Cabletron Systems 9H42X-XX manual How Rising and Falling Thresholds Work

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Alarm Configuration

The top portion of the window contains the device information boxes, as well as the event index number and the event description; the log itself includes the following fields:

Index

This index number is not the event’s index, but a separate

 

index that uniquely identifies this occurrence of the

 

event.

Time

Indicates the date and time of each event occurrence.

Description

Provides a detailed description of the alarm that

 

triggered the event: whether it was a rising or falling

 

alarm, the alarm index number, the alarm variable name

 

and object identifier (OID), the alarmSampleType

 

(1=absolute value; 2=delta value), the value that

 

triggered the alarm, the configured threshold that was

 

crossed, and the event description. Use the scroll bar at

 

the bottom of the log to view all the information

 

provided.

Each log will hold only a finite number of entries, which is determined by the resources available on the device; when the log is full, the oldest entries will be replaced by new ones.

How Rising and Falling Thresholds Work

Rising and falling thresholds are intended to be used in pairs, and can be used to provide notification of spikes or drops in a monitored value — either of which can indicate a network problem. To make the best use of this powerful feature, however, pairs of thresholds should not be set too far apart, or the alarm notification process may be defeated: a built-in hysteresis function designed to limit the generation of events specifies that, once a configured threshold is met or crossed in one direction, no additional events will be generated until the opposite threshold is met or crossed. Therefore, if your threshold pair spans a wide range of values, and network performance is unstable around either threshold, you will only receive one event in response to what may be several dramatic changes in value. To monitor both ends of a wide range of values, set up two pairs of thresholds: one set at the top end of the range, and one at the bottom. Figure 3-8illustrates such a configuration.

How Rising and Falling Thresholds Work

3-27

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Contents Cabletron Systems Virus Disclaimer Page Restricted Rights Notice Page Contents Chapter Statistics Chapter BridgingIndex Contents Viii Introduction Introduction Using the 9H42x-xx User’s Guide Related Manuals Software ConventionsCommon 9H42x-xx Window Fields Device Name IP AddressLocation MAC AddressUsing Buttons Using On-line HelpGetting Help 9H42x-xx Firmware Getting Help from Cabletron Systems’ Global Call CenterIntroduction 9H42x-xx Firmware 9H42x-xx Module View From an individual device iconViewing Module Information From the MMAC-Plus Chassis ViewFront Panel Information Connection StatusUp Time Port StatusBoot Prom Menu StructureFirmware TimeH42x-xx Module View Menu Structure Device MenuPort Status Menu Utilities MenuHelp Menu Bridge MenuPort Status Displays Port MenuSelecting a Port Status View StatusErrors LoadMapping Chassis Manager Window SpeedType Port Status Color CodesViewing the Device Type Chassis Manager Window To view the Chassis Manager windowViewing I/F Summary Information UpTimeIndex Description StaInterface Performance Statistics/Bar Graphs Raw CountsRate Viewing Interface Detail AddressError UnicastNon-Unicast DiscardedUsing the Find Source Address Feature Packets Transmitted Transmit onlyMaking Sense of Detail Statistics Managing the Module Configuring PortsStandard Mode Configuring Standard Ethernet PortsFull Duplex Configuring Fast Ethernet Ports Fast Ethernet ConfigurationCurrent Operational Mode Desired Operational ModePort Type Link StateAdvertised Abilities Remote CapabilitiesSetting the Desired Operational Mode Setting the Device Date and Time 10. Edit Time WindowEnabling and Disabling Ports 11. Edit Date WindowTo enable or disable bridging for an individual interface 9H42x-xx Module View Managing the Module Alarm Configuration About Rmon Alarms and EventsBasic Alarm Configuration Alarm ConfigurationAccessing the Basic Alarm Configuration Window Rmon Basic Alarm Configuration WindowViewing Alarm Status Kilobits Total Errors Broadcasts/MulticastsPort Number If NumberLog/Trap Polling IntervalRising Threshold Rising ActionCreating and Editing a Basic Alarm Alarm Configuration Alarm Configuration Disabling a Basic Alarm Viewing the Basic Alarm LogAlarm Configuration Advanced Alarm Configuration Accessing the Rmon Advanced Alarm/Event ListAlarm Configuration Such as the Hosts component, not present, or Creating and Editing an Advanced Alarm Rmon Create/Edit Alarms WindowAlarm Configuration Alarm Configuration Alarm Configuration Table index.lengthin bytes.instancein decimal format Alarm Configuration Creating and Editing an Event Rmon Create/Edit Events Window Alarm Configuration Adding Actions to an Event Rmon Create/Edit Actions Window Or deleted use the button to update the table at any time Deleting an Alarm, Event, or Action Viewing an Advanced Alarm Event LogHow Rising and Falling Thresholds Work Event Accessing the Statistics Windows StatisticsTot. Errors Rmon StatisticsProblems BytesPackets Drop EventsFrame Size Bytes Packets Viewing Total, Delta, and Accumulated Statistics Interface Statistics Printing StatisticsInterface Statistics Window Unicast Bridging Bridging BasicsAn Overview of Bridge Management More on Transparent BridgingBridge Status Window Spanning Tree State Interface Type Bridge AddressInterface Speed Enabling and Disabling All Installed Interfaces Enabling and Disabling BridgingEnabling and Disabling Individual Interfaces From the Bridge Status windowBridge Statistics Performance GraphsForwarded Green Total Errors Red Filtered MagentaXmitted Blue Configuring the Bridge Performance GraphsUsing Source Addressing Altering the Ageing TimeBridge Spanning Tree Viewing Spanning Tree Parameters Bridge Spanning Tree WindowBridge-level Parameters Bridge PriorityRoot Bridge Root CostForwarding Delay ProtocolHello Time Max AgePort-specific Parameters Changing Bridge Spanning Tree Parameters Designated PortTopology Changing Bridge PriorityChanging the Spanning Tree Algorithm Protocol Type Changing Hello TimeChanging Max Age Time Changing Forwarding Delay Time Changing Port PriorityChanging Path Cost Filtering Database Dynamic, or LearnedFiltering Database Window List NumberCapacity Ageing TimeConfiguring the Filtering Database Source PortReceive Port Port FilteringChanging the Type of Entry Changing the Receive PortChanging the Port Filtering Action Adding or Deleting Individual EntriesConfiguring Duplex Modes Clearing All Permanent, Static, or Dynamic EntriesTo access the Duplex Modes window Bridging Bridging Configuring Duplex Modes Index NumericsIndex-2 Index-3 Index Index-4

9H42X-XX specifications

Cabletron Systems 9H42X-XX is an advanced networking device recognized for its robust performance and reliability in various enterprise environments. Designed to meet the growing demands of data communication, this model serves as a vital component of network infrastructure, offering a myriad of features and technologies.

One of the standout characteristics of the 9H42X-XX is its high-speed data processing capabilities. Equipped with multiple Gigabit Ethernet ports, it ensures rapid data transfer rates, making it ideal for bandwidth-intensive applications. This model supports both IPv4 and IPv6 addressing, ensuring compatibility with modern networking standards and future-proofing the investment for organizations transitioning to newer technologies.

The 9H42X-XX excels in flexibility and scalability, accommodating a range of networking topologies. Its modular design allows for the addition of different interface cards, catering to specific networking requirements such as VoIP, video streaming, and cloud services. This adaptiveness is crucial for organizations that must optimize their network as needs evolve over time.

Security is a primary consideration in the design of the 9H42X-XX. With built-in firewall capabilities and support for advanced encryption protocols, data integrity and confidentiality are ensured. Furthermore, the device offers robust access control features, allowing organizations to define user permissions and protect sensitive information from unauthorized access.

Another important feature is the comprehensive management options available with the 9H42X-XX. It provides a user-friendly interface for network administrators to monitor traffic, configure settings, and troubleshoot issues. This ease of management contributes to reduced downtimes and better overall network efficiency.

Additionally, the Cabletron Systems 9H42X-XX is known for its durability and performance consistency in varying environmental conditions. This resilience makes it suitable for both indoor and outdoor deployments, further extending its usability across different types of organizations.

In summary, the Cabletron Systems 9H42X-XX is a versatile networking solution that combines high-speed connectivity, security features, and ease of management within its robust architecture. Its adaptability and technical specifications position it as a reliable choice for enterprises looking to upgrade their network infrastructure and accommodate future growth.
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