Beta Draft Confidential
Configuring PNNI Routing
Frame Relay-to-ATM Over PNNI Interworking
ATM Services Configuration Guide for CBX 3500, CBX 500, GX 550, and B-STDX 9000 1/19/0521-19
Frame Relay-to-ATM Over PNNI Interworking
CBX 500, GX 550, and B-STDX 9000 switches support Frame Relay-to-ATM
interworking of offnet circuits (that is, proprietary SPVCs) across either PNNI or
ATM OSPF/PNNI networks. This capability is provided by the Offnet PVC circuit
type and is based on the Frame Relay Forum FRF.5 implementation agreement.
Circuit endpoints can be any combination of Frame Relay UNI, Frame Relay NNI,
ATM UNI, or PPP logical ports. All intermediate trunk endpoints must be configured
as PNNI ATM NNI logical ports, or OSPF direct or OPTimum trunk logical ports.
Note – OSPF can interwork Frame UNI or Frame trunk logical ports onto an ATM
trunk; PNNI can interwork Frame UNI or PPP logical ports onto a PNNI trunk.
Interworking an OSPF Frame trunk with a PNNI trunk is not currently supported.
Note – The current release does not support Frame Relay-to-PNNI interworking of
SVCs.
Note – This feature does not implement PNNI on the B-STDX 9000 switch. The
switch supports FR-SPVC endpoints only as a part of the VNN network, acting as the
endpoint for the FRF.5 circuit over an intermediate PNNI network. The B-STDX 9000
switch acts as a call originator for, and receives call requests from, FRF.5 circuits
passing through a PNNI domain and reaching it through a VNN trunk, and processes
received call requests for FRF.5 circuits over an intermediate PNNI network, passing
the request to the next node in the path. This support is for point-to-point calls only.
PMP calls are not supported.
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