MLPPP Overview
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Alcatel-Lucent
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CLI Configuration Guide
MLPPP C
OMPONENTS
A typical MLPPP configuration has at least two components:
•
A bundle interface
•
An interface running PPP that is made multilink-enabled and attached to the
bundle interface.
MLPPP O
PERATION
To establish communication over a PPP Multilink, a MRRU (Maximum Receive
Reconstructed Unit) configuration option is sent to the peer during LCP
negotiation. Optionally, an Endpoint Discriminator Option or SSHNF Option may
also be sent out. LCP negotiation and optional link authentication take place on
each bundle link. IPCP negotiation happens over the bundle, meaning IPCP
packets may be sent on any one of the bundle links. Certain LCP packets like LCP
Echo-Request and LCP Echo-Reply may be transmitted over the bundle. IP
packets are sent over the bundle.
The MLPPP packet is encapsulated using an MLPPP header which is different
from the standard PPP header. It contains a sequence number and additionally
allows for fragmentation or re-assembly of the packet.
MLPPP is also referred to as MP or MPPP.
Figure 32: MLPPP Header in Long Sequence Number Format
Summary of Contents for OmniAccess 700
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