Setup Guide
either disable all such traps or use only a single correct community string for each device that issues a trap.
Note: If another network management system is used in the same network with Network Discovery, this other system may generate alarms due to these traps.
Directed Community Strings
If a device is programmed with a directed community string (sometimes known as a direct access list), it will reject the attempt by Network Discovery to SNMP QUERY it, even if Network Discovery has been given the correct community string. With a directed community string, each device checks not only the “password,” but also to see if the Peregrine appliance is on the list of “trusted” devices.
You can allow Network Discovery to communicate with a device with a directed community string, but you cannot do so merely by configuring Network Discovery. You must also give the device itself an entry for a directed community string associated with the IP address of the Peregrine appliance.
Deleting a community string
You can delete a single community string, or you can delete an entire Community Property Group of community strings. Be sure you know which procedure you want to perform.
You cannot delete an entire Community Property Group if an IPv4 range is using it.
To delete a single community string
1Click Administration > Network Configuration > Community Property Groups > Modify a community property group.
2Select a Community Property Group from the
3Click Select.
4Under the “Delete a Community String” heading, select the community string you want to delete and click Submit.
More on community strings 119
