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All Device Viewer windows provide a special Device Actions icon at the top. Click this icon for a menu offering useful tools for viewing related information about the chosen device.
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To check the license status of any device (whether the device shown in the Device Viewer counts against the license limits for the NetMRI appliance), go to the Device Support page (Device Viewer –> > Settings & Status –> > Device Support). |
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You can define individual devices' SNMP and CLI credentials in the Device Viewer. For more information, see Adding and Testing SNMP Credentials for a Device and Adding and Testing CLI Credentials for a Device. |
The Device Viewer's Issues page (Device Viewer –> > Network Analysis –> > Issues) lists issues associated with the selected device in the network.
The Detected Changes chart provides an adjustable view of Issue issue trends for the current device. The time period resides on the horizontal X-axis, and the measurement, in the number of issues, is on the vertical Y-axis. Click the Time Selector drop-down menu to change the X-axis time period for the Historic chart.
The Detected Changes chart displays up to the following four data sets: Adds, indicating the quantity number of new Issues issues for each time period, Same, indicating Issues the time period that remain from the preceding time period; Cleared, indicating Issues issues that have been cleared from the system due to administrative remediation or other causes; and Suppressed, which shows the relative quantity of Issues that have been suppressed due to admin configuration of Issues that may be deemed to produce excessive notifications in each time period. Issue counts for each time increment appear as stacked bars in the chart. Move the mouse over any colored bar section to view the count for that Issue type.
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The Policy Compliance page (Device Viewer –> > Network Analysis –> > Policy Compliance) lists policies run against the device , and the outcomes of those policies. If no policies execute against the device during the time period set by the Date/Period drop-down menu in the Policy Compliance title bar, the page is blank.
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The Device Viewer's Device/Network Explorer section (Device Viewer –> > Device/Network Explorer) shows a substantial body of critical information about a selected device relative to other network elements. Device/Network Explorer conveys many details about the relative location of the device in the network, and aspects of its operating state. The "location" of the device is described by its SNMP identity, with many other pieces of information about the network switch, router, or other entity.
Before device identification, NetMRI verifies SNMP, Telnet, and SSH ports by access to these ports during normal operation. Any device that supports the tcpConnState SNMP table and is accessible are is polled for additional open TCP ports.
Active
To enable active port scanning can be enabled at , click the Settings icon –> > Setup –> > Collection and Groups –> > Global tab.
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Additional information can be displayed using the Columns option available via column header menusTo display or hide columns in the table, click a column header menu, select Columns in the drop-down menu, and then select the columns you want to display in the table. |
To enter new custom data for the device currently shown in the Device Viewer, complete the following:
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The Identification page (Device Viewer –>> Device/Network Explorer –>> Device Identification) displays identification information — gathered from a variety of collectors — for the device currently displayed in the Device Viewer. This page lists the identification discovery sources used to determine the device (normally SNMP), a listing of the discovered SNMP Data, and the operating system. Identification information is used to initially determine the type of device being accessed. Since identification information from different sources (listed in the Identification Discovery Sources table) is sometimes conflicting or incorrect, it is possible that a device type or name will initially be incorrect. Over time, as more detailed data is gathered from the device, the device type and/or name are corrected.
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The Device Location page (Device Viewer –>> Device/Network Explorer –>> Device Location) shows the location of a selected device relative to other network elements. Connectivity information is listed across Switchport, Subnet, Network Views, and VLAN tabs. Device Location shows all switch ports adjacent to the selected device where applicable, the subnetworks to which the device connects (in the Subnets tab) and VLANs (in the VLANs tab) containing the device.
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The Component Inventory page (Device Viewer –>> Device/Network Explorer –>> Component Inventory) lists all hardware information for the device, if SNMP data is available. Specific data depends on the vendor platform, and may include hardware revision, firmware revision, model number, and serial number. The page lists all installed interfaces and the chassis for the device. The chassis listing also provides the network device’s serial number and model number. Additional information can be displayed using the Columns option available via column header menus To display or hide columns in the table, click a column header menu, select Columns in the drop-down menu, and then select the columns you want to display in the table.
Viewing Open Services on a Device
The Open Services page (Device Viewer –>> Device/Network Explorer –>> Open Services) lists all TCP and UDP ports that are currently open on the device. This feature not only gives you a picture of what the selected device is doing – but it can also give you a quick view of possible security holes in the device’s basic configuration. Based on the device type, NetMRI will expect certain services to be configured on the device, and those values will appear in the Expected Service column as the protocol name. Devices will often show services such as telnet, BootP, or SNMP as a service. Services that are detected as being actively used on the device appear in the Verified Service column.
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The CDP Neighbors page (Device Viewer –> > Device/Network Explorer –> > CDP Neighbors) lists information from any Cisco devices that support and transmit announcements from the proprietary data-link-layer Cisco Discovery Protocol (CDP). The table lists all remote devices that have exchanged information with the current device using CDP announcements, including the local interface ID receiving CDP announcements, the neighbor's IP address, the neighboring device's DNS name and interface ID, the reported neighbor's "platform", which is the model of the CDP-supporting switch or router, and the Neighbor Capabilities, which indicates the basic functions of each CDP-neighboring device.
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The LLDP Neighbors page (Device Viewer –> > Device/Network Explorer –> > LLDP Neighbors) supports all devices running the LLDP protocol. The table lists all remote devices that are LLDP neighbors of the current device, listed against all local interfaces that report LLDP neighbors, and provides collected information regarding those devices from LLDP, including their identity, capabilities, and their own respective neighbors.
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The Neighbors page (Device Viewer –> > Device/Network Explorer –> > Neighbors) lists devices that NetMRI determines to be adjacent to the device at Level 2. This feature does not describe neighboring devices at Level 3.
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The Custom Data page (Device Viewer –> > Device/Network Explorer –> > Custom Data) displays any configured custom data fields that are used to provide additional information for user visibility in the Device Viewer. Custom data fields are represented by new columns that can be selected for display in a table.
Custom data also appears in tables available in on the Network Explorer –> > Inventory page. Define To define custom data in , click the Settings icon –> > General Settings –> > Custom Fields page.
See Defining and Using Custom Fields and Verifying Field Content In Device Viewer & Interface Viewer for more information on the use of custom fields in the Device Viewer.
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The Switch Port Management feature set makes heavy use of the Interface Viewer for checking interface configurations and status. The information in on the Device Viewer –> > Interfaces page, discussed in this section, is only a subset of the information available in the Interface Viewer. |
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The Interfaces section (Device Viewer –> > Interfaces) provides a survey of key discovered data for all interfaces of the chosen networking device. Each interface link in the table provides a shortcut menu with several useful port management features as follows:
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The Device Viewer –> > Interfaces –>> Configuration page lists all the interfaces supported by the device and their basic port configurations. By default, the table lists the VRF Name for the interface (if any), the configured speed, administrative state, duplex settings, admin state, and operational state, and the timestamp for the last configuration change. Additional information can be displayed using the Columns option available via column header menus.
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Viewing the Device’s Address Table
The Device Viewer –>> Interfaces –>> Address Table page lists the ARP table records captured by NetMRI during device discovery and polling. ARP tables consist of the IP addresses and MAC addresses assigned to the interfaces supported by the device. Effectively, this page shows the ARP table for the selected router or switch device. It also shows the VRF Name for each interface (if any). If the device is running IPv6, the records from the device’s Neighbor Discovery Protocol processes are shown.
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The Device Viewer –> > Interfaces –> > Performance page shows performance statistics, including utilization rates, error rates, and broadcast levels for each of the interfaces supported by the device. You can also access performance charts for any interface on the chosen device. The table also lists each interface's VRF membership, where applicable.
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You can check licensing status for NetMRI–managed firewall devices in the Device Viewer. The License page (Device Viewer –> > Firewall –> > License) applies only to Firewall devices and the information provided is derived from the vendor license information for the device itself (e.g. licensing purchased from Cisco), not for any licensing in NetMRI.
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The Router section (Device Viewer –> > Router section) provides protocol and connectivity information for the router or switch/router currently displayed in the Device Viewer, including the complete routing table, information on any dynamic routing protocols the device is running, ARP (IPv4) and Neighbor Discovery records (IPv6). All tables in this category apply for devices supporting both IPv4 and IPv6.
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NetMRI divides Ethernet switch information into a separate Switch section (Device Viewer –> > Switch) to provide discrete information for the switch currently shown in the Device Viewer.
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The device viewer's viewer VLANs page (Device Viewer –> > Switch –> > VLANs) provides a summary table for all of the VLANs provisioned in the selected switch.
The Active VLANs (Device Viewer –> > Switch –> > VLANs –> > Active VLANs) table provides some important information for checking the switch's VLAN configuration and its status in the network.
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The VLAN Configuration table (Device Viewer –> > Switch –> > VLANs –> > VLAN Configuration) lists configuration information for each VLAN supported by the device. Configuration settings for each VLAN include the three key STP timers Hello Time, Max Age and Fwd Delay for both the local bridge (on each VLAN, these are called Current values) and its root bridge (called Bridge values). For the current switch's VLANs, the Current Hello Time shows the time intervals between the transmission of configuration bridge PDUs (BPDUs), which flow outward from the root bridge as notifications of its root status to the other switches in the spanning tree.
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The VLAN Trunks page (Device Viewer –> > Switch –> > VLAN Trunks) presents all ports on the current switch that have 802.1Q or VTP configured in some way, whether the protocol in operation or is simply enabled. The complete list of interfaces in the current switch device appears, showing both the Dynamic State (on, off, or auto) and the Dynamic Status of each port (trunking or notTrunking). Should a port be set as a VLAN trunk, its Dynamic Status will show trunking. The VLAN Trunks page also lists links for each Peer switch and Peer Interface.
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The VLAN Changes page (Device Viewer –> > Switch –> > VLAN Changes) presents a zoomable bar chart reflecting the frequency of VLAN topology changes in the network. You can perform basic troubleshooting of problems in the spanning tree network, as VLAN changes usually occur as a result of topology changes in the network, as for example when a switch port goes down and the spanning tree has to reconverge around a different set of designated ports. To display the history for a specific VLAN, open the VLAN list (in the header), then click the VLAN name. Clicking a bar object in the chart displays the event log describing the change.
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The Port Config page (Device Viewer –> > Switch –> > Port Config) lists all the ports on the chosen switch, the VLAN provisioned for each port, and basic information such as the port state, the Port Fast state, and the administrative and operational state of each switch port (Up or Down). Non-normal data appears in red. The port state can show one of five different values, as follows:
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The Wireless section (Device Viewer –> > Wireless section) prov
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After a device is discovered by NetMRI, its detected Name, Device Type (Switch, Router, Switch-Router, etc...), or its management IP address can be edited by hand in this section. Doing so will remove the device from auto-discovery. To re-enable auto-discovery for that device, go to the Network Explorer –> > Discovery page and delete the device from the table. NetMRI will then re-discover the device after its defined time period between Discovery passes elapses. |
The Device Viewer provides a General Settings page (Device Viewer –>> Settings & Status –> > General Settings) in which you can perform the following:
- Enable/disable SNMP data gathering for the device.
- Under SNMP Status, select Enabled to enable SNMP collection for the current device, and select Disabled to disable SNMP collection.
- Enable SNMP debugging as a troubleshooting aid.
- Under SNMP Debug, select Enabled to enable SNMP debugging for the device. For more information, see Collecting Troubleshooting Data.
- Override the device Name and Type determined automatically by the appliance. This triggers rediscovery. For more information, see Overriding Device Names and Types in the Device Viewer.
- Override the config change setting specified in the Device Group to define config collection for the device as Locked or Unlocked.
- Set the Reboot Time, in YYYY-mm-dd hh:mm:ss format, for devices up longer than 497 days.
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The Device Group Settings section lists the settings for the highest-ranking device group that includes the device as a member, and a number of scanning and discovery-related statuses specific to the device, including the following:
- SNMP Collection: Whether SNMP collection is enabled or disabled.
- Port Scanning: Whether TCP/UDP port scanning is enabled or disabled.
- Finger Printing: Whether finger printing fingerprinting is enabled or disabled.
- NetBIOS Scanning: Whether NetBIOS Name scanning is enabled or disabled.
- ARP Cache Refresh: Whether ARP cache refresh is enabled or disabled.
- Config Collection: Whether configuration file collection is enabled or disabled.
- CCS Collection: Whether CCS scripting data collection is enabled or disabled.
- Vendor Default Collection: Whether vendor default SNMP credentials collection is enabled or disabled.
- Analysis: Whether the device allows analysis functions from NetMRI.
- Config Change: Whether configuration file editing is enabled or disabled.
- Switch Port Mgmt: Whether Switch Port Manager is enabled or disabled for the device.
- Privileged Polling: Whether CLI polling in privileged exec (enable) mode is enabled or disabled for the device.
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- For VRF-aware devices, you can change the Management IP address for the device by choosing it from the Management Address dropdown menu. The menu lists all IP addresses for the device, each shown with their associated network view and the collector by which the device was discovered. By default, the current management IP for the device is selected in the list. The listed management IPs fall within the discovery ranges of the Collector appliance or standalone appliance that manages the device. You can change the management collector for the device by selecting the IP address on the required collector. For more information, see Manually Changing Management Collector.
By choosing a different Management Address, the associated NetMRI appliance uses the scan interface on which the Management IP is defined. This feature is useful for devices that participate in multiple network views, as it enables the administrator to define which network view the device is managed through. In many cases, the Management Address list shows only a single network view such as the default Network 1. In these cases, all available addresses exist only in the single network view.
- For VRF-ignorant devices, this page shows a Management Network View drop-down menu. The list shows all network views for the device's associated Collector or standalone NetMRI appliance, that each has an assigned scan interface. You may see multiple network views. In cases of this type, possible route-leaking may be taking place from other VRF-aware devices that makes it possible for the current device to be managed from within two or more VRFs; though the device is VRF-ignorant, you can choose the network for which you consider the device to be a member for management purposes.
- If the NetMRI appliance manages only one network, the Management Network View drop-down will not appear.
- When the selected device in the Device Viewer is configured to allow only one of its interfaces as its management address, the Management Address drop-down will not appear. Therefore, it is possible for a device to show neither menu , or to show both.
SysAdmin users can also change a device management IP using the change_device_management_ip API call. For example: your_NetMRI_URI/api/docs#change_device_management_ip. For more information, refer to the online NetMRI API documentation.
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If the SNMP community string cannot be determined, enter it in the RO Community field as described above, or add it in the Settings icon –> > Setup –> > Credentials page. |
To specify the SNMP version understood by the device, choose the correct SNMP Version option, and then click Update Device.
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- Open the Device Viewer and go to then click Settings & Status –> > General Settings.
- Set the SNMP Debug option to Enabled, then and then click the Update Device button.
- Allow NetMRI to run for a time (typically an hour or two) specified by Infoblox Technical Support.
- As directed, send the SNMP log to Infoblox for analysis.
- Set the SNMP Debug option to Disabled, and then click the Update button.
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The Management Status page (Device Viewer –> > Settings & Status –> > Management Status) displays the same visual indicators as shown for the device in the Network Explorer –> > Discovery page. Each discovery indicator shows a related status message.
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The Logs page (Device Viewer –> > Settings & Status –> > Logs) displays logs documenting interactions NetMRI has had with the device.
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You can verify data collection activity in the Device Viewer. The Device Support page (Device Viewer –> > Settings & Status –> > Device Support) contains three tabs:
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