Cabletron Systems EMM-E6 manual Link/Seg Traps, What is a Segmentation Trap?

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Chapter 4

Link/Seg Traps

What are Link and Segmentation traps; enabling and disabling these traps at the device, module, and port levels

Among the traps which Cabletron devices are designed to generate are traps that indicate when a repeater port gains or loses a link signal, when the repeater segments (disconnects) a port due to collision activity, and when a segmented port becomes active again. In some networks, these Link and Segmentation traps may be more information than a network manager wants to see. So SPMA provides you with a means to selectively enable and disable Link and Segmentation traps: you can turn traps on and off for all ports on the device, all ports on a selected module or modules, or for individual ports.

NOTE

SPMA does not accept the trap messages; that task is left to your network management system. (See the appropriate network management system documentation for details about viewing trap messages.) When this utility is used in stand-alone mode, traps will either be ignored when they return to the workstation from which you are running SPMA for the EMM-E6, or they will turn up at another management workstation which has been configured to accept traps. Note also that, regardless of the configuration performed using this utility, NO traps will be sent by the device unless its trap table has been properly configured; see the EMM-E6 hardware manual and/or the Trap Table chapter in the SPMA Tools Guide for more information.

What is a Segmentation Trap?

Cabletron’s Ethernet repeaters count collisions at each port. If a port experiences 32 consecutive collisions, the repeater segments the port to isolate the source of the collisions from the rest of the network. When the repeater segments a port, it generates a portSegmenting trap. As soon as a segmented port receives a good packet, the repeater reconnects the port to the network and generates a portUnsegmenting trap.

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Contents EMM-E6 Page Virus Disclaimer Restricted Rights Notice Contents Chapter Security Chapter Source AddressingAppendix a EMM-E6 MIB Structure Chapter Front Panel RedundancyContents Introduction Using the EMM-E6 User’s GuideUsing the EMM-E6 User’s Guide UPS What’s not in the EMM-E6 User’s GuideConventions Window Conventions Screen DisplaysButton Using the MouseGetting Help Year 2000 Compliance EMM-E6 FirmwareUsing the Hub View Using the EMM-E6 Hub ViewHub View Front Panel Navigating Through the Hub ViewDate and Time UptimeDevice Name Device LocationUsing the EMM-E6 Hub View EMM-E6 Ports Display Brim Ports Using the Mouse in a Hub View ModulePort Display Form Hub View Port Color CodesMonitoring Hub Performance Port Display Form Load ErrorsTraffic CollisionsFrame Sizes ProtocolsPort Type Using the EMM-E6 Hub View Name and Location Checking Device Status and Updating Front Panel InfoContact Chassis Type Checking Network StatusActive Users NameModule Type Checking Module StatusLink Status Checking Port StatusMedia Type StatusTopology Type Viewing the IP Address TableChecking Statistics Launching the Global Find MAC Address ToolUsing the EMM-E6 Hub View Total Packets Received BytesAvg Packet Size Broadcast PacketsAlignment Errors Total ErrorsCRC Errors OOW CollisionsGiant Frames Runt FramesProtocols/Frames Statistics Viewing the Port Source Address ListUsing the EMM-E6 Hub View Managing the Hub Setting the Polling IntervalsDevice General Status Contact StatusDevice Configuration Configuring FNB ConnectionsPort Operational State StatisticsConfiguring RIC MIM Connections To configure FNB connectivity for an individual port 15. Tpxmim Channel Selection Window Setting a Port’s Trunk TypeTo change a port’s topology status Enabling/Disabling MIM Ports Alarm Configuration From the command line stand-alone mode Using Alarm ConfigurationFrom the icon From the Hub ViewCRC Configuring AlarmsBroadcast Setting Repeater AlarmsSet Repeater Alarms Window Setting and Changing AlarmsSetting Module Alarms Setting Module and Port AlarmsSet the Status to Enabled Set Module Alarms WindowSet Port Alarms Window Setting Port AlarmsSet the Status to Enabled Alarm Configuration Setting Module and Port Alarms Link/Seg Traps What is a Segmentation Trap?Enabling and Disabling Link/Seg Traps What is a Link Trap?Spmarun r4hwtr IP address community name Viewing and Configuring Link/Seg Traps for Hub Modules Configuring Link/Seg Traps for the RepeaterModule Traps Window Port Traps Window Viewing and Configuring Link/Seg Traps for PortsLink/Seg Traps Link/Seg Traps Enabling and Disabling Link/Seg Traps Repeater Redundancy Setting Network Circuit RedundancySpmarun r4red IP address community name Configuring a Redundant CircuitChannel X Redundancy Window Add Circuit Address Window Repeater Redundancy To set the Poll Interval Monitoring RedundancyDisplaying the Source Address List Source AddressingDisplaying the Source Address List Source Addressing Setting the Aging Time Setting the Hash TypeLocking Source Addresses Source Address Locking on Older Devices Configuring Source Address Traps Repeater-level Traps Module- and Port-level Traps Source Addressing Port Source Address Traps Window Finding a Source AddressClick on to exit the window Security Spmarun r4sec IP address SU community name What is LANVIEWSECURE?Secure address assignment New definitions for station and trunk portsTrunk port security Continuous learning mode Newest Lanviewsecure FeaturesConfigurable violation response Full or partial security against eavesdroppingSecurity on Non-LANVIEWSECUREMIMs Learned addresses resetForced non-secure status Configuring Security Security To assign secure addresses to a port Addresses Window Add MAC Address Window Boards with Multiple CachesTips for Successfully Implementing Eavesdropper Protection Resetting Learned AddressesEnabling Security and Traps Security Channel X Security Window Repeater-level Security and TrapsModule-level Security and Traps Channel X Module Security Window Channel X Port Security Window Port-level Security and TrapsSecurity Front Panel Redundancy Setting Front Panel RedundancySetting Front Panel Redundancy Add Circuit Address Window Front Panel Redundancy Setting Front Panel Redundancy EMM-E6 MIB Structure Ietf MIB SupportChassis MGR MIB ComponentsIP Services Host ServicesRepeater One, Repeater Two, and Repeater Three Ctron Use OnlyDistributed LAN Monitor Rmon DefaultMIB Navigator Rmon HostBrief Word About MIB Components and Community Names EMM-E6 MIB Structure Index Index-2 Index-3 Index Index-4
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