20-24
ATM Switch Router Software Configuration Guide
OL-7396-01
Chapter 20
Configuring Frame Relay to ATM Interworking Port Adapter Interfaces
Configuring Frame Relay to ATM Virtual Connections
Characteristics and Types of Virtual Connections
The characteristics of the Frame Relay to ATM interworking VC, established when the VC is created,
include the following:
•
Frame Relay to ATM interworking parameters
•
Committed information rate (CIR), committed burst size (Bc), excess burst size (Be), peak
information rate (PIR) (that is, access rate [AR]) for Frame Relay
•
Peak and average transmission rates for ATM
•
Service category
•
Cell sequencing integrity
•
ATM adaption Layer 5 (AAL5) for terminating interworking PVC
These switching features can be turned off with the interface configuration commands.
Note
For information about ATM VCCs, see
Chapter 7, “Configuring Virtual Connections.”
Note
You can configure a maximum of 2000 virtual connections on a CDS3 or CE1 Frame Relay port adapter.
Table 20-4
lists the types of supported virtual connections.
Configuring Frame Relay PVC Connections
This section describes configuring Frame Relay to ATM interworking permanent virtual channels (PVC)
connections.
You can configure the following Frame Relay PVC connections:
•
Configuration Guidelines
•
Configuring Frame Relay to ATM Network Interworking PVCs
•
Configuring Frame Relay to ATM Service Interworking PVCs
•
Configuring Terminating Frame Relay to ATM Service Interworking PVCs
•
Configuring Frame Relay Transit PVCs
Table 20-4 Supported Frame Relay to ATM Virtual Connection Types
Connection
Point-to-Point
Point-to-Multipoint
Transit
Terminate
Permanent virtual channel
3
–
3
3
Soft permanent virtual channel
3
–
3
–