Discovery Manager

Discovery Options

There are two concurrent discovery queues.

• High Priority Queue - For devices in the high priority discovery queue, SevOne NMS first discovers the device that was most recently queued with the high priority followed by the other devices in the high priority queue in the last in first out sequence.

• Low Priority Queue - For devices in the low priority discovery queue, SevOne NMS first discovers the device that has been in the low priority queue the longest in the first in first out sequence.

There are two discovery processes.

• Manual Discovery - The Manual Discovery process runs every two minutes to discover objects such as interfaces, CPUs, and their indicators on the devices you manually mark for discovery on the Device Manager. Typically the Manual Discovery process runs in the high priority queue but you can choose to decrease the Manual Discovery process to the low priority queue.

• Automatic Discovery - The Automatic Discovery process runs as you schedule it to occur on the Cluster Manager Peer Settings tab to discover interfaces, CPUs, etc. on all devices in SevOne NMS even if you do not mark the device for discovery. Automatic Discovery runs in the low priority discovery queue.

Manage Discovery

The Discovery Queue tab displays the following information. Click Cancel All or select the check box for each device on which to stop discovery and click Cancel Selected to stop discovery.

• Device Name - Displays the device name.

• Queue - Displays Low for the low discovery queue or displays High for the high discovery queue.

• Start Time - Displays the time the discovery process started.

• Peer – Displays the name of the peer that performs the discovery and polls the device.

• Core - Displays the identification of the core discovery process. A core discovery process spawns multiple discovery threads. Threads with the same Core ID are created by the same process.

• Thread - Displays the identification of the thread that is currently performing the discovery action. A thread only discovers one device and then the thread is destroyed.

• CPU % - Displays the percentage of CPU usage when the device is discovered.

• Mem % - Displays the percentage of memory that the discovery action consumes. Discoveries with abnormally high memory usage may indicate a problem with the polled device. The discovery thread terminates when it consumes too much memory.

Manage Subnets

The Watched Subnets tab enables you to create any number of subnet blocks and IP address ranges to scan your network on a regular schedule for items that can be pinged.

• Click Cancel Scan to cancel all scans that are currently in progress or select the check box for specific subnets and click Cancel Scan.

• Click Scan Now to start a scan of all subnets or select the check box for specific subnets and click Scan Now.

Perform the following steps to add a subnet.

1. Click Add Subnet to display the Add Subnet pop-up.

2. In the Subnet Name field, enter the name of the subnet block or IP address range.

3. Click the Peer drop-down and select the peer that is to send out the ping commands to the network segment.

4. Click the Action drop-down.

   • Select Add Device to add everything that is able to be pinged to the Device Manager for object discovery and data polling.

   • Select Add Candidate to display everything that is able to be pinged on the Candidates tab where you can select specific candidates to add to the Device Manager for object discovery and data polling. No metrics are collected from candidates.

5. Select the Check SNMP check box to validate that the device/candidate is enable to send SNMP data to SevOne NMS.

6. Click Schedule field to display the Scan Time pop-up. If you do not schedule the subnet, the scan occurs only when you click Scan Now.

   1. Click the Days tabs to scan the network on the dates that appear with a darker shade. Click Weekends to scan on weekends and/or click Weekdays to scan on weekdays.

   2. Click the Start Time drop-down and select the time to start the scan.

   3. Click the Time Zone drop-down and select a time zone.

   4. Click Add to add the scan time to the Selected list.

   5. Repeat these steps to add additional scan times. Each scan time must be unique.

   6. Click Save to save the scan times.

7. To create an IP address range, select the IP Address Range option and perform the following steps.

   1. In the Start IP Address field, enter the low end of the IP address range.

   2. In the End IP Address field, enter the high end of the IP address range.

8. To create a subnet block, select the Subnet Block option and perform the following steps.

   1. In the IP Address field, enter an IP address.

   2. In the Subnet Mask field, enter a subnet mask.

9. Select the Create Device Group for Subnet check box to create a device group for the devices you add to SevOne NMS as a result of the scan for the subnet.

10. Click Add to add the block or range to the list to watch.

11. Repeat the previous steps to create additional ranges.

12. If you do not schedule the subnet to scan on a regular basis, select the check box for the subnet and click Scan Now. If you schedule the subnet to scan on a regular basis the subnet is scanned on the schedule you define until you remove the subnet.

Candidates List Filters

Perform the following steps to filter the candidates that display in the list.

1. Select the check box for each candidate to manage, click , and select the following options.

   • Select Block to prevent the candidate from being added as device to SevOne NMS.

   • Select Unblock to enable users to add the candidate as a device to SevOne NMS.

   • Select Remove to remove the candidate/device from the list. The candidate/device can reappear in the list the next time a scheduled scan occurs.

2. Click Hide Added to remove the devices SevOne NMS currently monitors and polls from the display or click Show Added to display the devices that are in SevOne NMS in the list.

3. Click Hide Blocked to remove the candidates you block from the list or click Show Blocked to display the candidates you block in the list.

4. Select the check box for each candidate you want to add to SevOne NMS and click Add Devices to add the candidate as a device to SevOne NMS. When the device is in SevOne NMS, its objects are discovered and metrics are polled for reports and alerts. When the Status column displays In SevOne NMS you cannot re-add the device.

Add a Candidate

Perform the following steps to add a new candidate to the list.

1. Click Add Candidate to display the Add Candidate pop-up.

2. In the IP Address field, enter the IP address of the candidate.

3. In the Candidate Name field, enter the name of the candidate.

4. Click the Peer drop-down and select the peer to scan for the candidate and to monitor the candidate if you add the candidate to SevOne NMS as a device.

5. Click the SNMP Version drop-down and select the SNMP version the candidate uses.

   • For SNMPv1 and SNMPv2, in the SNMP Read Community String field, enter the SNMP read community string for SevOne NMS to use to monitor the candidate should you choose to add the candidate as a device.

   • For SNMPv3, perform the following steps.

     1. In the SNMP Username field, enter the user name SevOne NMS needs to authenticate onto the device.

     2. Click the SNMP Authentication Type drop-down.

        • Select None (usmNoAuthProtocol) to not use an authentication method to send or receive messages.

        • Select MD5 (usmHMACMD5AuthProtocol) to use MD5 authentication protocol for messages.

        • Select SHA (usmHMACSHAAuthProtocol) to use SHA authentication protocol for messages.

     3. If you select MD5 or SHA in the previous step, in the SNMP Password field, enter the password SevOne NMS needs to authenticate onto the device.

     4. Click the SNMP Encryption Type drop-down.

        • Select None to not use encryption to send or receive messages.

        • Select AES to use the Advanced Encryption Standard encryption method.

        • Select DES to use the Data Encryption Standard encryption method.

     5. If you select AES or DES in the previous step, in the SNMP Encryption Key field, enter the localized key the authentication protocol on the device requires to authenticate messages.

6. Click Save.

Import Multiple Candidates

You can use any spreadsheet application to create a .csv format file with the information described below. You must complete all required fields and you can leave the optional fields blank (delimited by a comma). If SevOne NMS can ping the candidates, they appear on the Candidates tab.

1. Click Import CSV to display a pop-up.

2. Enter the following fields or copy the following from the .csv file.
   
   SNMPv1 and SNMPv2
   Name, IP Address, Description, 1st Level Device Group/Device Group1,1st Level Device Group / Device Group2, 1st Level Device Group/Device Group3, 1st Level Device Group/Device Group4, SNMP Ver, SNMP Port, SNMP RO, SNMP RW, Poll Frequency, Time Zone, Peer
   
   SNMPv3
   Name, IP Address, Description, 1st Level Device Group/Device Group1, 1st Level Device Group/ Device Group2, 1st Level Device Group/Device Group3, 1st Level Device Group/Device Group4, SNMP Ver, SNMP Port, SNMP Username, SNMP Password, Authentication Type, Encryption Type, Encryption Key, SNMP RO, SNMP RW, Poll Frequency, Time Zone, Peer
   The fields in the file are:

   • Name - (Required) This can be a FQDN, a common name, or the IP address for the device (SevOne recommends that you do not use the IP address for the device name).

   • IP Address - (Required) Enter an IP address for the device. If the device name is DNS resolvable, this does not have to be the device's actual IP address because the default settings on the Cluster Manager Cluster Settings tab enable SevOne NMS to update this to the appropriate IP address upon first discovery.

   • Description - (Optional) Users can search for devices by device description.

   • Group 1, Group 2, Group 3, Group 4 - (Optional) Enter up to four device group names. You define device groups on the Device Groups page. If you have not defined device groups yet, you can leave these blank. The .csv file enables you to associate a device with up to four device groups. Use the / (slash) as the delimiter between the upper level device groups down to the device group level into which to add the device and use the , (comma) as the delimiter between each group name field (1^st Level Group/2^nd Level Group, Type/Router, Location/Delaware, Manufacturer/Cisco).

     Hint: The lower section of the Device CSV Importer provides a Group drop-down to display the list of your device groups for reference purposes.

   • SNMP Ver - (Required if you want to use SNMP performance trending) Enter the SNMP version number 1, 2, or 3.

   • SNMP Port - (Optional) Enter the SNMP port number on the device from which SevOne NMS is to collect SNMP data. Leave this blank to default to port 161.

   • SNMP Username - (Required for SNMPv3 only) Enter the user name SevOne NMS needs to authenticate onto the device.

   • SNMP Password - (Required for SNMPv3 only) Enter the password SevOne NMS needs to authenticate onto the device.

   • Authentication Type - (Required for SNMPv3 only) Enter one of the following: None, MD5, or SHA.

   • Encryption Type - (Required for SNMPv3 only) If you enter either MD5 or SHA for the Authentication Type, enter one of the following: None, AES, or DES.

   • Encryption Key - (Required for SNMPv3 only) If you enter either AES or DES for the Encryption Type, enter the encryption key SevOne NMS needs to authenticate onto the device.

   • SNMP RO - (Required if the device uses a string that is different from the strings on the Cluster Manager) Enter the SNMP read only string.

   • SNMP RW - (Required if the device uses a string that is different from the strings on the Cluster Manager) Enter the SNMP read write string.

   • Poll Frequency - (Optional) Enter the polling frequency. Leave this blank to default to a five minute poll frequency.

   • Time Zone - (Optional) Enter the time zone of the physical location of the device. Leave blank to use the time zone from the Cluster Manager Cluster Settings tab. For thresholds and work hours calculation, you should enter the device time zone.

     Hint: The lower section of the Device CSV Importer provides a Time Zone drop-down to display the list of time zones that you make available on the Cluster Manager Cluster Settings tab for reference purposes.

   • Peer - (Optional) When you have a multi-peer SevOne NMS cluster and you want to specify the peer to discover and poll the device, enter the name of the peer. If you leave this blank in a multi-peer cluster, the peer on which you run the Device CSV Importer discovers and polls the device. Leave this blank in a single peer cluster.

     Hint: The lower section of the Device CSV Importer provides a Peer drop-down to display the list of peers for reference purposes.

3. Click Save.

4. A message appears below the text field to display the success or failure of the import. If an error occurs during the import, the message describes the error and the offending lines display. All devices that do not have errors display on the Candidates tab. Fix all errors in the import file and repeat the steps.

Notes List Filters

You must select a device and click Apply Filter to display notes because your network creates many device notes. After you select a device, all other filters are optional and cumulative.

The Filters section enables you to define the notes to appear in the list. If a device has more than 3500 notes that meet your filter criteria, notes download to a file that you can view in an .html format.

• Click the Device drop-down and select a device to display notes for a specific device. You must select a device to display notes in the list.

• Click the Severities drop-down and select each severity level for which to display notes. The default Cluster Manager Cluster Settings tab creates discovery notes for all severities except the Debug level.

• Click the Time Span drop-down and select a time span to display notes for the time span you select.

• Click the Time Zone drop-down and select a time zone for the time span.

• Select the Display notes added by users check box to display notes users add for the device.

• Select the Display notes added by discovery check box to display notes discovery creates.

• Select the Display object configuration changes created during discovery check box to display notes the object generates that pertain to configuration changes that occur during discovery.

Manage Notes

You can export the list of device notes to an .html format or to a .csv format.

• Click Export HTML to export the notes to an .html file. When there are more than 3500 notes that meet your filter criteria, notes download even if you do not click this.

• Click Export CSV to export the notes to a .csv file.

Perform the following steps to add a note. Notes you add have the Notice severity level.

1. Click Add Note to display the Add Note pop-up.

2. Enter the note text.

3. Click Save.