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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
"Configuring Dynamic Interfaces" on page 511.
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" on page 560 in "Configuring Dynamic Interfaces" on page 511.
Bulk Configuration of VC Ranges
When you create a static ATM 1483 subinterface, you must configure a permanent virtual
circuit (PVC), also known as a virtual circuit (VC). The ATM protocol requires one or more
VCs over which data traffic is transmitted to higher layers in the protocol stack.
Similarly, dynamic creation of ATM 1483 subinterfaces requires you to configure a range
of ATM PVCs on the ATM AAL5 interface and assign a name to this range. Each VC range
consists of one or more nonoverlapping VC subranges. A VC subrange is a group of VCs
that resides within the virtual path identifier (VPI) and virtual circuit identifier (VCI) ranges
you specify.
The process of configuring a VC range for a dynamic ATM 1483 subinterface is referred
to as bulk configuration. You create a bulk configuration by issuing the atm bulk-config
command. For example, the following commands create an ATM 1483 bulk configuration
named myBulkConfig on the specified ATM AAL5 interface.
host1(config)#interface atm 2/0
host1(config-if)#atm bulk-config myBulkConfig vc-range 0 3 101 1100
vc-range 4 7 201 700
Chapter 18: Configuring Dynamic Interfaces Using Bulk Configuration
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