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This chapter describes how to manage PNNI address summaries, address reachability, and scope mapping for address advertisement.
Address summarization allows scalability across multiple networks by reducing the amount of addressing information that needs to be distributed. Using a single reachable address prefix to represent a collection of end stations and/or node addresses, each node advertises its table of reachable addresses into its peer group.
The Address Summary window allows you to perform the following tasks:
The Address Summary window contains information that identifies a selected node and shows the address prefixes that are summarized by the node to an upper level logical group node.
To display the summary addresses for a node, follow these steps:
Step 1 Display the PNNI topology by double-clicking a PNNI domain or peer group name in the AtmDirector main window.
Step 2 Select a node in the topology map.
Step 3 Select PNNI Options>Summary Addresses.
The Address Summary window opens (Figure 13-1). The address summary information for the selected node is displayed in the list of address prefixes. These fields are described in Table 13-1.
Step 4 Click OK when you have read the address summary information.
From the Address Summary window you can access a secondary window that allows you to modify the attributes of a summary address.
To modify a summary address advertised by a node, follow these steps:
Step 1 Display the PNNI topology by double-clicking a PNNI domain or peer group name in the AtmDirector main window.
Step 2 Select a node in the topology map.
Step 3 Select PNNI Options>Summary Addresses to display the Address Summary window (Figure 13-1).
Step 4 Select a summary address from the list to modify.
Step 5 Click Modify.
The Address Summary: Modify window opens (Figure 13-2).
Step 6 Make any desired changes to these attributes for this summary address:
Step 7 Click OK to accept your changes and close the window.
Step 8 Click Apply in the Address Summary window to apply your changes to the agent and close the window.
From the Address Summary window you can access a secondary window that allows you to add a summary address to those that are advertised by the selected node.
To add a summary address to be advertised by a node, follow these steps:
Step 1 Display the PNNI topology by double-clicking a PNNI domain or peer group name in the AtmDirector main window.
Step 2 Select a node in the topology map.
Step 3 Select PNNI Options>Summary Addresses to display the Address Summary window (Figure 13-1).
Step 4 Click Add.
The Address Summary: Add window opens. This window is identical to the one used for adding a summary address (Figure 13-2).
Step 5 Enter the address prefix for this summary address.
Step 6 Specify these attributes for this summary address:
Step 7 Click OK to add the new summary address and close the window.
A new row appears in the summary address list.
Step 8 Click Apply in the Address Summary window to apply your changes to the agent and close the window.
From the Address Summary window you can delete a summary address from the list of addresses advertised by a node.
To delete a summary address, follow these steps:
Step 1 Display the PNNI topology by double-clicking a PNNI domain or peer group name in the AtmDirector main window.
Step 2 Select a node in the topology map.
Step 3 Select PNNI Options>Summary Addresses to display the Address Summary window (Figure 13-1).
Step 4 Select a summary address in the table.
Step 5 Click Delete.
A confirmation message appears.
Step 6 Click OK to delete the summary address, or click Cancel to cancel the deletion.
Step 7 Click Apply in the Address Summary window to apply your changes to the agent and close the window.
Reachable address prefixes are the addresses that can be reached by any given node. Reachable addresses can be either of two types, summary addresses or foreign addresses. A foreign address is an address prefix associated with a node that does not match any of the summary addresses of the node. Reachable address information can be useful for monitoring or troubleshooting the connections from a node.
The Reachable Addresses window allows you to perform the following tasks related to reachable addresses:
The Reachable Addresses window includes information that identifies the selected node and displays a table of reachable prefixes with their attributes.
To display the reachable addresses from a particular node, follow these steps:
Step 1 Display the PNNI topology by double-clicking a PNNI domain or peer group name in the AtmDirector main window.
Step 2 Select a node in the topology map.
Step 3 Select PNNI Options>ATM Routes.
The Reachable Addresses window opens (Figure 13-3).
Step 4 Click the button to the right of the Advertising Node field to display the popup list of nodes that advertise for the selected node (PNNI Node) and select an advertising node.
The reachable address information for the selected node, filtered by the selected advertising node, is displayed in the reachable address table. These fields are described in Table 13-2.
Step 5 Click Close when you have read the reachable addresses.
From the Reachable Addresses window you can access a secondary window that allows you to modify the attributes of a reachable address.
To modify the attributes of a reachable address, follow these steps:
Step 1 Display the PNNI topology by double-clicking a PNNI domain or peer group name in the AtmDirector main window.
Step 2 Select a node in the topology map.
Step 3 Select PNNI Options>ATM Routes to display the Reachable Addresses window (Figure 13-3).
Step 4 Click the button to the right of the Advertising Node field to display the popup list of nodes that advertise for the selected node (Node Name) and select an advertising node.
The reachable address information for the selected node, filtered by the selected advertising node, is displayed in the reachable address table. These fields are described in Table 13-2.
Step 5 Select a reachable address from the table to modify.
Step 6 Click Modify.
The Reachable Address: Modify window opens (Figure 13-4)
Step 7 Make any changes to these attributes of this reachable address:
For descriptions of these fields, see Table 13-2.
Step 8 Click OK to accept your changes and close the window.
Step 9 Click Apply in the Reachable Addresses window to apply your changes to the agent and close the window.
From the Reachable Addresses window you can access a secondary window that allows you to add a reachable address and specify its attributes.
To add a reachable address to a node, follow these steps:
Step 1 Display the PNNI topology by double-clicking a PNNI domain or peer group name in the AtmDirector main window.
Step 2 Select a node in the topology map.
Step 3 Select PNNI Options>ATM Routes to display the Reachable Addresses window (Figure 13-3).
Step 4 Click the button to the right of the Advertising Node field to display the popup list of nodes that advertise for the selected node (Node Name) and select an advertising node to use for the reachable address you are adding.
The reachable address information for the selected node, filtered by the selected advertising node, is displayed in the reachable address table. These fields are described in Table 13-2.
Step 5 Click Add.
The Reachable Address: Add window opens. This window is identical to the one used to modify a reachable address (Figure 13-4).
Step 6 Enter a reachable address prefix in the Addr/Prefix field.
Step 7 Specify these attributes of this reachable address:
For descriptions of these fields, see Table 13-2.
Step 8 Click OK to accept your changes and close the window.
Step 9 Click Apply in the Reachable Addresses window to apply your changes to the agent and close the window.
From the Reachable Addresses window you can access a secondary window that allows you to delete a reachable address from a node.
To delete a reachable address from a node, follow these steps:
Step 1 Display the PNNI topology by double-clicking a PNNI domain or peer group name in the AtmDirector main window.
Step 2 Select a node in the topology map.
Step 3 Select PNNI Options>ATM Routes to display the Reachable Addresses window (Figure 13-3).
Step 4 Click the button to the right of the Advertising Node field to display the popup list of nodes that advertise for the selected node (Node Name) and select an advertising node.
The reachable address information for the selected node, filtered by the selected advertising node, is displayed in the reachable address table. These fields are described in Table 13-2.
Step 5 Select a reachable address from the table to delete.
Step 6 Click Delete.
A confirmation message appears.
Step 7 Click OK to delete the reachable address, or click Cancel to cancel the deletion.
Step 8 Click Apply in the Reachable Addresses window to apply your changes to the agent and close the window.
Both individual and group addresses have membership scopes, which are used to determine the scope of advertisement of reachable addresses. By configuring address scope, you can constrain advertised reachability information within configurable bounds. This allows flexibility in control of reachability information, in cases such as network restructuring or for security control.
The Scope Mapping window allows you to perform the following tasks related to address scoping:
The Scope Mapping window includes information that identifies the selected node and displays a table of UNI scope-PNNI level mappings.
To display the address scoping information for a node, follow these steps:
Step 1 Display the PNNI topology by double-clicking a PNNI domain or peer group name in the AtmDirector main window.
Step 2 Select a node in the topology map.
Step 3 Select PNNI Opions>Scope Mapping.
The Scope Mapping window opens (Figure 13-5). The information in this window is described in Table 13-3.
Step 4 Click Close when you have read the scope mappings.
| Field | Description |
|---|---|
| PNNI Node | Node name that is distributed to other nodes via PNNI flooding. The default node name is the host name of the switching system. |
| PNNI Level | Level of PNNI hierarchy at which this node exists. This value is used to determine the default node ID and the default peer group ID for this node. |
| Scope Mode | Mode used to map the organizational scope values of UNI interfaces to PNNI routing levels: manual or automatic. The default scope mode, automatic, ensures that all organizational scope values cover an area at least as wide as this node's peer group. See Table 13-4 for the default mappings |
| UNI and PNNI Scope Mapping | |
| UNI Level | Organizational scope values used at UNI interfaces. |
| PNNI Level | PNNI routing level for this UNI scope value. |
| UNI Scope | PNNI Level |
|---|---|
| 1-3 | 96 |
| 4-5 | 80 |
| 6-7 | 72 |
| 8-10 | 64 |
| 11-12 | 48 |
| 13-14 | 32 |
| 15 (global) | 0 |
From the Scope Mapping window you can modify the scope mapping of reachable addresses for a node.
To modifying address scope mapping, follow these steps:
Step 1 Display the PNNI topology by double-clicking a PNNI domain or peer group name in the AtmDirector main window.
Step 2 Select a node in the topology map.
Step 3 Select PNNI Options>Scope Mapping to display the Scope Mapping window (Figure 13-5).
Step 4 Select Manual from the Scope Mode field.
Step 5 Select the PNNI level to modify by clicking in a cell.
Step 6 Enter the new PNNI routing level to associate with the UNI level.
Repeat Step 5 and Step 6 for each scope mapping you want to modify.
Step 7 Click Apply to apply your changes and close the window.
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