Beta Draft Confidential
17-521/19/05 ATM Services Configuration Guide for CBX 3500, CBX 500, GX 550, and B-STDX 9000
Configuring SVC Parameters
Configuring SVC Port Prefixes
Defining Default Routes for Network-to-Network Connections
For ports being used for network-to-network connections, you can define a default
route (which is automatically assigned 0x00 as its address, with a length of 0 bits).
If the network receives a call and the calling party address does not match any port
prefixes or addresses, it routes the call to the port on which the default route is defined.
If more than one port has a default route defined, then the administrative cost value is
used to determine the port to which the call is routed.
You can define multiple default routes within a node or network. The default route
typically applies to network-to-network logical ports (Interim Inter-switch Signaling
Protocol [IISP] or public UNI DTE).
Figure 17-26. Add SVC Port Prefix: Default Route
To define a default route:
1. Follow step 1 through step 4 beginning on page 17-41.
2. In the Format field, select Default Route from the pull-down list.
Note – It is important that you define a port address for calling/called party addresses.
Admin cost is not always the criteria for routing a call, because the call can be placed
out of the same interface on which it was received.
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