Alcatel-Lucent 7750 SR OS Service Manual page 493

VPLS SAP Commands
sap
Syntax sap sap-id [split-horizon-group group-name] [create]
no sap sap-id
Context config>service>vpls
Description
This command creates a Service Access Point (SAP) within a service. A SAP is a combination of port
and encapsulation parameters which identifies the service access point on the interface and within the
7750. Each SAP must be unique.
All SAPs must be explicitly created. If no SAPs are created within a service or on an IP interface, a
SAP will not exist on that object.
Enter an existing SAP without the create keyword to edit SAP parameters. The SAP is owned by the
service in which it was created.
A SAP can only be associated with a single service. A SAP can only be defined on a port that has
been configured as an access port using the config interface port-type port-id mode access
command. Channelized TDM ports are always access ports.
If a port is shutdown, all SAPs on that port become operationally down. When a service is shutdown,
SAPs for the service are not displayed as operationally down although all traffic traversing the service
will be discarded. The operational state of a SAP is relative to the operational state of the port on
which the SAP is defined.
The no form of this command deletes the SAP with the specified port. When a SAP is deleted, all
configuration parameters for the SAP will also be deleted. For Internet Ethernet Service (IES), the IP
interface must be shutdown before the SAP on that interface may be removed.
Default
No SAPs are defined.
Special Cases
A VPLS SAP can be defined with Ethernet ports, SONET/SDH or TDM channels. Up to 127 SAPs
can be defined in a VPLS service per Media Dependent Adapter (MDA). Attempts to create more
than 127 SAPs will generate an error. Up to 49 SDPs can be associated with a VPLS in a single 7750
SR router. Each SDP must have a unique 7750 SR destination or an error will be generated. Split
horizon groups can only be created in the scope of a VPLS service.
A default SAP has the following format: port-id:*. This type of SAP is supported only on Ethernet
MDAs and its creation is allowed only in the scope of Layer 2 services (Epipe and VPLS). This type
of SAP is mutually exclusive with a SAP defined by explicit null encapsulation (for example, 1/1/
1:0).
Parameters
sap-id — Specifies the physical port identifier portion of the SAP definition.
7750 SR OS Services Guide
Virtual Private LAN Services
Page 493