Mpls Service Usage; Service Distribution Paths - Alcatel-Lucent 7450 Manual

Ethernet service switch

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MPLS Service Usage

Alcatel-Lucent routers enable service providers to deliver virtual private networks (VPNs) and

Internet access using Generic Routing Encapsulation (GRE) and/or MPLS tunnels, with Ethernet

and/or SONET/SDH interfaces.

A service distribution path (SDP) acts as a logical way of directing traffic from one router to

another through a uni-directional (one-way) service tunnel. The SDP terminates at the far-end

router which directs packets to the correct service egress service access point (SAP) on that device.

All services mapped to an SDP use the same transport encapsulation type defined for the SDP

(either GRE or MPLS).

For information about service transport tunnels, refer to the Service Distribution Paths (SDPs)

section in the OS Services Guide. They can support up to eight forwarding classes and can be used

by multiple services. Multiple LSPs with the same destination can be used to load-balance traffic.

7450 ESS MPLS Guide