Cabletron Systems EMM-E6 manual Configuring Alarms, Crc

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Alarm Configuration

Configuring Alarms

While configuring alarms for your EMM-E6 you must set the threshold and timebase that will factor in triggering the alarm. From the repeater alarms window you set an alarm timebase that applies to all enabled alarms at the repeater, module and port level; this timebase is the interval (in seconds) over which the selected variable(s) will be counted for comparison to the threshold values. The thresholds are configured separately for each alarm type and at each alarm level (repeater, module, and port). For example, if the Broadcasts alarm is enabled, the repeater-level threshold is set at 1000, and the timebase is set to 10 seconds, the EMM-E6 will generate an alarm if 1000 broadcast packets are processed within a 10-second time period; if the module-level threshold is set to 100, the EMM-E6 will also generate an alarm if 100 broadcast packets are processed by that module within the 10-second time period.

NOTE

Since alarm condition samples are taken at the end of the defined timebase interval, alarm conditions which occur over the span of two timebase intervals will not be detected even if the threshold is crossed within the defined timebase. For example, if the timebase is set to 10 seconds and the broadcast alarm threshold is set to 20, 20 or more broadcast packets may be detected in the last 5 seconds of one time interval and the first five seconds of the subsequent interval (for a total time interval of 10 seconds), but no alarm will be triggered because the broadcasts occurred within two different timebase intervals. The shorter the timebase, the more likely this condition is to occur.

You can set alarm thresholds for the following variables:

Traffic

The traffic threshold determines the total number of packets that can be processed by the repeater, module, or port within the user-defined timebase before an alarm is triggered. Allowable values are 1 to ≈ 4 billion.

Collisions

The collisions threshold sets the number of collisions per good packet that will be allowed on the repeater, module, or port in the user-defined timebase before an alarm is generated. Allowable values are 1 to 15 collisions per good packet.

Errors

The errors threshold determines what percentage of total packets received by the repeater, module, or port within the specified timebase can be errors of the selected type or types before an alarm is triggered. Allowable values are one to 100; percentages will be calculated based on the number of error packets of all types selected. You can select any combination of the following error types:

CRC

If this check box is selected, all packets with Cyclical

 

Redundancy Check (CRC) errors will be included in

 

calculating the overall percentage of errors.

Using Alarm Configuration

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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 CollisionsPort Type ProtocolsFrame Sizes Using the EMM-E6 Hub View Contact Checking Device Status and Updating Front Panel InfoName and Location 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?Trunk port security New definitions for station and trunk portsSecure address assignment Continuous learning mode Newest Lanviewsecure FeaturesConfigurable violation response Full or partial security against eavesdroppingForced non-secure status Learned addresses resetSecurity on Non-LANVIEWSECUREMIMs 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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