Beta Draft Confidential
Configuring ATM PVCs
Configuring Frame Relay-to-ATM Interworking Circuits
ATM Services Configuration Guide for CBX 3500, CBX 500, GX 550, and B-STDX 9000 1/19/0510-41
Frame Relay-to-ATM Network Interworking
Frame Relay-to-ATM Network Interworking (FRF.5) allows you to connect two
Frame Relay end nodes, for example Frame Relay access devices (FRADs) or routers,
which are attached to a Frame Relay network over an ATM backbone. The FRADs
have no knowledge of the ATM backbone because the network equipment,
particularly ATM WAN switches, provide the interworking function. The ATM
backbone can support multiple Frame Relay networks, providing a scalable,
high-speed option that does not require changes to CPEs.
Lucent’s implementation of FRF.5 enables a single Frame Relay PVC to tunnel
through an ATM network via an ATM PVC. The ATM PVC is located in the core of
the ATM network and is treated as a virtual NNI running LMI with the far-end entity.
This implementation of the FRF.5 ATM Forum implementation agreement is available
for the following CBX 500 and B-STDX 9000 Frame Relay cards:
In the B-STDX or CBX switch that contains the frame relay user interface, the card
configured as the frame relay UNI endpoint must be one of the frame relay cards listed
above. The card that contains the other circuit endpoint may be a CBX or GX ATM
card. The interworking function is always performed on the frame relay card.
Configuring Link Management for the Frame Relay Logical Port
When you configure the Frame Relay logical port endpoint for this circuit, the Link
Management Protocol can be set to any of the following protocols: Disable, LMI
Rev1, ANSI T1.617 Annex D, CCITT Q.933 Annex A, or Auto Detect. This attribute
appears on the Add Logical Port dialog box, on the Link Management tab. For
information about configuring a logical port to set this attribute, see the Frame Relay
Services Configuration Guide for CBX 3500, CBX 500, and B-STDX 9000.
Table 10-8. Cards Supporting FRF.5
B-STDX 9000 CBX 500
• 10-port DSX-1 IOP • 6-port DS3 FR/IP IOM
• 4-port E1/T1 IOP • 4-port Channelized DS3/1 FR/IP IOM
• 8-port Universal IOP • 4-port Channelized DS3/1/0 FR/IP IOM
• 12-port Unchannelized E1 IOP • 8-port Subrate DS3 FR/IP IOM
• 2-port HSSI • 32-port Channelized T1/E1 FR/IP IOM
• 1-port Channelized DS3/1/0 • 6-port Channelized DS3/1/0 FR IOM
• 1-port Channelized DS3/1
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