Page 166 7750 SR OS Services Guide
Description This command creates associations between one or more label switched paths (LSPs) and an Multi-
Protocol Label Switching (MPLS) Service Distribution Point (SDP). This command is implemented
only on MPLS-type encapsulated SDPs.
In MPLS SDP configurations either one LSP can be specified or LDP can be enabled. The SDP ldp
and lsp commands are mutually exclusive. If an LSP is specified on an MPLS SDP, then LDP cannot
be enabled on the SDP. To enable LDP on the SDP when an LSP is already specified, the LSP must be
removed from the configuration using the no lsp lsp-name command.
Alternatively, if LDP is already enabled on an MPLS SDP, then an LSP cannot be specified on the
SDP. To specify an LSP on the SDP, the LDP must be disabled. The LSP must have already been
created in the config>router>mpls context. with a valid far-end IP address. RSVP must be enabled.
Each LSP has a preference value defined that is derived from its active path or the LSP itself. When
multiple LSPs are defined on an SDP, the LSP with the highest preference will be used for packets
transmitted to the far-end device.
If no LSP is associated with an MPLS SDP, the SDP cannot enter the operationally up state. The SDP
can be administratively enabled (no shutdown) with no LSP associations. The lsp-name may be
shutdown, causing the association with the SDP to be operationally down (the LSP will not be used
by the SDP).
LSP SDPs also require that the TLDP signaling is specified and the SDP Keepalive parameter must
be enabled and and not timed out.
Up to 16 LSP names can be entered on a single command line.
The no form of this command deletes one or more LSP associations from an SDP. If the lsp-name
does not exist as an association or as a configured LSP, no error is returned. An lsp-name must be
removed from all SDP associations before the lsp-name can be deleted from the system. The SDP
must be administratively disabled (shutdown) before the last lsp-name association with the SDP is
deleted.
Default none
Parameters lsp-name — The name of the LSP to associate with the SDP. An LSP name is case sensitive and is
limited to 32 ASCII 7-bit printable characters with no spaces. If an exact match of lsp-name does
not already exist as a defined LSP, an error message is generated. If the lsp-name does exist and
the LSP to IP address matches the SDP far-end IP address, the association is created.
metric
Syntax metric metric
no metric
Context config>service>sdp
Description This command specifies the metric to be used within the tunnel table manager for decision making
purposes. When multiple SDPs going to the same destination exist, this value is used as a tie-breaker
by tunnel table manager users such as MP-BGP to select the route with the lower value.
Parameters metric — Specifies the SDP metric.
Values 0 — 65535
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