ATM Base Profile Overview

To configure a dynamic ATM 1483 subinterface over a static ATM AAL5 interface, you must create a base profile. The base profile includes one or more of the following attributes for the ATM 1483 subinterface, listed alphabetically:

You can override the base profile assignment for a single ATM PVC that exists within a bulk-configured VC subrange with a profile that includes debugging attributes. This feature is useful for troubleshooting problems with the ATM 1483 dynamic subinterface columns created on the specified PVC. For more information, see Overriding ATM 1483 Base Profile Assignments Overview.

This topic describes the following:

Nested Profile Assignments Overview

The configuration for each dynamic upper-interface encapsulation type might differ, depending on the column type built by the router. To manage these differences, you can include one or more nested profile assignments within the ATM 1483 base profile. A nested profile assignment references another profile that configures attributes for a dynamic upper-interface encapsulation type. You can create different profiles for each upper-interface encapsulation type, or you can create a single profile that includes attributes for multiple encapsulation types.

For example, the following commands create a base profile named atm1483BaseProfile with two nested profile assignments. The first nested profile assignment references an IP profile named atm1483ProfileIp, and the second nested profile assignment references a PPP profile named atm1483ProfilePpp.

host1(config)#profile atm1483BaseProfile host1(config-profile)#atm atm1483 profile ip atm1483ProfileIp host1(config-profile)#atm atm1483 profile ppp atm1483ProfilePpp

In this example, atm1483ProfileIp and atm1483ProfilePpp have different IP configurations depending on the dynamic interface column constructed. For an IP over ATM (IPoA) dynamic interface column, the router uses the IP attributes in atm1483ProfileIp. For an IP over PPP over ATM dynamic interface column, the router uses the IP attributes in atm1483ProfilePpp.

The concepts that apply to profiles created for upper-interface encapsulation types configured over static ATM 1483 subinterfaces also apply to profiles created for upper-interface encapsulation configured over dynamic ATM 1483 subinterfaces. For information about creating profiles for upper-interface encapsulation types, see Creating a Profile for Dynamic Interfaces.

Additional Profile Characteristics for Upper Interfaces

In addition to ATM 1483 attributes and nested profile assignments, the base profile for a dynamic ATM 1483 subinterface can also include individual characteristics for several upper-interface encapsulation types, provided that no nested profile assignment for the specified encapsulation type is in the base profile. If, on the other hand, a nested profile assignment for this encapsulation type exists in the base profile, the router obtains all characteristics for that encapsulation type from the nested profile and not from the base profile.

For lists of the characteristics for each supported upper-interface encapsulation type, see Profile Characteristics.

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