Alcatel-Lucent Service Model - Alcatel-Lucent 7750 SR Manual

Alcatel-Lucent Service Model

In the Alcatel-Lucentservice model, the service edge routers are deployed at the provider edge.
Services are provisioned on the service routers and transported across an IP and/or IP/MPLS
provider core network in encapsulation tunnels created using generic router encapsulation (GRE)
or MPLS label switched paths (LSPs).
The service model uses logical service entities to construct a service. The logical service entities
are designed to provide a uniform, service-centric configuration, management, and billing model
for service provisioning. Some benefits of this service-centric design include:
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Service provisioning uses logical entities to provision a service where additional properties can be
configured for bandwidth provisioning, QoS, security filtering, accounting/billing to the
appropriate entity.
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Many services can be bound to a single customer.
Many services can be bound to a single tunnel.
Tunnel configurations are independent of the services they carry.
Changes are made to a single logical entity rather than multiple ports on multiple devices.
It is easier to change one tunnel rather than several services.
The operational integrity of a logical entity (such as a service tunnel and service end
points) can be verified rather than dozens of individual services improving management
scaling and performance.
A failure in the network core can be correlated to specific subscribers and services.
QoS policies, filter policies, and accounting policies are applied to each service instead of
correlating parameters and statistics from ports to customers to services.
7750 SR OS Services Guide