Frame Relay to ATM Network and Service Interworking 12-15
Functional Description
User Commands
The following user commands are associated with diagnostics changes:
• addloclp
• addrmtlp
• cnftstparm
• dellp
• dspalms
• dspcd
• dspcds
• tstdly
Virtual Circuit Features
The following virtual circuit features are supported by the ASI-1:
• Connection Groups
Connection groups are supported for ASI-1 ATM and interworking connection types, allowing
termination of up to 5000 (grouped) virtual circuits per BPX switch. The connection grouping
feature currently available on frame relay connections is expanded to include ASI-1 ATM and
interworking connections.
• FGCRA
Frame-Based Generic Cell Rate Algorithm is an ASI-1 firmware feature that controls admission
of cells to the network. It is configurable on a per-connection basis. It is a Cisco WAN switching
enhancement of the ATM-UNI standard Generic Cell Rate Algorithm. System software allows
configuration of FGCRA on a per-connection basis.
• IBS
Initial Burst Size is an ATM bandwidth parameter that is used by firmware to allow short initial
bursts, similar to the Cmax mechanism on the IPX switch. It is configurable on a per-connection
basis
• Full VPI/VCI addressing range
The entire range of VPI and VCI on both UNI and NNI interfaces is supported. For ATM-UNI,
8 bits of VPI and 16 bits of VCI are supported. For ATM-NNI, 12 bits of VPI and 16 bits of VCI
are supported. In either case, VPC connections only pass through the lower 12 bits of the VCI
field.
• Connection Classes
ATM and interworking connection classes are defined with appropriate bandwidth parameter
defaults. These classes only apply at addcon time. They are templates to ease the user’s task of
configuring the large number of bandwidth parameters that exist per connection.
