Frame Relay Transmission - ADC AVIDIA SWD4573I1 User Manual

Frame Relay Transmission

The following illustration shows an example of a configured PVC, including the specific VPI
and VCI values associated with each segment of the connection.
Subscriber VPI/VCI values
are obtained from
ADSL access provider
VCI-100
Megabit Modem
700F
600F
500L
Ports are mapped
to same VPI/VCI
ATM PVCs can also be set up to run bridging, routing or brouting sessions. See
Bridging and Routing Sessions" on page 228
Bridging and Routing Sessions" on page 486
and running bridging, routing, and brouting sessions over ATM PVCs.
F R
RAME ELAY
Frame relay interworking allows frames to be transported by an ATM network to an ATM
device or another frame relay device. Use frame relay with the IDSL frame-based card that
attaches to modems using frame relay protocol. There are two standards for interworking:
•
FRF.5 defines how frames are encapsulated so that they can be carried by the ATM network
to another frame device.
• FRF.8 defines how frames are translated between ATM and frame devices.
To set up frame relay services:
•
Configure service for each IDSL frame card port (includes selecting the IDSL card transmit
clock source, and the IDSL line profile and IDSL alarm profile for each port).
•
Configure the frame relay link for each port, which involves setting the LMI (Local
Management Interface) parameters. The LMI type defines the method of exchanging status
information between the customer device and the network. The available LMI types are
LMI Rev-1, ITU 0.933 Annex-A, ANSI T1 617 Annex-D, and no LMI support.
26
Cell-Based ADSL
Channel Card
VPI-0 VPI-0
VCI-100
T
RANSMISSION
Network-side VPI/VCI values
VPI-250
VCI-300
Cross-connect
PVC
OC3
card
VPI/VCI is mapped Ports are mapped
to continue to next to same VPI/VCI
network segment
(command-line interface) or
(Web interface) for information about setting up
Avidia System Configuration and Management User Manual
are obtained from ATM
network access provider
VPI-250
VCI-300
ATM
Network
Access
Provider
"Configuring
"Configuring