Class-Based Forwarding; Figure 9: Class-Based Forwarding Over Sdp Lsps - Alcatel-Lucent 7750 SR Manual

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Class-Based Forwarding

Application of Class-Based Forwarding over RSVP LSPs

Class based forwarding over RSVP LSPs allows a service packet to be forwarded over a specific

RSVP LSP, part of an SDP, based on its ingress determined forwarding class. The LSP selected

depends on the operational status and load-balancing algorithms used for ECMP and LAG

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RSVP or static LSPs that are part of the same SDP based on the packets' forwarding class. The

forwarding class of the packet is the one assigned to the packet as a result of applying the ingress

QoS policy to the service SAP. The VLL service packets are all classified into the "

forwarding class and those that are destined to PE2 are forwarded over LSP1. Multicast and

broadcast are classified into the "be" class and are forwarded over LSP2.

This feature allows service providers to dedicate specific LSPs with a determined level of traffic

engineering and protection to select service packets. For example, packets of a VoIP service are

assigned the "

engineered and FRR-protected LSP paths across the service provider network.

7750 SR OS Services Guide

Application of Class-Based Forwarding over RSVP LSPs on page 51

Operation of Class-Based Forwarding over RSVP LSPs on page 52

illustrates the use of class-based forwarding to direct packets of a service to specific

" class to expedite their forwarding but are also sent over carefully traffic-

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Ethernet/LAN

SAP 1/1/1:1000

Ethernet/VLAN

SAP 1/1/1:1001

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