Alcatel-Lucent 7210 SAS M Service Manual page 100

SDP Commands
SDP Commands
Note: SDP commands are not applicable for 7210 SAS-M devices configured in Access-Uplink
mode.
sdp
Syntax sdp sdp-id [mpls] [create]
no sdp sdp-id
Context config>service
This command creates or edits a Service Distribution Point (SDP). SDPs must be explicitly
Description
configured.
An SDP is a logical mechanism that ties a far-end 7210 SAS M to a particular service without having
to specifically define far end SAPs. Each SDP represents a method to reach a 7210 SAS M router.
The other method is Multi-Protocol Label Switching (MPLS) encapsulation. A 7210 SAS M supports
both signaled and non-signaled Label Switched Paths (LSPs) through the network. Non-signaled
paths are defined at each hop through the network. Signaled paths are communicated by protocol
from end to end using Resource ReserVation Protocol (RSVP). Paths may be manually defined or a
constraint-based routing protocol (such as OSPF-TE or CSPF) can be used to determine the best path
with specific constraints. An LDP LSP can also be used for an SDP when the encapsulation is MPLS.
The use of an LDP LSP type or an RSVP/Static LSP type are mutually exclusive except when the
mixed-lsp option is enabled on the SDP.
SDPs are created and then bound to services. Many services may be bound to a single SDP. The
operational and administrative state of the SDP controls the state of the SDP binding to the service.
If sdp-id does not exist, a new SDP is created. When creating an SDP, the mpls keyword must be
specified. SDPs are created in the admin down state (shutdown) and the no shutdown command
must be executed once all relevant parameters are defined and before the SDP can be used.
If sdp-id exists, the current CLI context is changed to that SDP for editing and modification. For
editing an existing SDP, the mpls keyword is specified. If a keyword is specified for an existing sdp-
id, an error is generated and the context of the CLI will not be changed to the specified sdp-id.
The no form of this command deletes the specified SDP. Before an SDP can be deleted, it must be
administratively down (shutdown) and not bound to any services. If the specified SDP is bound to a
service, the no sdp command will fail generating an error message specifying the first bound service
found during the deletion process. If the specified sdp-id does not exist an error will be generated.
none
Default
sdp-id — The SDP identifier.
Parameters
mpls — Specifies the SDP will use MPLS encapsulation and one LSP tunnels to reach the far-end
device. Multiple MPLS SDPs may be created to a given destination device . Multiple MPLS SDPs to
a single destination device are helpful when they use divergent paths.
Page 100
1 — 17407
Values
7210 SAS M Services Guide