Supported Mlppp Features - Juniper JUNOSE SOFTWARE 11.2.X - LINK LAYER CONFIGURATION GUIDE 7-7-2010 Configuration Manual

JunosE 11.2.x Link Layer Configuration Guide

Supported MLPPP Features

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The router currently supports both the static configuration of the links participating in a
multilink bundle and the dynamic creation of MLPPP bundles over L2TP (only on the
LNS) when the LNS detects multilink LCP option negotiation in LCP proxy data.
The following MLPPP features are available for both static and dynamic MLPPP:
Logical aggregation of up to eight links in a bundle
Long sequence numbers
Authentication for interfaces with MLPPP encapsulation or for MLPPP bundles
Monotonically increasing sequence numbers
All packets distributed across the member links have monotonically increasing sequence
numbers. This feature enables the remote system on the customer premises to perform
resequencing (if the system is configured to do so).
Round-robin packet distribution or hash-based packet distribution
By default, E Series routers use a round-robin algorithm to handle packet distribution
across the member links in a bundle for both best-effort traffic and non-best-effort
traffic. The round-robin approach is used even when the member links have different
line rates.
As an alternative to round-robin packet distribution for non-best-effort traffic, you can
enable use of a hash-based algorithm for distribution of non-best-effort (high-priority)
packets, such as voice or video. Using a hash-based packet distribution mechanism
instead of the default round-robin packet distribution mechanism for non-best-effort
traffic ensures that the router maintains the proper packet order when transmitting
high-priority packets. For details, see "MLPPP Link Selection" on page 301.
Forwarding of multilink traffic to L2TP tunnels
E Series routers support dynamic MLPPP over L2TP configurations (on the L2TP network
server, or LNS).
Fragmentation and reassembly
For details, see "Configuring MLPPP Fragmentation and Reassembly" on page 320.
Packet resequencing for best-effort traffic, for non-best-effort traffic, and when MLPPP
reassembly is enabled
For details on how the router supports packet resequencing for best-effort traffic and
non-best-effort traffic, see "MLPPP Link Selection" on page 301.
For details on enabling MLPPP reassembly, see "Configuring MLPPP Fragmentation
and Reassembly" on page 320.
Multiclass MLPPP
For information about multiclass MLPPP, see "Configuring Multiclass Multilink PPP"
on page 345.
Copyright © 2010, Juniper Networks, Inc.