Service Entities; Figure 1: Service Entities And The Service Model - Alcatel-Lucent 7705 Service Manual

Service Entities

The basic (logical) service entities in the service model used to construct an end-to-end
service are:
Figure 1
subscriber (or customer) attachment circuit connects to a SAP. SDPs define the entrance and
exit points of unidirectional service tunnels, which carry one-way traffic between the two
routers (ALU-A and ALU-B). After SDPs have been configured, they are bound to a service,
which is the final step in making the end-to-end service connection. In
point is labeled SDP and the exit point is labeled Exit.
Traffic encapsulation occurs at the SAP and SDP. The SAP encapsulation types are
SONET/SDH, Ethernet, and TDM. The SDP encapsulation types are MPLS, GRE, and IP.
For information on SAP encapsulation types, see
For information on SDP encapsulation types, see
Service
access
Subscribers
points
Customer
SAP
27
Customer
SAP
25
Customer
SAP
7
7705 SAR OS Services Guide
• Customers
• Service Types
• Service Access Points (SAPs)
• Service Destination Points (SDPs)
shows an example of how the service entities relate to the service model. A

Figure 1: Service Entities and the Service Model

Service
destination
points
Service
SDP
Service
Exit
Exit
Service
ALU-A
SAP Encapsulation Types and
SDP Encapsulation
Service Service
destination access
points points
Service SAP
Exit
Exit
SAP
Service
SDP
SAP
Service
ALU-B
Services Overview
Figure 1, the entrance
Identifiers.
Types.
Subscribers
Customer
27
Customer
25
Customer
7
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