTrunk configuration, refer to theSmartTrunk User’s Guide.