The Discovery Settings page enables you to customize the selected network discovery. The settings configured on this page distinguish the selected discovery from others that you previously configured. The following settings are configured on this page:
Provide a name for the selected discovery to distinguish it from other discovery configurations you may use to discover other areas of your network. The default Name displays the user who first configured the selected discovery with the date and time of first configuration.
Provide a short description of the selected discovery. This Description displays next to the Name in the Network Discovery view. Information provided here can help you further distinguish the type of discovery you are configuring.
The SNMP Timeout is the amount of time Orion waits for a device to respond to an SNMP request for object information. If a device takes longer than the SNMP Timeout to respond to an SNMP request from your Orion server, the SNMP request is counted as one SNMP try. SolarWinds recommends setting the SNMP Timeout to be a little more than double the amount of time it takes for a packet to traverse the longest route between devices on your network.
If you are encountering numerous SNMP timeouts during Network Discovery, increase the value for this setting. Though increasing the SNMP Timeout will increase the amount of time it takes to complete any given network discovery, it could increase the probability of discovering older or slower interfaces on some devices.
The Search Timeout is the how long your product waits for a device to respond to an ICMP request. ICMP requests, also known as pings, attempt to determine if a given IP address has a network device assigned to it.
If the Ignore nodes that only respond to ICMP (ping) option is selected, SNMP is used instead of ICMP to locate network devices.
The value of the SNMP Retries setting determines the number of times to retry any failed SNMP request, where a failed SNMP request is defined as any SNMP request that does not receive a response within the SNMP Timeout defined above.
If Hop Count is set to a number greater than zero, additional devices connected to discovered devices are included. Each such connection counts as a hop.
For example, consider a network discovery configured to search within the IP address range starting at
x.y.z.0 and ending at
x.y.z.50. The discovery finds a device at
x.y.z.20 that is also connected to a device at
a.b.c.45. If the Hop Count for this discovery is 1 or greater, the device at
a.b.c.45 is included in the discovery results, even though
a.b.c.45 is not within the IP address range specified for the discovery.
The Discovery Timeout is the amount of time allowed to complete a network discovery. If a discovery takes longer than the Discovery Timeout, the discovery process is terminated.