Alcatel-Lucent 7705 Service Manual page 112

Global Service Command Reference
SDP Commands
sdp
Syntax sdp sdp-id [gre | mpls | ip] [create]
no sdp sdp-id
Context config>service
Description This command creates or edits an SDP. SDPs must be explicitly configured.
An SDP is a (logical) service entity that is created on the local router. An SDP identifies the endpoint
of a logical, unidirectional service tunnel. Traffic enters the tunnel at the SDP on the local router and
exits the tunnel at the remote router. Thus, it is not necessary to specifically define far-end SAPs.
The 7705 SAR supports generic routing encapsulation (GRE) tunnels, multiprotocol label switching
(MPLS) tunnels, and IP tunnels.
For MPLS, a 7705 SAR 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 LSPs are
established in LDP-DU (downstream unsolicited) mode.
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. SDPs are created in the admin down state (shutdown).
Once all relevant parameters are defined, the no shutdown command must be executed before the
SDP can be used.
If sdp-id exists, the current CLI context is changed to that SDP for editing and modification. If editing
an existing SDP, the gre, mpls, or ip keyword is not specified. If a keyword is specified for an
existing sdp-id, an error is generated and the context of the CLI is not 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 fails, generating an error message specifying the first bound service
found during the deletion process. If the specified sdp-id does not exist, an error is generated.
Default none
Parameters sdp-id — the SDP identifier
gre — specifies that the SDP will use GRE encapsulation tunnels. Only one GRE SDP is supported to
mpls — specifies that the SDP will use MPLS encapsulation and one or more LSP tunnels to reach
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Values 1 to 17407
a given destination 7705 SAR or 7710/7750 SR.
the far-end 7705 SAR or 7710/7750 SR. Multiple MPLS SDPs are supported to a given
destination service router. Multiple MPLS SDPs to a single destination service router are helpful
when they use divergent paths.
7705 SAR OS Services Guide