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Cisco Cisco IOS Software Release 12.2(27)SBC

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Link Fragmentation and Interleaving for Frame Relay and ATM Virtual Circuits
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Cisco IOS Release: Multiple releases (see the Feature History table)
Contents
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Prerequisites for 
LFI for Frame Relay and ATM PVCs
The following prerequisites apply to the LFI for Frame Relay and ATM Virtual Circuits feature:
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For Frame Relay interfaces, Frame Relay traffic shaping must be configured.
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For Frame Relay and ATM PVCs associated with MLP, per-PVC FIFO queuing must be configured.
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MLP over ATM requires an ATM network module such as one of the following:
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Multiport T1/E1 ATM Network Module with Inverse Multiplexing over ATM
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ATM OC-3 Network Module 
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PA-A3 and PA-A6 Enhanced ATM Port Adapters
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G.shdsl WAN Interface Cards 
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ADSL WAN Interface Cards
Restrictions for 
LFI for Frame Relay and ATM PVCs
The following restrictions apply to the LFI for Frame Relay and ATM Virtual Circuits feature:
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Only one link per MLP bundle is supported.
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Voice over Frame Relay and Voice over ATM are not supported (only Voice over IP is supported).
Information About 
LFI for Frame Relay and ATM PVCs
To configure the LFI for Frame Relay and ATM Virtual Circuits feature, you should understand the 
following concepts:
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