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This chapter provides information about the network topology application and describes how to display your network topology. You have two choices:
In any given network, a node can be identified by its name and IP address, both of which are expected to be unique. Although a node's name and IP address are unique, both can be changed using the command line interface, but these changes do not occur at the same time. Cisco WAN Manager release 9.2 provides a Topology Configurator which enables you to assign a unique node ID to all nodes in a network. The unique node ID is used to identify nodes in all the different database tables.
You can use the Topology Configurator to automatically assign a unique node identifier during discovery, or you can elect to assign all node identification information.
When you use CWM automatic unique node IDs, CWM assigns the identifier after discovery. which CWM assigns this unique identifier at discovery, after CWM is brought up after a cold start, or after the node is added to the network for the first time. The node IDs for all existing nodes are saved in the node table of the database. For all subsequent warm starts (where a database exists from the previous session), the nodes are assigned their previous IDs which were stored in the database.
Cisco WAN Manager stores the names of all nodes and their respective node IDs in a file called nodes.conf. This file is updated as topology messages are received from the network. When a message is received from a new node, CWM attempts to locate the node ID by comparing entries in the nodes.conf file. If the node is found, it is assigned the node ID specified in the nodes.conf file. Otherwise, a warning message is sent to the console indicating that the node has not yet been assigned an ID.
One of the main features of the Cisco MGX 8850 is its strong performance in a stand alone configuration. In a stand alone configuration, the Cisco MGX 8850 provides multi-service switching for voice, ATM. and Frame Relay networks without any routing peers.
When a new node is to be added to your network, you should add the node to Cisco WAN Manager using the Topology Configurator to ensure that CWM is aware of the node and to give it a unique node ID before adding the node to the network.
Only one CWM should be used at a time to add new nodes, modify existing node names, or delete node names. When these changes occur, the nodes.conf file is then copied to all other CWM stations. The new node should be added to the network only after the nodes.conf file has been updated and distributed to all other CWM stations.
You do not have to stop the CWM core processes to add a new node to the nodes.conf file. When CWM receives a new node that it does not find in it's cache, it will read the nodes.conf file, update the file with information about the new node, then copy the nodes.conf file to all other CWM stations, even those currently running CWM.
Auto route networks are discovered using link protocol. Before attempting auto route discovery, you must first specify all networks to be discovered in the /usr/users/svplus/config.sv file and add the Node ID for all gateway nodes specified in the config.sv file using the Topology Configurator
The config.sv file is stored in /usr/users/svplus directory. The config.sv file is written with default values during software installation and can have only one line containing 12 fields separated by a pipe ("|") delimiter. Following is an example of the contents of the config.sv file:
0|Network1|nmsbpx01|9600|0|7|6|0|30|256|9.2|nwip_on|
| Field | Name | Default Value | Meaning |
|---|---|---|---|
1 | SV+ Netid | 0 | Unique identifier for a network |
2 | Network Name | Network1 | Unique name for a network |
3 | SV+ Gateway Node Name/ Serial Port | /dev/ttya | Specify the device filename for the serial port used |
4 | Baud Rate Set | 9600 | Serial port speed; must match speed of control port at the node |
5 | Autodial Phone | 0 | Phone number to dial out including prefix, if needed; 0 if not dialing out. |
6 | SV_Timeout | 7 | Link timeout used by svmain (field must not be changed) |
7 | Retransmit | 6 | Link retry count used by svmain (field must not be changed) |
8 | DL_Throttle_TO | 0 | Download throttling timeout (field must not be changed) |
9 | DL_Ack_TO | 30 | Ack timeout for download (for configd) |
10 | DL_Blk_SIZE | 256 | Block size for download (for configd) |
11 | Switch Release | 9.2 | Switch release number |
12 | nwip_flag | nwip_on | Flag to indicate in band (nwip_on/nwip_off) or out of band (lan_ip) |
Add the Node ID for all gateway nodes specified in the config.sv file using the Topology Configurator. You can add the Node ID for other nodes later, perhaps while auto route discovery is taking place.
First add the nodes using the Topology Configurator. When you have finished adding nodes, click Apply, then Notify. Doing so forces the topology subsystem to read the nodes.conf file. All nodes for which a Node ID has been defined should display on the Topology map.
Stand alone MGX 8800 networks are discovered by Cisco WAN Manager. Before attempting stand alone route discovery, however, some configuration is required. You must add the Stand Alone MGX 8800 nodes using the Topology Configurator. Other nodes in the network can be added later, perhaps while auto route discovery is taking place.
First add the nodes using the Topology Configurator, then click Apply and Notify to force the topology subsystem to read the node.conf file. All nodes for which a Node ID has been defined will display on the Topology map.
The Unique Node ID feature allows users to define a unique Node ID for the nodes in all types of networks. Use the Topology Configurator to specify the Node ID for each node. When you have completed assigning the Node ID for all nodes, the Topology Configurator generates a nodes.conf file in /usr/users/svplus/config directory. You can then copy the nodes.conf file across multiple CWM stations.
To configure the Unique Node ID feature, complete the following steps.
Step 1 Generate a nodes.conf file by using the Topology Configurator.
Step 2 Copy the nodes.conf file across all CWM stations in the config directory (usually /usr/users/svplus/config).
Step 3 Perform a cold start of CWM.
To maintain unique Node IDs in your network, you must adhere to the following rules.
To display the CWM Network Topology window, start the CWM application, enter 3 (Start Desktop) at the Main Menu prompt and press the Return key, then click on the Topology button in the CWM Desktop window. (For a full description of starting CWM and the CWM Desktop, see Chapter 2 "Starting and Stopping Cisco WAN Manager".)
Two windows are displayed, the CWM Network Topology window and the Overview window. Both windows display your network's nodes and trunks.
The CWM Network Topology window is shown in Figure 3-1. You perform all menu options and map manipulations through this window. A minimal amount of user interaction is allowed through the CWM Network Topology window.
The Overview window provides a constant view of the entire topology at all times, regardless of the zoom/pan level in the CWM Network Topology window. This provides you a reference point as you pan around and zoom in or out in the CWM Network Topology window. A dotted rectangle in this window identifies the visible area of the CWM Network Topology window. When you click the mouse on this rectangle and drag it to a new location, the view in the CWM Network Topology window changes to show the region now enclosed within the rectangle. (In Figure 3-2, the rectangle surrounds the entire map, as the CWM Network Topology window is zoomed out to show the entire topology.)
The CWM topology application includes basic menu options, as well as options that are enabled when a node is selected. Other applications are the alarm indicators (sound and color) which provide timely indications of network status.
To select objects in the CWM Network Topology window, position the cursor over the object and click the left mouse button.
Alternatively, when you press the Shift key while dragging a selection rectangle around multiple nodes/trunks, all nodes and trunks within the rectangle are selected when you release the mouse button. (When you don't continue to press the Shift key, the drawn rectangle identifies a zoom region.)
To zoom in on a specific area of the CWM Network Topology window, drag a selection rectangle around it by holding the mouse button down and dragging the cursor. When you release the mouse button, the view zooms to fill the window with the selected area.
Zoom back out by selecting the View menu's Restore option, or by resizing the window.
You can also use the View menu's Zoom In and Zoom Out options. This performs the zoom operation by a constant factor of two.
To move a node within the CWM Network Topology window, select the node, then without releasing the mouse button, drag it to the desired location.
You can pan the topology view by using the window's scrollbars, or you can drag the Overview window's view rectangle around the Overview map. When you release the mouse button, the view in the CWM Network Topology window changes to display the region identified by the Overview rectangle.
Double-clicking on a node displays a submap, showing all components associated with the selected item, such as feeders of routing nodes. You can select a node or trunk in this submap to perform other operations appropriate to the type of object---add a comment to a trunk or administer a node, for example. Double-clicking on a group icon in the CWM Network Topology window displays the Group Node List window, which lists the member nodes.
When the line connecting two nodes in the CWM Network Topology window represents multiple trunks, the line appears thicker on the topology map. When you click on this thick line, a window is displayed with a list of individual trunk connections. Select the desired trunk to display a window allowing you to specify a trunk comment.
When you double-click on a routing trunk icon, the Display Trunk window is displayed. This window provides status and attribute information about the trunk. Select a row in the grid then click on the Comment button to add a comment (up to a maximum of 255 characters) about the trunk via the Trunk Comment window.
The following sections provide information about the topology window's menus. The menu descriptions are displayed in the same order as they appear (from left to right) in the CWM Network Topology window.
This section describes the options of the File Menu.
Select this option to save the current map configuration. The next time the topology is displayed, the saved configurations are used.
Select this option to print the current map. The defaults are to print a color image of the entire map. When you select the print option, the Print Dialog window is displayed as shown in Figure 3-3.
When printing a topology map, you have the following options.
Select this option to exit the CWM Network Topology window without shutting down the CWM processes. CWM continues to collect data even though the workstation screen is cleared of the CWM Network Topology and Overview windows.
Select this option to display a submenu with the following options:
Select this option to display a list of available maps. Select a map image, then click on the OK button to make the selected map the CWM Network Topology window's background image (displayed only when the Background selection on the Layer submenu is toggled on).
Select this option to zoom in on the current view by a factor of two.
Select this option to zoom out from the current view by a factor 1/2.
Select this option to restore the topology view to its unzoomed state (entire map is displayed).
You must first select the node(s) you want to add to a group. Select nodes by clicking on them in the CWM Network Topology window or drawing a selection rectangle around them (hold the Shift key and the mouse button down simultaneously while you drag the mouse) or press the Shift key while clicking on individual node(s).
With the node(s) selected, select this option to display the Group Add Node window. A list of existing groups are displayed (when any exist).
To create a new group with the currently selected nodes, specify a new name in the New Group Name field, then click on the Apply button.
To add the selected nodes to an existing group, select the group name from the list, then click on the Apply button.
Click on the Cancel button to close the window without taking any action.
To remove an individual node from a group, first select the group's icon in the CWM Network Topology window, then select this option. The Group Delete Node window displays a list of the selected group's nodes. Select one or more of the nodes, then click on the Apply button to remove them from the group.
Select a group or multiple groups by clicking on their icons or drawing a selection rectangle around them using the mouse. Then select this option to delete the groups from the CWM Network Topology window.
When a group is deleted, nodes of its members are displayed in their original locations in the CWM Network Topology window.
Select this option to display a submenu with the following options:
With a node selected in the CWM Network Topology window, select this option to display a submenu with the following options:
Select this option to display a submenu containing the following selection:
Select a node, then select this option to view the list of current software images available for that node. The images shown in the Image DownLoader window, shown in Figure 3-8, are available from the CWM hard disk.
Select an image from the displayed list, then click on the DownLoad button to load that image into the device.
Click on the Abort button to stop an in-progress download.
Click on the Close button to dismiss the window.
During node initialization, the node attempts to locate the correct version of software, firmware, or image from Flash EPROM. When the image is not located, the CWM workstation is then interrogated. Failure to find the image at the CWM workstation results in interrogation of other nodes on the network. When the system is unable to locate the image, you may need to download or restore the image. The SW/FW menu option enables software and firmware downloads and restoration of previous node configurations. Downloading commands are issued from the Node Administration window. Contact Cisco Customer Support for further information.
The CWM DownLoader simplifies the distribution of software and card firmware to nodes in the field. This is accomplished by providing download capability from a single point to an entire network.
You can download software from one of the following places:
To store a software release (image), you copy the IPX (NPC or PCC) or BPX 8600 series (BCC) software release from tape to the CWM workstation's hard disk.
Need MGX info **
A list of the stored software images can then be viewed from the CWM Network Topology window via the SW/FW option on the Software Mgmt menu. Images can then be loaded to system nodes by using commands at the Node Administration window.
Select this option to display a submenu with the following options:
See Chapter 15, "Saving and Restoring Node Configurations", for information about saving and restoring node configurations. See Appendix A, "Save and Restore Configuration Commands", for information about the commands used to save and restore node configurations.
Select this option to launch the configuration restoration program documented in Chapter 15, "Saving and Restoring Node Configurations". See Appendix A, "Save and Restore Configuration Commands", for information about the commands used to save and restore node configurations.
Select this option to display the Help on Color window. This window defines the meanings of the colors used in the CWM Network Topology window.
Select this option to display the Help on Icon window. This window identifies the icons used in the CWM Network Topology window (icons, including the line patterns identifying specific trunk types, are different in HP OpenView).
All 3810 devices connected to a particular routing node are grouped together in a cluster and shown on the topology by a single icon.
This icon is assigned a default name 3810Clust (<n>), where <n> represents the number of individual 3810s in the cluster. An IP address is not displayed for this icon.
The color of the cluster's icon shows the status of the individual device with the most severe alarm condition. For example, when four 3810s exist in a cluster and one of them is unreachable, while the other three are in a minor alarm state, the color of the cluster icon shows it to be unreachable. The alarm status of a trunk connecting either a 3810 cluster on the main map or a 3810 device on the submap is the same as that of the node. CWM does not receive a separate alarm status for the trunk. Therefore, when the cluster or individual device is unreachable, the trunk is shown with a major alarm.
Double-click on the 3810 cluster's icon to display a submap showing the individual 3810s connected to the parent routing node. An icon representing an individual 3810 in the submap displays the node's name and IP address.
To close the submap, select the submap File menu's Quit option. To administer a node, select it in the submap window, then select the Node option from the submap's Component menu, and then the Admin option from the subsequently displayed submenu.
You can select a node and drag it to a new location on the submap, however, this position is not saved even when you save the topology view.
Node status is not updated in a submap view once the window has been displayed. To check the current status of nodes, you must close and redisplay the submap.
To display your network topology using the a HP OpenView (HP OV) application, you must do the following:
From the other C-shell window:
Step 1 For example, from a C-shell window, invoke the HP OpenView application:
host% /opt/OV/bin/ovw
An About OpenView window is displayed. You can click on the Close button to dismiss this window, or you can wait for it to be dismissed when the OpenView Root window, shown in Figure 3-11, is displayed.
Step 2 Double-click on the StrataView Network icon to display the StrataView HPOV Network Topology and Panner: Network StrataView Topology windows. Both windows display your network's nodes and trunks.
Step 3 From the pull-down menus, you can launch all of the CWM features. Note, many menu items are disabled until an appropriate element is selected, for example, a node in the topology.
The StrataView HPOV Topology window is editable and all menu options, as well as map manipulations, are performed through this window. You click on the "home" icon to return to the Root window. You click on the "up-arrow" icon to return to the previously displayed StrataView HPOV Topology window.
The Panner window, provides a constant view of the entire topology at all times, regardless of the zoom/pan level in the StrataView HPOV Topology window. This provides you a reference point as you pan around and zoom in or out in the StrataView HPOV Topology window.
A minimal amount of user interaction is allowed through the StrataView HPOV Topology window. A dotted rectangle in the Panner window identifies the visible area of the StrataView HPOV Topology window. When you click the mouse on this rectangle and drag it to a new location, the view in the StrataView HPOV Topology window changes to show the region now enclosed within the rectangle.
The HP OpenView topology application includes basic menu options, as well as options that are enabled when a node is selected. Other applications are the alarm indicators (sound and color) which provide timely indications of network status.
To select objects in the StrataView HPOV Topology window, position the cursor over the object then click the left mouse button.
Alternatively, when you press the Shift key down while dragging a selection rectangle around multiple nodes/trunks, all nodes and trunks within the rectangle are selected when you release the mouse button. (When you don't continue to press the Shift key, the drawn rectangle identifies a zoom region.)
You can open, change the type, describe/modify, delete, and hide a device symbol by placing the cursor on a node/trunk icon, pressing the right mouse button, and then selecting the corresponding menu option. You can also add a description to the device, or modify a device's description from this menu.
You use the Panner window to zoom in on a specific area of the StrataView HPOV Topology window. You drag a selection rectangle around this window by holding the left mouse button down and dragging the cursor. When you release the left mouse button, the view zooms to fill the StrataView HPOV Topology window with the selected area in the Panner window.
You zoom back out by selecting a larger area in the Panner window with the selection rectangle.
To move a node within the StrataView HPOV Topology window, select the node, then without releasing the mouse button, drag it to the desired location.
You can pan the topology view by dragging the Panner window's view rectangle around the Panner map. When you release the mouse button, the view in the StrataView HPOV Topology window changes to display the region surrounded by the Panner rectangle.
Double-clicking on a node displays a submap, as shown in Figure 3-14, showing all components associated with the selected item, such as feeders of routing nodes. Note, the submap window can also be displayed by placing the cursor on a node and pressing the right mouse button.
You can select a node or trunk in this submap to perform other operations appropriate to the type of object---add a comment to a trunk or administer a node, for example. Double-clicking on a group icon in the StrataView HPOV Topology window displays the Group Node List window, which lists the member nodes.
When you double-click on a routing trunk icon, the Display Trunk window is displayed. This window provides status and attribute information about the trunk. Select a row in the grid then click on the Comment button to add a comment (up to a maximum of 255 characters) about the trunk via the Trunk Comment window.
The following subsections provide information about the StrataView HPOV Topology window's StrataView menu options. For information about the Map, Edit, Locate, View, Performance, Configuration, Fault, Misc, and Options menu's, see HP OpenView documentation.
The StrataView menu options are described in the same order as they appear (from top to bottom) when you click on the StrataView menu in the StrataView HPOV Topology window.
This subsection describes the options available through this menu.
Select this option to start the CWM Desktop application. The CWM Desktop window is displayed. See Section "The CWM Desktop Window" in Chapter 2, for detailed information about this application.
Select this option to start the CWM Connection Manager application. See Chapter 6, "Equipment Management" for detailed information about this application.
Select this option, with an AXIS device selected in the submap window, to start a resync process. Status of the resync process is displayed in a Node Resync window.
Select a node, then select this option to view the list of current software images available for that node. The images shown in the Image DownLoader window are available from the CWM hard disk.
Select an image from the displayed list, then click on the DownLoad button to load that image into the device.
Click on the Abort button to stop an in progress download.
Click on the Close button to dismiss the Image DownLoader window.
Select this option to display the Display Shelves window. This window displays a list of all feeders for the selected node. This window can also be displayed by placing the cursor on a node and clicking the right mouse button.
Select this option to display the status of a physical line. You must first select a line icon, prior to selecting this option. The Display Physical Line Status window, shown in Figure 3-17, is displayed.
You must first select the node(s) you want to add to the new group, prior to selecting this option. You select nodes by clicking on them in the StrataView HPOV Topology window or drawing a selection rectangle around them (hold the Shift key and the mouse button down simultaneously while you drag the mouse) or press the Control key while clicking on individual node(s).
The selected nodes are removed from the StrataView HPOV Topology window and a group icon is added to the New Object Holding Area pane in the Panner window. when you subsequently double-click on the group icon in the Panner window, the group icon is moved to the New Object Holding Area in the StrataView HPOV Topology window. You can then move the group icon to a desired location in the StrataView HPOV Topology window.
To view the components of a group, double-click on the group's icon. The member nodes are displayed in the New Object Holding Area in the StrataView HPOV Topology window.
Select this option to add node(s) to a group. You must select the group icon to which you want to add the node(s), then select the node icon(s) prior to selecting this option. You select icons by clicking on them in the StrataView HPOV Topology window or drawing a selection rectangle around them (hold the Shift key and the mouse button down simultaneously while you drag the mouse) or press the Control key while clicking on individual node(s).
Select a group or multiple groups by clicking on their icons or drawing a selection rectangle around them using the mouse, then select this option to remove the group(s) from the StrataView HPOV Topology window. When a group is deleted, its member nodes are displayed in their original locations in the StrataView HPOV Topology window.
Select this option to remove an individual node from a group. You must select the desired group icon in the StrataView HPOV Topology window, prior to selecting this menu option. The Group Delete Node window displays a list of the selected group's nodes. Select one or more of the nodes, then click on the Apply button to remove them from the group.
Select this option to remove a DAS/DNS station from the StrataView HPOV Topology window. You must select the DAS/DNS station's icon prior to selecting this menu option.
Select this option to open a terminal window and start a Telnet session to the selected node. The commands acceptable in this window are documented in the WAN Switching Command Reference Manual. This window can also be displayed by placing the cursor on a node and pressing the right mouse button. A popup menu is displayed with the Admin option.
Select this option to obtain the status of the selected D-channel. You must select the D-channel's icon prior to selecting this menu option.
Select this option to obtain the status of the selected SPNNI-channel. You must select the SPNNI-channel's icon prior to selecting this menu option.
Select this option to display a submenu with the following selections:
See Chapter 15, "Saving and Restoring Node Configurations", for information about saving and restoring node configurations. See Appendix A, "Save and Restore Configuration Commands", for information about the commands used to save and restore node configurations.
Select this option to launch the configuration restoration program documented in Chapter 15, "Saving and Restoring Node Configurations". See Appendix A, "Save and Restore Configuration Commands", for information about the commands used to save and restore node configurations.
Select this option to display the Display Upgrade Status window. This window displays the current upgrade state of all the routing nodes in all networks.
Posted: Wed Mar 31 15:41:46 PST 1999
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