Nortel Networks NN47220-101 Troubleshooting the Opening of a Switch, Connecting to a Asem Server

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Opening a Switch 11

Troubleshooting the Opening of a Switch

Errors can occur during the opening of a switch. If an error occurs, ASEM displays an error message. This message is illustrated in "Connection Error Message" (page 11).

Connection Error Message

If this message is displayed, the following items should be checked:

•In slower networks, increase the Retry Count and Timeout values on the Properties screen. See "Setting ASEM Properties" (page 5) for information on performing this task.

•In the Open Device screen, ensure that the correct read and write community strings have been entered for SNMP version 1 and 2 connections. See "Opening a Switch Using SNMP versions 1 or 2" (page 8) for more information on performing this task.

•In the Open Device screen, ensure that the correct SNMP version 3 information has been entered for SNMP version 3 connections. See "Opening a Switch using SNMPv3" (page 10) for more information on performing this task.

•Ensure that the switch is physically connected to the network.

•Ensure that the switch is turned on and receiving power.

•Ensure that the switch has been assigned a correct IP address.

•Ensure that the correct IP address is being used in the Open Device screen.

•Ensure that the problem does not exist because of an unrelated network misconﬁguration.

•Ensure that SNMP access is enabled on the switch. Refer Nortel Application Switch Operating System 24.0 Command Reference (NN47220-105) for information on enabling SNMP access.

•Ensure that switch is not blocking access from the client IP address.

Connecting to a ASEM Server

When connecting to a switch through the ASEM, the user also has the option of connecting to an ASEM Server. To connect to a ASEM Server, follow this procedure:

Nortel Application Switch Element Manager

Users Guide

NN47220-101 (320512-D) 01.01 Standard

5.0 28 January 2008

Copyright © 2008, Nortel Networks

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Contents Users Guide Export Contents Contents Overview Setting Asem PropertiesProperties Screen General Fields Property screen ﬁeldsField Description Polling Fields Snmp FieldsAsem Server Notifications Fields Opening a SwitchOpening a Switch Using Snmp versions 1 or Field DescriptionOpen Device screen Previously Opened Switches Opening a Switch using SNMPv3Connection Error Message Troubleshooting the Opening of a SwitchConnecting to a Asem Server Open Device screen Asem Interface Asem InterfaceAsem Interface Elements Main menubar items Menu Description Asem MenubarMenu Description Detailed Menu Descriptions Nortel, Actions, and Help menusScreen Icon Text DescriptionActions Menu Opens the Manage Switch ConfigurationOpens the Export Preferences screen Opens the Import Preferences screenIcon Text Description Icon Text Description Element Manager User’s Guide this Help MenuAsem Toolbar Monitor Monitor SwitchMonitor Port Click MonitorAsem Screen and Tab Buttons Nortel Refresh Status Tree Preferences screen Asem Tree ControlActions Close IP Address System Description Version MAC Address Asem Context MenusApplication Root Context Menu items Menu Item Description Switch Root Context MenuApplication Root Context Menu Switch Tree Context Menu Switch Root Context Menu items Menu Item DescriptionMenu Item Description Switch Tree Context Menu itemsPort Context Menu Screen Context Menu items Menu Item Description Port Context Menu items Menu Item DescriptionScreen Context Menu Working with Switch Screens Undocking a Switch Screen Viewing a Switch ScreenUndocked Screen Docking a Switch ScreenClosing a Switch Screen Conﬁguration Tools Function Description Switch Conﬁguration ToolsConﬁguration Tools Function Description Working with Tables and FormsWorking with Edit Tables and Forms End Table Filter screen Filtering Table DataIs Less than Equals Does not Equal Sorting Table DataPrinting Data Monitoring PerformanceWorking with Polling Tables and Forms Exporting DataSelected graphing data Graph sub-types Graph Type Graph Sub-types Customizing the Asem DisplayAltering the Graph Display Graphing Table Bar GraphMIB Variable=Description Modifying Label AppearanceModifying or adding Well-known Protocols Modifying the list of well-known portsLocalization of Asem Altering the Default BrowserNative2ascii input file name output file name Changing the MIB Default ValuesEnd Index Index Index Page Users Guide