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8-1
Cisco ASR 1000 Series Aggregation Services Routers Software Configuration Guide
OL-16506-17
8
Multilink PPP Support for the Cisco ASR 1000
Series Routers
First Published: October 2012
Last Updated: May 25, 2015
Multilink Point-to-Point Protocol (MLP) provides support to aggregate the bandwidth of low-speed
WAN and broadband links into a single entity, referred to as a bundle interface. A bundle interface is a
logical entity that provides a single point in which other features (for example, Quality of Service [QoS])
can be attached. MLP provides incremental bandwidth on demand, by adding additional links to the
bundle, as needed. MLP also enables interleaving of latency-sensitive priority traffic with fragmented
nonpriority traffic using link fragmentation and interleaving (LFI).
Member links that are a part of an MLP bundle can be bundled across ports on:
• The same shared port adapter (SPA)
• Different SPAs on the same SPA interface processor (SIP)
• Different SPAs on different SIPs
The Cisco IOS XE software supports MLP links for serial (T1, E1, NxDS0) and broadband topologies
such as Multilink PPP over ATM (MLPoA), Multilink PPP over Ethernet (MLPoE), Multilink PPP over
Ethernet over ATM (MLPoEoA), and Multilink PPP over LNS (MLPoLNS). Additionally, the Cisco IOS
XE software allows the device to operate as an L2TP Access Concentrator (LAC), L2TP Network Server
(LNS), or PPP Termination and Aggregation (PTA) device.
This document describes the features, limitations, and scaling of MLP on the Cisco ASR 1000 Series
Aggregation Services Routers running the Cisco IOS XE software. For information about the
configuration and operation of MLP in the Cisco IOS XE software, see the “Configuring Multilink PPP
Connections” chapter in the Wide-Area Networking Configuration Guide: Multilink PPP, Cisco IOS XE
Release 3S (Cisco ASR 1000).
Finding Feature Information
Your software release may not support all the features documented in this module. For the latest
information about features and caveats, see the release notes for your platform and software release. To
find information about the features documented in this module, and to see a list of the releases in which each
feature is supported, see the ?$paranum>Feature Information for Multilink PPP Support for Cisco ASR
1000 Series Routers? section on page 8-18.