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The Sub-network map depicts all the elements discovered in a particular network. The sub-network map is represented as a separate node in the tree which has sub-maps under them. For example, if a network 192.168.2.0 is discovered, a new node with the same IP is added in the tree. This map has sub-maps for each type of the device, such as Printers, Switches, Routers, etc. To learn the differences between IPnet map and Sub-network map, refer to Differentiating IPnet map and Sub-network maps.
When you open the Application Client, IPnet map is displayed, by default.
To view Sub-network Map
Log on to Application Client.
Click the sub-network map node on the tree. By default, the sub-network maps are denoted by their IP address in the tree.
The sub-network map is opened on the display panel.
In a sub-network map, the discovery progress icons provided near the Zoom Slider help you in obtaining the status of the discovery. The following are the various discovery progress representations.
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Icon |
Implies |
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The discovery of that network has been completed. |
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The discovery of that network has been disabled. |
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The discovery of that network is in progress. |
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The discovery of that network is yet to being. |
Viewing Number of Nodes discovered
In a map, the total number of nodes discovered is provided near the Zoom Slider. This helps you in obtaining the total number of the nodes discovered in the network.
Viewing Advanced Information of a Device
When a network is being discovered by Web NMS, different devices, such as Switches, Routers and Printers connected in a network are also discovered. In a network, information travels in the form of packets. The details as to how these packets travel through the network are presented as Advanced Device Information in Web NMS. The term Advanced Device Information includes the communication details of devices, such as Switches, Routers, etc., and also the inventory details of devices, such as Printers.
The Advanced Device Information of these managed devices is presented in a tabular form. The tabular information derived from the SNMP Agents associated with these devices is defined in the RFC 1213 MIB, Bridge-MIB, and the Printer MIB.
The tables that you can view for each of the devices are listed below:-
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Device |
Tables |
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SNMP Node/Routers |
Routing Table Interfaces TCP Table UDP Table IpNetMedia Table |
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Switches |
Interfaces Routing Table Port Table Spanning Tree Forwarding Table Filter Table |
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Printers |
Printer Device Table Cover Table Input Table Output Table Supplies Table Interfaces Routing Table |
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The procedure to view advanced information is the same for all the devices, such as SNMP nodes, Switches, Routers, and Printers. |
To view advanced information of a device
Select a device in the map. For example, a switch in the Switches map.
From the <device-specific> menu, choose <table>. [Note: The <table> denotes the table name as listed in the table above]. For example, Network Hub.
The respective table is displayed. Complete information on these tables and how to view information using these tables are provided in the MIB Browser > Table Handling topic in the Administrator Guide.
Tip: You can view advanced information of a device also from the Network Database view. For more information, refer to Traversing Network Database.
Performing Device-Specific Operations
The operations explained in this section are available only for certain types of devices, such as SNMP Nodes and Routers.
Tip: You can perform all these operations also from the Network Database view. For more information, refer to Traversing Network Database.
Ping option is used in networks to test and monitor the reachability/accessibility of a device in the network.
To ping a device
Select a device in the map.
From the <device-specific> menu, choose Ping or press Ctrl+P.
A Status Message dialog box with ping details is displayed.
The Trace Route option is used to view the path through which data traverses from Web NMS to a destined device in the network.
To trace the route
Select a device in the map.
From the <device-specific> menu, choose Trace Route.
A Status Message window with the trace route and number of hops a packet of information undergoes to reach the destined device is displayed.
Browse MIBs option is used to retrieve information on the type of MIBs that are loaded for an SNMP device.
To browse MIBs
Select an SNMP device in the map.
From the <device-specific> menu, choose click Browse MIBs.
The MIB Manager with the loaded MIBs is displayed in the display panel.
For complete information, refer to Monitoring Network Performance.
Telnet session can be opened to access a telnet-enabled device (i.e. a node) in the network.
To open a telnet session
Select a Node in the map.
From the Node menu, choose Telnet to device or right-click the node and choose Node > Telnet to device. The Telnet console is displayed for that node.
Enter the login ID and password to access the node.
To disconnect the telnet session, choose File > Disconnect; and to quit the console, choose File > Exit.
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