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Managing the Hub

2-23

The IRM2 Chassis View

Unknown Protocol

(Received only)

Displays the number of packets received which were discarded because they were
created under an unknown or unsupported protocol.

Packets Received

(Received only)

Displays the number of packets received by the selected interface.

Transmit Queue Size

(Transmit only)

Displays the number of packets currently queued for transmission from this
interface. The amount of device memory devoted to buffer space, and the traffic
level on the target network, determine how large the output packet queue can
grow before the 9H42x-xx module will begin to discard packets.

Packets Transmitted

(Transmit only)

Displays the number of packets received by the selected interface.

Making Sense of Detail Statistics

The statistics available in this window can give you an idea of how an interface is
performing; by using the statistics in a few simple calculations, it’s also possible to
get a sense of an interface’s activity level:

To calculate the percentage of input errors:

Received Errors /Packets Received

To calculate the percentage of output errors:

Transmitted Errors /Packets Transmitted

To calculate the total number of inbound and outbound discards:

Received Di Transmitted Discards

To calculate the percentage of inbound packets that were discarded:

Received Discards /Packets Received

To calculate the percentage of outbound packets that were discarded:

Transmit Discards /Packets Transmitted

NOTE

Unlike the Interface Detail window, which this window replaces, the Interface Statistics
window does not offer Disable or Test options. These options are available in the
Interface Group window, which can be accessed via the System Group window (select
System Group...

from the Device menu). Refer to your Generic SNMP User’s Guide

for further information on the System Group and Interface Group windows.

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Содержание IRM2

Страница 1: ...IRM2 User s Guide...

Страница 2: ......

Страница 3: ...ensed Software is virus free Copyright 2000 by Enterasys Networks All rights reserved Printed in the United States of America Order Number 9031597 04 April 2000 Enterasys Networks P O Box 5005 Rochest...

Страница 4: ...ter AT Operating System 2 Personal System 2 RISC System 6000 and Workplace Shell are trademarks of International Business Machines Corporation i960 microprocessor is a registered trademark and Intel a...

Страница 5: ...operative 3 Reproduced for safekeeping archives or backup purposes 4 Modified adapted or combined with other computer software provided that the modified combined or adapted portions of the derivative...

Страница 6: ...iv...

Страница 7: ...Status View 2 8 Port Status Color Codes 2 11 The Physical Chassis View 2 11 The Chassis Manager Window 2 12 Viewing Hardware Types 2 13 Device Type 2 13 Module Type 2 13 Managing the Hub 2 14 Setting...

Страница 8: ...ress 4 1 Using Port Locking and Unlocking 4 2 Using Source Addressing 4 4 Setting the Device Ageing Time 4 5 Chapter 5 Alarm Limits Accessing the Alarm Limits Windows 5 1 Configuring Alarms 5 6 Settin...

Страница 9: ...vii Contents Chapter 8 Redundancy Continued Reconfiguring a Circuit 7 9 Changing Port Status 7 10 Resetting a Circuit 7 11 Index...

Страница 10: ...Contents viii...

Страница 11: ...gather a full array of statistical information from the IRM2 at the device board and port levels including data throughput statistics and error breakdowns You can also set alarms and traps for the hub...

Страница 12: ...tion window to determine whether your IRM2 will send certain common SNMP traps to your Enterasys management station Chapter 7 Redundancy describes how to configure redundant circuits for your IRM2 rep...

Страница 13: ...1 Mouse Buttons For many mouse operations this document assumes that the left primary mouse button is to be used and references to activating a menu or button will not include instructions about whic...

Страница 14: ...n is completed It is often a pre cursor to Drag operations Dragging means to move the mouse pointer across the screen while holding the mouse button down It is often used for drag and drop operations...

Страница 15: ...number indicating the position of the monitored board in the chassis Board Name Displays the user entered name for the board You can change the board name via the Name option available from the Board...

Страница 16: ...may have while using NetSight Element Manager Using On line Help You can use the IRM2 window buttons to obtain information specific to the device When you click on a Help button a window will appear...

Страница 17: ...your email address By BBS 603 335 3358 Modem Setting 8N1 8 data bits 1 stop bit No parity Send your questions comments and suggestions regarding NetSight documentation to NetSight Technical Communica...

Страница 18: ...Introduction 1 8 Getting Help...

Страница 19: ...Physical View provides a graphical representation of the actual board faces The Chassis View window serves as a single point of access to all other IRM2 windows and screens which are discussed at len...

Страница 20: ...and ports installed in the MMAC chassis Figure 2 1 IRM2 Chassis View Window By clicking in designated areas of the chassis graphical display as detailed later in this chapter or by using the menu bar...

Страница 21: ...a physical change in the hub a board is inserted or removed note that board and port menus are inactive during this stand by state Blue indicates an unknown contact status polling has not yet been es...

Страница 22: ...ternal clock Menu Structure By clicking on various areas of the IRM2 Chassis View display you can access menus with device repeater board and port level options as well as utility applications which a...

Страница 23: ...menu bar you can access the following selections Device Type which displays a window containing a description of the device being modeled i e IRM2 Edit Device Time and Edit Device Date which allow you...

Страница 24: ...yed in the port text boxes in the logical Chassis View window Load will display the portion of network load processed by each port as a percentage of the theoretical maximum load 10Mbits sec of an Eth...

Страница 25: ...IRM2 module This includes the MIB Tree utility which provides direct access to the IRM2 s MIB information Refer to your Utilities User s Guide for information on this utility The Help Menu The Help M...

Страница 26: ...ports AUI or Fiber Optic will be used as the repeater interface for a connected network segment MIM Port Status Displays When you open the Chassis View window each port on the IRM2 and the associated...

Страница 27: ...or Link status conditions Admin Link ON OFF SEG segmented or NLK not linked Admin ON or OFF Link LNK link NLK not linked or N A not available If you have selected the Admin Link status mode a port is...

Страница 28: ...ink feature the displayed Admin Link Admin and Link status conditions will not always follow the pattern described above Under Admin Link status mode BNC ports will display as ON if there is a valid c...

Страница 29: ...ode which incorporates its own color coding scheme The Physical Chassis View By default the Chassis View window displays a Logical View of the hub and its installed modules the Logical View provides p...

Страница 30: ...unctionality from a collection of proprietary MIBs and IETF RFCs The Chassis Manager window Figure 2 4 is a read only window that displays the MIBs and the MIB components and therefore the functionali...

Страница 31: ...Type option on the Device menu brings up a window that describes the management device being modeled Figure 2 5 Sample Device Type Window Module Type From the Board menus on the IRM2 Chassis View wind...

Страница 32: ...you with the tools you need to configure your hub and keep it operating properly Hub management functions include setting device date and time configuring the IRM2 front panel repeater port setting bo...

Страница 33: ...dd yy format either by highlighting the field you wish to change and using the up and down arrow buttons or by simply entering the new value in the appropriate field 3 Click on to save your changes or...

Страница 34: ...Port Association The Port Association window Figure 2 9 will appear Figure 2 9 Repeater Port Association Click on the appropriate radio button indicates that Port 2 the Fiber Optic Link Port will be m...

Страница 35: ...access the board menu 2 Drag down to Name The Board Name Text Box Figure 2 10 will appear Figure 2 10 Board Name Text Box 3 Enter the name of the board up to 20 characters in length 4 Click on Your ne...

Страница 36: ...or the traffic processed by each network interface on your device The window also provides access to a detailed statistics window that breaks down Transmit and Receive traffic for each interface To ac...

Страница 37: ...administrative state of the interface Up or Down Interface Performance Statistics Bar Graphs The statistical values and where available the accompanying bar graphs to the right of the interface descri...

Страница 38: ...d to a higher layer protocol In Unknown Packets received by the device interface that were discarded because of an unknown or unsupported protocol Out Octets Octets transmitted by the interface includ...

Страница 39: ...a complete description of each parameter Viewing Interface Detail The Interface Statistics window Figure 2 12 provides detailed MIB II interface statistical information including counts for both tran...

Страница 40: ...an one device on the network segment The multicast field includes a count of broadcast packets those that are recognized by all devices on a segment These statistics are displayed in the pie chart col...

Страница 41: ...how an interface is performing by using the statistics in a few simple calculations it s also possible to get a sense of an interface s activity level To calculate the percentage of input errors Rece...

Страница 42: ...urrent interface 1 Click on The current interface will now be operating in a closed state Using the Applications menu The Applications button leads you to a menu that indicates device associated SNMP...

Страница 43: ...en badly formed or somehow mangled in transmission These statistics can give you a good overall sense of the usage your network or network segment is experiencing To help you better understand and tra...

Страница 44: ...een Collisions red and the two error modes Hard Errors blue and Soft Errors yellow Accessing the Statistics Windows To access the Repeater Statistics window 1 Click on Repeater on the Chassis View men...

Страница 45: ...on 2 00 Firmware and Above Displays the number of users identified by MAC Ethernet address communicating via a port on the IRM2 managed hub For an individual port if Active Users is greater than one i...

Страница 46: ...um Ethernet frame size of 1518 bytes excluding the preamble Soft Errors Alignment Errors Displays the total number of misaligned packets received by the device board or port A misaligned packet is one...

Страница 47: ...values for packets errors and bytes at the device board or port level The values are color coded as follows Green Elapsed Indicates the level of activity during the last time interval Blue Average In...

Страница 48: ...lick on the appropriate Port to display the port menu 2 Drag down to Timer Statistics and release The port level Statistics window will appear The Board and Port Timer Statistics windows are the same...

Страница 49: ...2 and 3 continue to change the minutes and seconds fields as desired 5 Click OK to accept your configurations or click Cancel to exit the window without accepting any changes The Timer Statistics win...

Страница 50: ...to display the repeater menu 2 Drag down to Summary Statistics and release The Repeater Summary Statistics window Figure 3 4 will appear Figure 3 4 Device level Summary Statistics Window The device l...

Страница 51: ...ns and their associated colors are described in detail in Chapter 2 of this manual The Percent Load Percent Errors or Percent Collisions indicated by the scale above the bar graph Configuring Summary...

Страница 52: ...asures the number of packets or errors that are processed by the device as a whole or by the selected board or port You can select the statistics that you wish to monitor by clicking the buttons at th...

Страница 53: ...detected by the device board or port CRC Errors The total number of packets with CRC Cyclical Redundancy Check detected by the device board or port Runt Packets The number of runt packets detected by...

Страница 54: ...mber of packets coming through the device board or port Configuring the Performance Graph To configure the Performance Graphs 1 Click on Collisions to display the error mode menu 2 Drag to select the...

Страница 55: ...eature Find Source Address allows you to detect the specific IRM2 port through which a given MAC address is communicating Port Locking Unlocking lets you secure your IRM2 against unknown source addres...

Страница 56: ...source addresses at the time locking was enabled if the address is not found in the table that port will automatically shut down no traffic will be allowed through although other station and trunk por...

Страница 57: ...will appear 2 Drag down to Lock Unlock Ports and release The Lock Unlock Ports window Figure 4 2 will appear Figure 4 2 Lock Unlock Ports Window 3 If the repeater s ports are already locked the windo...

Страница 58: ...ugh the selected port To open the Source Addresses window from the Chassis View 1 Click on the appropriate port to display the Port menu 2 Drag down to Source Addressing and release The Port Source Ad...

Страница 59: ...address timer runs continuously beginning at the time the device is turned on or the repeater channel is activated source addresses that are added to the SAT during one timer cycle will remain in the...

Страница 60: ...Using Source Addressing Figure 4 4 Device Ageing Time Window 2 Enter the new Ageing Time in minutes Allowable times are 1 to 1440 3 Click to accept the new Ageing Time or click Cancel to exit the wind...

Страница 61: ...percentage of collisions or errors or a certain number of specific packet types within a user defined time interval You can also use the board and port level Alarms windows to disable a board or port...

Страница 62: ...ater Alarm Limits Window To access the board level Alarm Limits window 1 Click once on the appropriate Board number in the Chassis View to display the board menu will appear 2 Drag down to Alarm Limit...

Страница 63: ...Limits Figure 5 2 Board Alarm Limits Window To access the port level Alarm Limits window 1 Click once on the appropriate Port to display the port menu 2 Drag down to Alarm Limits and release The Port...

Страница 64: ...ket you wish to allow on the selected repeater board or port before an alarm is generated allowable values are 1 15 For example if you enter a value of 1 the alarm will be generated if the repeater bo...

Страница 65: ...field to determine what percentage of packets received by the repeater board or port within the specified time interval can be errors of the selected type or types before an alarm is triggered Allowab...

Страница 66: ...he allowable values are 10 seconds to 23 hours 59 minutes 59 seconds Configuring Alarms You configure alarms by choosing the alarm you wish to enable setting the threshold to the desired level and sel...

Страница 67: ...have opened the appropriate Alarm Limits window then follow the steps outlined below 1 Using the mouse click and drag to highlight the text box in the alarm field you wish to configure Collisions Pac...

Страница 68: ...indow Be sure to click on before closing the window or your changes will not be saved Your Alarm Limits are now set Any condition that exceeds these alarm limits will generate an alarm and disable tha...

Страница 69: ...menu you can enable or disable these traps at all ports on the device Any traps issued by the IRM2 will appear in your Enterasys remote management application s alarm logging facility Refer to your A...

Страница 70: ...been removed Note that BNC thin coax AUI and transceiver ports do not support a link signal BNC ports respond to changes in link status by generating portSegmenting and portUnsegmenting traps see des...

Страница 71: ...d when a station port one receiving packets from no source addresses or from a single source address receives a packet from a source address that is not currently in its source address table Informati...

Страница 72: ...gh you can change a check box to gray to indicate a No SET state there is no practical reason to do so To enable or disable the above described traps at all ports on your IRM2 1 Open the Repeater Trap...

Страница 73: ...resses of designated nodes on the circuit using an Enterasys proprietary poll Should all addresses fail to respond to the poll a backup link will take effect This reduces the risk of total network fai...

Страница 74: ...Redundancy Configuration window Figure 7 1 allows you to add or delete a redundant circuit for your IRM2 as well as Rename Reset Enable Disable or reconfigure the Retry Count for any circuits you hav...

Страница 75: ...ackup Enabling the circuit Physically connecting the backup ports after completely configuring and enabling the circuit After setting up the redundancy scheme for the selected IRM2 you can establish t...

Страница 76: ...ermine the status of the active link The IRM2 will simultaneously poll all addresses on each circuit s list if it cannot establish a link with any address on the list after the designated number of re...

Страница 77: ...lay in green To select the primary and backup paths for the designated circuit 1 In the altered Chassis View window Figure 7 2 click on the port that you wish to specify as primary A port menu will ap...

Страница 78: ...lling continues If no replies are received during the retries the IRM2 will assume the primary link is down and switch traffic to the first backup port To establish the polling interval for all circui...

Страница 79: ...olled Addresses list To activate the circuit 1 Use the drop down list to display the appropriate circuit in the Current Circuit text box note that the current status of the selected circuit enabled or...

Страница 80: ...ing facility Refer to the Alarm and Event Handling User s Guide for your Enterasys management application for more information The testing begins at each circuit s currently active port all ports are...

Страница 81: ...immediate test of all circuits 1 Click Test in the Redundancy Configuration window All configured circuits will be tested immediately Reconfiguring a Circuit Once a circuit is enabled the redundancy...

Страница 82: ...ert to inactive status To remove a port from a circuit 1 On the altered Chassis View click on the port that you wish to remove from the circuit 2 Select Not used to remove the port from the circuit Th...

Страница 83: ...rs all port designations You can reset circuits individually or collectively To reset an individual circuit 1 Use the drop down list to display the appropriate circuit in the Current Circuit text box...

Страница 84: ...disabled If you select No circuits will remain in their current condition CAUTION Any backup port which has been part of an enabled redundant circuit will remain disabled by management until you turn...

Страница 85: ...abling 7 8 naming 7 3 polling addresses for 7 4 reconfiguring 7 9 resetting 7 11 selecting 7 3 Collisions 3 4 5 7 Collisions 5 4 color codes 2 11 color coded port display 2 2 command buttons 1 6 Confi...

Страница 86: ...3 10 board level 3 11 port level 3 11 Physical Status 2 19 port display color codes 2 2 Port Locing trunk port 4 2 Port Locking 4 2 station port 4 2 port locking 2 18 Port Menus 2 8 Port Name 1 5 Por...

Страница 87: ...window 3 7 board level 3 8 configuring 3 9 device level 3 8 T Technical support 1 7 Test Time of Day window 7 9 threshold value 5 7 time interval 5 6 Timer Statistics window 3 5 to change the status...

Страница 88: ...Index Index 4...

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