Point-to-Multipoint MPLS (P2MP) Commands
Page 286 7450 ESS MPLS Guide
Each S2L sub-LSP is signaled in a separate path message. Each leaf node will respond with its own
RESV message. A branch LSR node will forward the path message of each S2L sub-LSP to the
downstream LSR without replicating it. It will also forward the RESV message of each S2L sub-LSP
to the upstream LSR without merging it with the RESV messages of other S2L sub-LSPs of the same
P2MP LSP. The same is done for subsequent refreshes of the path and RESV states.
The S2L paths can be empty paths or can specify a list of explicit hops. The path name must exist and
must have been defined using the config>router>mpls>path command. The same path name can be
re-used by more than one S2L of the primary P2MP instance. However, the to keyword must have a
unique argument per S2L as it corresponds to the address of the egress LER node.
Default none
Parameters path-name — Specifies the name of the path which consists of up to 32 alphanumeric characters.
to ip-address — Specifies the system IP address of the egress router.
p2mp-resignal-timer
Syntax p2mp-resignal-timer minutes
no p2mp-resignal-timer
Context config>router>mpls
Description This command configures the re-signal timer for a P2MP LSP instance. MPLS will request CSPF to
re-compute the whole set of S2L paths of a given active P2MP instance each time the P2MP re-signal
timer expires. The P2MP re-signal timer is configured separately from the P2P LSP parameter.
MPLS performs a global MBB and moves each S2L sub-LSP in the instance into its new path using a
new P2MP LSP ID if the global MBB is successful, regardless of the cost of the new S2L path.
The no form of this command disables the timer-based re-signaling of P2MP LSPs on this system.
Parameters minutes — Specifies the time MPLS waits before attempting to re-signal the P2MP LSP instance.
Values 60 — 10080
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