Overview

Creating the INTERSPAN View

Using AutoConfigure

The Network Map Display

Viewing Status Information
(SNMP Trap Handling)

SNMP Queries



Overview

The AutoConfigure feature allows the network manager to easily generate the topology of the INTERSPAN Virtual Private Network (VPN). AutoConfigure uses SNMP to retrieve a customer's topology from the InterSpan CNMS database. This information is then used to generate a network map and several sub-views that logically separate the INTERSPAN network components and provide the manager with a clear view of the INTERSPAN VPN.

This chapter provides information about the following topics:



Creating the INTERSPAN View

Before you can use the AutoConfigure feature, you must first create the INTERSPAN network view which is represented by a cloud icon. To create the network view, follow these steps:

1. From SunNet Manager, select Edit.

The Edit pull down menu appears, as shown in Figure 3-1.

Figure 3-1. Edit Menu

1. From the Edit menu, select Create.

The Create Object window appears, as shown in Figure 3-2.

2. From the Create Object menu, select View.

By default, the Type list highlights INTERSPAN.

Figure 3-2. Create Object Window

4. Click on the Create button.

The New view. INTERSPAN window appears, as shown in Figure 3-3.

Figure 3-3. New View. INTERSPAN Window

5. Enter data into this screen, as shown in the following table:


Field Name Description
Name: Enter ATT-InterSpan.
This must be entered exactly as shown above.
This is a required field.
Description: Enter the name or description of the network.
This is an optional field.
ATT CNM Server: Enter cnmsrv or the server's IP address.
This is a required field.
SNMP RdCommunity: Enter public!FRP!customer name.
Replace customer name with the community name
assigned to you, for example,
public!FRP!lpp. This is a required field.
SNMP WrCommunity: This field is not currently used and should be left
blank.


6. The remainder of the fields in the screen should be populated by checking off the supported MIBs for which you are provisioned.

7. Define the cloud color by selecting the shade of red, green, or blue. This seletion is optional.

8. Click on the Apply button.

The ATT-INTERSPAN cloud appears on your screen, as shown in Figure 3-4.

Figure 3-4. ATT-INTERSPAN Network Cloud




Using AutoConfigure

Once you have created the network cloud, you can select the AutoConfigure option. AutoConfigure allows you to generate the topology of the INTERSPAN Virtual Private Network (VPN).

To use AutoConfigure, follow these steps:

1. From the SunNet Manager bar, select Tools.

The Tools pull down menu appears.

2. From the Tools pull down menu, select INTERSPAN.

The copyright screen appears, as shown in Figure 3-5.

Figure 3-5. Copyright Screen

3. Click on OK.

The INTERSPAN menu appears, as shown in Figure 3-6.

Figure 3-6. INTERSPAN Menu

4. Select AutoConfigure from the INTERSPAN pull down menu.

Network managers can choose to execute the AutoConfigure feature at any time. If the retrieved topology from CNMS is the same as the topology in the SunNet Manager database, AutoConfigure will not take any action. If elements not found in the SunNet Manager database are detected in the CNMS database, then these elements will be added to both the SunNet Manager database and the topology map. In doing so, the location and other properties of existing elements in the SunNet Manager database are preserved.



Displaying the Network Map

To view the current INTERSPAN topology, double-click on the INTERSPAN cloud icon. The network map appears, which is similar to the one shown in Figure 3-7. The network map is described in greater detail in the next section.

NOTE:

If AutoConfigure was not performed, a blank screen is displayed with an error message.

Figure 3-7. INTERSPAN Network Topology Map



The Network Map Display

All INTERSPAN network elements are given unique names by the AutoConfigure process. The unique naming convention avoids conflict with other elements in the network map. This section explains the naming and graphical conventions used in the map. This section also explains how to view specific links.

Ports

INTERSPAN Frame Relay inter-corporate ports that are not part of the customer's network are depicted by a triangle. Ports that are customer-owned are depicted by a circle.

Port names are based on the name of the city where the port is located and its port index. For example, a port in Atlanta might be named Atlanta.14028, where 14028 is the port index number.

Data Link Connection Identifiers (DLCIs)

Each PVC is identified by a Data Link Connection Identifier (DLCI) at each port; the icon used to denote a DLCI is a square. A DLCI is identified by its port name followed by its DLCI index. For example, a DLCI at Altanta.14028 would be denoted as Atlanta.14028.105, where 105 is the DLCI index.

The INTERSPAN Network Manager creates the naming convention described earlier in order to display elements in the network topology. The port and DLCI names are used only with the INTERSPAN Network Manager graphical interface.

Once you have displayed a network topology, you can double-click on a link to display a subview. The subview shows the PVC represented by that link.

The subview of a connection represents the end points of an actual connection. For example, in the case of a PVC, the two DLCIs that comprise the virtual connection are displayed, as shown in Figure 3-8.

Figure 3-8. Data Link Connection Identifiers (DLCIs)

Rearranging Ports and DLCIs on the Screen

Ports and DLCIs can be rearranged on the screen by clicking on them and dragging them to new positions. This improves the readability and allows for the logical clustering of ports.



Viewing Status Information
(SNMP Trap Handling)

The status of each port and PVC is displayed on the network view so that users can see what is in-service and what is out-of-service. As SNMP messages containing status changes are received, these changes are displayed and logged in $INMHOME /log/inm.trap and the network view is updated.

The status of each customer-owned INTERSPAN Frame Relay port is displayed on the network map. Ports that are in-service are displayed in green while ports that are out-of-service are displayed in red. Inter-corporate ports are always shown in green because their status is not available.

The status of a single PVC is displayed in the Link Level view of the customer network. A PVC that is in-service is shown in green; if it is out-of-service, it is shown in red.

When a port (or PVC) goes out-of-service, an SNMP trap message is generated by the INTERSPAN Frame Relay network and then forwarded to the INTERSPAN Network Manager. This message is displayed in a window, similar to the one shown in Figure 3-9.

Figure 3-9. INTERSPAN Trap Handler Window

By selecting OK, the window can be cleared from the screen. In addition, the color of the port in the network map (or the PVC in a link level view) changes to red and the trap message is added to the inm.trap file in the log directory.

When a port (or PVC) returns to service, an SNMP trap message is again generated by the INTERSPAN Frame Relay network and then forwarded to the INTERSPAN Network Manager. This message is displayed in a window and the color of the port in the network map changes to green. All trap messages are logged in the inm.trap file residing in the log subdirectory.



SNMP Queries

The SNMP query capability, provided by SunNet Manager, allows users to select objects (such as ports or DLCIs) from a network view and retrieve MIB variables that are associated with that object. Access to each MIB requires that the corresponding schema file be installed and the customer subscribe to the associated CNM service feature. The INTERSPAN Network Manager application provides the INTERSPAN Frame Relay MIB and schema files.





Retrieving Network MIB Variables

To retrieve MIB variables associated with the network as a whole, perform the following steps:

1. Select Goto from the SunNet Manager tool bar.

The Goto menu appears.

2. Select Home from the pulldown menu.

The INTERSPAN Network Manager cloud appears.

3. Click on the INTERSPAN cloud.

The color of the icon changes to black indicating that it has been selected.

4. Press the right mouse button.

A menu containing QuickDump and SendRequest options appears. At this point you can select QuickDump or SendRequest to retrieve the Frame Relay tables. Figure 3-9 shows an example of the Frame Relay tables available through SendRequest. (For information on these commands, refer to the SunNet Manager User's Guide).

Figure 3-10. Send Request Options Menu



Retrieving Port MIB Variables

To retrieve MIB variables associated with a port, perform the following steps:

1. Select Goto from the SunNet Manager tool bar.

The Goto menu appears.

2. Select ATT-INTERSPAN

The network topology map appears.

3. Click on a port from the network map.

4. Press the right mouse button.

A menu containing QuickDump and SendRequest options appears. At this point you can select QuickDump or SendRequest to retrieve the Frame Relay tables. Figure 3-9 is an example of the Frame Relay tables available through SendRequest. (For information on these commands, refer to the SunNet Manager User's Guide).



Retrieving DLCI MIB Variables

To retrieve MIB variables associated with an individual DLCI, perform the following steps:

1. Select Goto from the SunNet Manager tool bar.

The Goto menu appears.

2. Select ATT-INTERSPAN.

The network topology map appears.

3. Double-click on a connection from the network map.

The DLCIs appear.

4. Click on a DLCI from the link level menu.

5. Press the right mouse button. A menu containing QuickDump and SendRequest options appears. At this point you can select QuickDump or SendRequest to retrieve the Frame Relay tables. Figure 3-9 is an example of the Frame Relay tables available through SendRequest. (For information on these commands, refer to the SunNet Manager User's Guide).



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