Ipswitch WhatsUp Gold User Guide - Ipswitch Documentation Server

Ipswitch WhatsUp Gold User Guide
The SNMP agent software on a device listens on port 161 for requests from an SNMP
application. The SNMP agent and application communicate using User Datagram Protocol
(UDP). Trap messages, which are unsolicited messages from a device, are sent to port 162.
Note: If an SNMP application makes a request for information about a device but an SNMP
agent is not enabled on the device, the UDP packets are discarded.
Using a custom name for SNMP device interfaces
This feature lets you rename SNMP device interfaces to help you manage network interfaces
more efficiently and intuitively. Without this feature you must reference device interface
names, on a router for example, by their default names. Often, the device interface names are
not intuitive and it is difficult to determine the specific interface you are selecting when
setting up an interface utilization monitor for performance monitors and active monitors.
This feature also helps you easily select the interface you want to view in interface utilization
logs and other applicable dashboard reports and split second graphs.
Configuring a custom name (ifAlias) for an SNMP device interface
In order to configure a custom name (IfAlias) for a device's SNMP interface, you need to
access the device configuration console and rename each interface according to your naming
convention preference.
After the interface(s) are renamed, you can add them as performance monitors and active
monitors. You can also select the custom interface in various dashboard reports and split
second graphs. If the device interface(s) already have performance monitors and/or active
monitors set up, the new interface name displays in WhatsUp Gold accordingly.
Use the following example instructions for how to change a Cisco router interface name. If
you have other devices, refer to the device documentation for instructions on how to change
interface names.
To configure a device custom name for an SNMP interface on a Cisco router:
Open the Cisco Command Line Interface (CLI) and enter the following commands:
905