Cisco Systems 8600 Series manual Virtual Circuit Features, User Commands

Functional Description

User Commands

The following user commands are associated with diagnostics changes:

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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.

Frame Relay to ATM Network and Service Interworking 12-15