Ipswitch WhatsUp Gold User Guide - Ipswitch Documentation Server

Ipswitch WhatsUp Gold User Guide
Troubleshooting an SNMP connection
Important: The SNMP Trap Listener must be enabled to collect data for the SNMP Trap Log.
To enable the WhatsUp Gold SNMP Trap Listener, the Microsoft SNMP Trap Listener must be
disabled. Also, be sure to open SNMP port 162 for incoming SNMP traps.
If you receive invalid values when attempting to monitor the IfOperStatus OID from a
device running Vista, download Microsoft's hotfix 935876
(http://support.microsoft.com/kb/935876) to solve the problem.
If you experience connection problems with a specific device, ensure that the device
has SNMP enabled. Also ensure that SNMP port 161 is open on the device you are
attempting to monitor.
If you get what looks like a "stair-step" in your CPU and Process Utilization graphs, this
is caused by Microsoft's 60-second polling interval. Increasing WhatsUp Gold's polling
interval could help compensate for the lengthy Microsoft polling interval.
Similarly, if you experience delays and/or unexpected, weird spikes in your graphs, try
increasing the polling interval.
Re-enabling the Telnet protocol handler
The Telnet protocol handler is disabled by default in Microsoft Internet Explorer 7. In order to
use the Telnet tool in WhatsUp Gold, you need to re-enable the Telnet protocol.
To re-enable the Telnet protocol:
1 Click Start > Run. The Run dialog box opens.
2 In the Open box, enter: Regedit, then click OK. The Registry Editor opens.
3 Go to the following key:
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Internet
Explorer\Main\FeatureControl
4 Under the HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Internet
Explorer\Main\FeatureControl, create a new key named
FEATURE_DISABLE_TELNET_PROTOCOL.
5 Add a DWORD value named iexplore.exe and set the value to 0 (decimal).
6 Close the Registry Editor and restart Microsoft Internet Explorer. The Telnet protocol is
enabled.
Passive Monitor payload limitation
Passive monitors have a payload limitation of 3 KB for WMI, SNMP, and Syslog Passive
Monitors.
958