Supported Mlppp Features - Juniper JUNOSE 11.1.X - LINK LAYER CONFIGURATION 4-7-2010 Configuration Manual

JUNOSe 11.1.x Link Layer Configuration Guide

Supported MLPPP Features

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:
308
Supported MLPPP Features
RFC 1661 The Point-to-Point Protocol (PPP) (July 1994)
RFC 1990 The PPP Multilink Protocol (MP) (August 1996)
RFC 2233 The Interfaces Group MIB using SMIv2 (November 1997)
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 305.
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 324.
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 305.
For details on enabling MLPPP reassembly, see "Configuring MLPPP
Fragmentation and Reassembly" on page 324.
Multiclass MLPPP