Juniper JUNOSE 11.2, Configuration Manual

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Module Requirements
For information about the modules that support MLFR interfaces on ERX14xx models,
ERX7xx models, and the ERX310 router:
•
See ERX Module Guide, Table 1, Module Combinations for detailed module specifications.
• See ERX Module Guide, Appendix A, Module Protocol Support for information about the
modules that support MLFR.
Interface Specifiers
The interface specifier format that you use depends on the type of physical interface on
which you want to configure MLFR.
For more information about supported interface types and specifiers on E Series routers,
see Interface Types and Specifiers in
JunosE Command Reference Guide .
References
For more information about the MLFR protocol, consult the following resources:
•
Multilink Frame Relay UNI/NNI Implementation Agreement, FRF.16 (April 2000)
•
Frame Relay Forum—Frame Relay Fragmentation Implementation Agreement, FRF.12
(December 1997)
• ANSI T1.617 Annex D
•
ITU-T Q.933 Annex A
Supported MLFR Features
E Series routers support the following MLFR features on the cOCx/STMx and CT3 line
modules:
•
Logical aggregation of up to eight T1 or E1 links in a bundle
• Monotonically increasing sequence numbers for each circuit
All packets distributed across the member links have monotonically increasing sequence
numbers for each circuit. This feature enables the remote router on the customer
premises to perform resequencing (if it is configured to do so).
• Static configuration of the links participating in a multilink bundle
• Round-robin packet distribution
•
On CT3 line modules, packet distribution across the member links in a bundle is
handled only in a round-robin fashion. The round-robin approach is used even when
the member links have different line rates.
• On cOCx/STMx and COCX-F3 line modules, the router keeps track of the link with
the least traffic. If this link cannot forward a packet, the router attempts to forward
Copyright © 2010, Juniper Networks, Inc. 134
JunosE 11.2.x Link Layer Configuration Guide