Cisco ASR 900 Series User Manual

CHAPTER 3
MPLS Multilink PPP Support
This chapter is not applicable on the ASR 900 RSP3 Module for the Cisco IOS XE Release 3.16.Note
The MPLS Multilink PPP Support feature ensures that MPLS Layer 3 Virtual Private Networks (VPNs)
with quality of service (QoS) can be enabled for bundled links. This feature supports Multiprotocol Label
Switching (MPLS) over Multilink PPP (MLP) links in the edge (provider edge [PE]-to-customer edge [CE])
or in the MPLS core (PE-to-PE and PE-to-provider [P] device).
Service providers that use relatively low-speed links can use MLP to spread traffic across them in their MPLS
networks. Link fragmentation and interleaving (LFI) should be deployed in the CE-to-PE link for efficiency,
where traffic uses a lower link bandwidth (less than 768 kbps). The MPLS Multilink PPP Support feature
can reduce the number of Interior Gateway Protocol (IGP) adjacencies and facilitate load sharing of traffic.
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Prerequisites for MPLS Multilink PPP Support, page 45
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Restrictions for MPLS Multilink PPP Support, page 45
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Information About MPLS Multilink PPP Support, page 46
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How to Configure MPLS Multilink PPP Support, page 51
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Configuration Examples for MPLS Multilink PPP Support, page 60
Prerequisites for MPLS Multilink PPP Support
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Multiprotocol Label Switching (MPLS) must be enabled on provider edge (PE) and provider (P) devices
Restrictions for MPLS Multilink PPP Support
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Only 168 multilink bundles can be created per the OC-3 interface module on the router.
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The maximum number of members per multilink bundle is 16.
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Links in multilink bundles must be on the same interface module.
MPLS Basic Configuration Guide, Cisco IOS XE Everest 16.5.1 (Cisco ASR 900 Series)
45

Cisco ASR 900 Series Specifications

General

Brand	Cisco
Model	ASR 900 Series
Category	Network Router
Language	English