Interpreting Discovery Table Data
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The Recent Activity, License Management, Problems, and Recently Unreachable tables organize information in the following columns:
E (Exists, Discovered) | The listed IP address exists in the network. All devices receive status and the last timestamp, which displays when NetMRI first discovered the address. |
P (Port Scanned) | If NetMRI is configured to use fingerprinting, device fingerprint status is listed in this column. |
R (Reached) | Shows whether NetMRI has sent a packet to the device and received a reply, establishing that the device is reachable. Devices are typically tested for reachability through SNMP and the CLI, usually with an ICMP Ping operation. |
S (SNMP Credentials) | Indicates the status of the SNMP credential guessing process. |
SC (SNMP Collection) | Shows the status of SNMP data collection for the device. Success indicates that a device successfully allows data collection through SNMP. If this is not successful, check the S field to see whether the correct credential is given. |
C (CLI Credentials) | Displays the status of the CLI credential guessing process. |
CC (Config Collection) | Indicates whether a device supports command-line connectivity and whether the configuration collection is successful. If this is not successful, check the C field to see whether the correct credential is given. |
G (Groups) | Shows the status of the device group generation process. Success indicates that a device has been assigned to at least one group. |
DB (Discovery Blackout) | Indicates whether or not the selected device is in a Discovery Blackout period. Two states are possible, In Blackout and Not in Blackout. |
CB (Change Blackout) | Indicates whether or not the selected device is in a Change Blackout period. Two states are possible, In Blackout and Not in Blackout. |
License Status | Licensed devices are listed as such. Unlicensed devices are non-network devices or devices for which NetMRI license limits have been exceeded. Unmanaged devices are those which NetMRI will discover, but not manage. |
Type | Lists the device type as determined by NetMRI. |
Last Timestamp | Date and time the data in the device records were updated, or verified as unchanged. |
Last Action | The last action performed by NetMRI on the device after discovery takes place. For example, Device Groups: Successfully assigned to device groups indicates that the device was successfully discovered and added to a device group. |
Last Seen | The date and time when the device was last seen on the network. For example, reading the IP address in the ARP table from a router. |
First Seen | Date and time when the listed device was first detected by the NetMRI appliance. |
To display an explanatory tooltip, hover over the E, P, R, S, SC, C, CC, and G column headings.
The following status icons appear in the tables:
Icon | Name | Description |
|---|---|---|
| OK | The device passed the process. |
 | Error | The device failed the process. |
Not Applicable | The process is not applicable to the device. | |
Skipped | The device skipped the process. | |
Running | The process is in progress. |
A pink row in the table indicates that there is at least one failed process for the device.
To see the action that generated a status, along with the timestamp and source of the action, hover over a status icon.
Each of the column categories provides a reason or an explanation of how a discovery phenomenon took place upon each device. Consider the E (Exists, Discovered) column, for example. Possible explanations for why a device was found to exist in the network include the following:
Exists (Discovered): Device exists / Source: SNMP | Exists (Discovered): Device exists / Source: NIOS |
Exists (Discovered): Device exists / Source: Net-SNMP | Exists (Discovered): Device exists / Source: NetMRI |
Exists (Discovered): Device exists / Source: CIDR Table | Exists (Discovered): Device exists / Source: Seed |
Exists (Discovered): Device exists / Source: CDP | Exists (Discovered): Device exists / Source: Wireless Controller |
Exists (Discovered): Device exists / Source: Route Table | Exists (Discovered): Device exists / Source: IP Phone |
Exists (Discovered): Device exists / Source: ARP Table | Exists (Discovered): Device exists / Source: Call Server |
Exists (Discovered): Device exists / Source: Path | Exists (Discovered): Device exists / Source: VPN Table |
Exists (Discovered): Device exists / Source: CDP Table | Exists (Discovered): Device exists / Source: Wireless AP |
Exists (Discovered): Device exists / Source: LLDP | Exists (Discovered): Device exists / Source: Subnet Scan |
Exists (Discovered): Device exists / Source: HSRP | Exists (Discovered): Device exists / Source: Discover Now |
Exists (Discovered): Device exists / Source: VRRP |
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To expand all IP addresses of a device and the corresponding interfaces to which they are assigned, click the arrow to the left of the IP address of the device.
Three status icons appear in the Recent Activity, License Management, Problems, and Recently Unreachable tables:
OK: The device passed the process.
Error: The device failed the process.
Not Applicable: The processes are not applicable to the device.
Skipped: The device skipped the process.
Running: The process is in progress.
Some guidelines for the Recent Activity, License Management, Problems, and Recently Unreachable tables:
Hover over a status icon to see the action (with a timestamp) that generated the status.
A pink row indicates that there is at least one failed process for the device.
Click the arrow to the left of the IP address to list other IP addresses on the device, and the corresponding interface to which it is assigned (if known).
The area at the bottom of the Discovery tab provides a progress bar and summary data:
Network Devices: The number of discovered devices.
Licensed Devices: The number of discovered licensed devices.
Classified: The number of IP addresses the appliance has fully discovered with SNMP collection and assigned to a device group.
Reached: The number of IP addresses NetMRI has touched.
Identified: The number of IP addresses known to exist on the network.
Sometimes a device may be discovered by more than one collector. In that case, a deduplication procedure occurs, and the device is marked with a special icon in the UI. For more information, see Deduplication of Devices Discovered by Multiple Collectors.