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MPLS Guide
If entropy-label is enabled, the entropy label and entropy label indicator (ELI) are inserted in
the label stack. In some cases, this may result in an unsupported label stack depth or large
changes in the label stack depth during the lifetime of an LSP (for example, due to switching
from a primary path with entropy label capability (ELC) enabled to a secondary path for which
the far end has not signaled ELC).
This command provides local control at the head end of an RSVP-TE or SR-TE LSP over
whether an entropy label is inserted on the LSP by overriding the ELC signaled from the far-
end LER, and control over how the additional label stack depth is accounted for.
By default, the value of entropy-label is inherited from the MPLS level. This command
overrides the default MPLS behavior on a per-LSP basis. For auto LSPs, it can only be
configured in LSP templates of type one-hop-p2p and mesh-p2p.
When the value of entropy-label changes at either the MPLS level or the LSP level, the new
operational value does not take effect until the LSP is resignaled. A shutdown/no shutdown
command must be performed on the LSP to enable the new value.
The user can use the clear command or bounce MPLS using the shutdown/no shutdown
command to force the new value to take effect for a large numbers of LSPs.
Default
entropy-label disable
Parameters
rsvp-te — indicates that the entropy-label command applies to RSVP-TE LSPs
sr-te — indicates that the entropy-label command applies to SR-TE LSPs
force-disable — the ingress LER will not consider the entropy label or the ELI in the label
enable — the ingress LER will take into consideration what is signaled from the egress
frr-object
Syntax
[no] frr-object
Context
config>router>mpls
Description
This command specifies whether signaling the FAST_REROUTE object is on or off. The
value is ignored if fast reroute is disabled for the LSP or if the LSP is using one-to-one backup.
Default
frr-object — by default, the value is inherited by all LSPs
3HE 18686 AAAB TQZZA
stack while sending the information to the TTM and NHLFE. The system will mark the
TTM and NHLFE as ELC not supported, and applications will not insert an entropy
label or ELI in the label stack.
node for ELC for marking the NHLFE, while the TTM is always marked. Although
applications will only insert the entropy label if the far end signals ELC, the additional
two labels of the entropy label and ELI are always accounted for.
Use subject to Terms available at: www.nokia.com
© 2022 Nokia.
MPLS and RSVP-TE
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