NetMRI discovery depends on a collection of under-the-hood features to ensure that polling and addition of devices in the network proceed smoothly and accurately. This chapter describes the three following critical tasks.
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SNMP and/or CLI Credentials can be specified within the Device Viewer for individual devices. Should such a credential not work for a given device, or if command-line access is lost for a given device, NetMRI will always re-guess credentials from the global credential list, including vendor defaults if available. See the sections Adding and Testing SNMP Credentials for a Device and Adding and Testing CLI Credentials for a Device for more information. |
The Device Viewer offers dedicated CLI Credentials and SNMP Credentials pages (Settings icon –> Setup –> CLI Credentials and Settings icon –> Setup –> SNMP Credentials) to globally manage and test CLI and SNMP credentials. See About SNMP Credentials, About CLI Credentials, and Credential Import Formats for further details about credential definition.
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Doing so enables you to delete all selected records from the table. Exercise caution when performing this action, as you may unintentionally delete rows of data that you did not wish to select.
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The Device Viewer allows you to enter login credentials for a device in the network and test them. The device must already be recognized in NetMRI through discovery. Credentials can be specified for SNMP and for CLI.
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The lower panel is a history that lists all credentials attempted during the last credential guessing attempt for the given device. This data resets each time credentials are guessed for a device. The table indicates the time of each guess and the result of that attempt. If a device is manually configured with a credential, NetMRI updates the history once it attempts to use that credential for data collection.
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To establish CLI device credentials at the device level, complete the following:
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Configuring IPAM Sync
This section describes the following:
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- Network sync: Newly-imported subnets are imported as “managed”.
- If the imported subnet conflicts with an existing subnet, it is not accepted. The imported subnet can go into a container as long as there is no conflict.
- If the subnet already exists, no changes are made.
- If the subnet is in IPAM but not in NetMRI, it is left in IPAM.
- IP address sync: New IP addresses are added and marked as “unmanaged”. If an IP address already exists, the field values is overwritten during the import.
- Before NetMRI 7.1.4 and NIOS 8.1, if the IP address exists in IPAM but it is not in the import file, it is left in IPAM.
- As of NetMRI 7.1.4 and NIOS 8.1, if the IP address exists in IPAM but it is not in the import file, its discovered data is cleared out. You can control the time that the IP address stays in the NetMRI database after it is no longer discovered under NetMRI. To do so, go to Setup -> General Settings -> Advanced Settings.
Viewing IPAM Sync Discovered Data in NetMRI and NIOS
In NIOS, you can view the data discovered by NetMRI and synchronized using IPAM Sync as follows:
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NetMRI automatically supports an Infoblox utility, Cisco Discovery Service, that enables network administrators to provide Cisco-validated reporting and analysis. NetMRI operates as a Cisco Discovery Service-enabled system supporting discovery of network systems for analysis and management. You can use the CDS Integration Tool as part of a new NetMRI installation, or use the tool to extract further insight and value from an existing deployment. Cisco Gold Partner status is required for effective use of the software utility.
NetMRI supports CDS API version 2.0 and uses a NetMRI device or virtual machine to inspect all aspects of a network's Cisco infrastructure to collect the following information:
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