MPLS and RSVP-TE
192
MPLS Guide
© 2022 Nokia.
Use subject to Terms available at: www.nokia.com
3HE 18686 AAAB TQZZA
node-protect
Syntax [no] node-protect
Context config>router>mpls>lsp>fast-reroute
config>router>mpls>lsp-template>fast-reroute
Description This command enables or disables node and link protection on the specified LSP. Node
protection ensures that traffic from an LSP traversing a neighboring router will reach its
destination even if the neighboring router fails.
When node-protect is enabled, the 7705 SAR provides node protection on the specified
LSP. If node protection cannot be provided, link protection is attempted. If link protection
cannot be provided, there will be no protection.
The no form of this command provides link protection. If link protection cannot be provided,
there will be no protection.
Default node-protect (for an LSP)
no node-protect (for an LSP template)
propagate-admin-group
Syntax [no] propagate-admin-group
Context config>router>mpls>lsp>fast-reroute
config>router>mpls>lsp-template>fast-reroute
Description The command enables the signaling of the primary LSP path admin-group constraints in the
FAST_REROUTE object at the ingress LER.
When this command is executed, the admin-group constraints configured in the context of the
point-to-point LSP primary path, or the constraints configured in the context of the LSP and
inherited by the primary path, are copied into the FAST_REROUTE object. The admin-group
constraints are copied into the “include-any” or “exclude-any” fields.
The ingress LER propagates these constraints to the downstream nodes during the signaling
of the LSP so that the downstream nodes can include the constraints in the selection of the
FRR backup LSP for the LSP primary path.
The ingress LER inserts the FAST_REROUTE object by default in a primary LSP PATH
message.
The same admin-group constraints can be copied into the SESSION_ATTRIBUTE object
using the propagate-admin-group command at the config>router>mpls>lsp level. They are
intended for the use of an LSR, typically an ABR, to expand the ERO of an inter-area LSP
path. They are also used by any LSR node in the path of a CSPF or non-CSPF LSP to check
the admin-group constraints against the ERO whether the hop is strict or loose.
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