Juniper JUNOSE 11.1.X - LINK LAYER CONFIGURATION 4-7-2010, Configuration Manual

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traffic-class-to-multilink-class mapping is transmitted without a multiclass MLPPP
header.
Related Topics
Configuring Traffic Classes on Multiclass MLPPP Interfaces on page 354
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Multiclass MLPPP Overview on page 349
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Traffic Class and Traffic-Class Groups Overview
Multiclass MLPPP LCP Extensions Overview
Link Control Protocol (LCP) establishes an MLPPP link by negotiating LCP options
with the MLPPP peer at the receiving end of a proposed connection. Peers negotiate
multiclass MLPPP during the initial phase of the LCP option negotiation.
LCP uses the following new LCP configuration options for establishing a multiclass
MLPPP link:
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Multilink header format—Multilink header format has three functions:
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It informs the receiving peer that the multiclass MLPPP feature is supported.
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It informs the peer of the multilink header format that will be used.
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It informs the peer of the number of multilink classes configured.
The router currently supports only the multilink header format option. The two
number formats that are negotiated for the multilink header format option are:
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Short sequence number
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Long sequence number—The router currently supports only long sequence
numbers
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Prefix elision—Prefix elision informs the receiving peer that only packets with
a certain prefix must be accepted. This prefix is not transmitted as part of the
information in the fragments of a multilink class. When the prefix is negotiated,
all multilink packets must be transmitted with the negotiated prefix removed
from the start of the packet. The prefix is empty for all classes, by default. The
router currently does not support the prefix elision option.
Related Topics
Multiclass MLPPP Overview on page 349
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■
Configuring Multiclass MLPPP on page 352
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Link Control Protocol in JUNOSe Link Layer Configuration Guide , Chapter 8,
Point-to-Point Protocol
Multiclass MLPPP Platform Considerations
You can configure multiclass MLPPP on the following E Series Broadband Services
Routers:
Multiclass MLPPP LCP Extensions Overview
■ 351
Chapter 10: Configuring Multiclass Multilink PPP