Multilink Point-To-Point Protocol (Mlppp) - Alcatel-Lucent 7750 Configuration Manual

Port Features
The following BFD support is provided:
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The following mirroring support is provided:
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Multilink Point-to-Point Protocol (MLPPP)

Multilink point-to-point protocol is defined in the IETF RFC 1990, The PPP Multilink Protocol
(MP), and provides a way to distribute data across multiple links within an MLPPP bundle to
achieve high bandwidth. MLPPP allows for a single frame to be fragmented and transmitted across
multiple links. This allows for lower latency and also allows for a higher maximum receive unit
(MRU).
MP is negotiated during the initial LCP option negotiations of a standard PPP session. A router
indicates to its peer that it is willing to perform MLPPP by sending the MP option as part of the
initial LCP option negotiation. This negotiation indicates the following:
1. The system offering the option is capable of combining multiple physical links into one
2. The system is capable of receiving upper layer protocol data units (PDU) fragmented
3. The system is capable of receiving PDUs of size N octets where N is specified as part of
Once MLPPP has been successfully negotiated, the sending system is free to send PDUs
encapsulated and/or fragmented with the MP header.
MP introduces a new protocol type with a protocol ID (PID) of Ox003d.
show the MLPPP fragment frame structure. Framing to indicate the beginning and end of the
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BFD is supported on an IP interface configured over a FR SAP with e2e fragmentation
enabled.
BFD is supported on an IP interface configured over a FR SAP on a port or channel with
UNI/NNI fragmentation enabled.
BFD is not supported on an FR SAP configured on an MLFR bundle.
Port mirroring and FR SAP mirroring on an MLFR bundle.
IP mirroring for an FR SAP on an MLFR bundle.
A mirror source can be an MLFR bundle or a FR SAP on an FR bundle.
Mirror destinations must be FR SAPs and must not be part of an APS group or an MLFR
bundle.
logical link;
using the MP header and reassembling the fragments back into the original PDU for
processing;
the option even if N is larger than the maximum receive unit (MRU) for a single physical
link.
7750 SR Interface Configuration Guide
Figure 4 and Figure 5