MPLS Guide MPLS and RSVP-TE
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MPLS resignals and moves the LSP to the new path in the following cases:
• initial LSP path signaling
• retry of an LSP path after failure
• MBB due to an LSP path configuration change, that is, a user change to the bandwidth
parameter of the primary or secondary path, or a user enabling of the fast-reroute option
for the LSP
• MBB of the path due to an update to the primary path SRLG
• MBB due to fast reroute global revertive procedures on the primary path
• manual resignaling of an LSP path or of all LSP paths by the user
During a manual resignaling of an LSP path, MPLS always resignals the path even if the new
path is the same as the current path and even if the metric of the new path is the same as the
metric of the current path.
During a timer-based resignaling of an LSP path that has the least-fill option enabled, MPLS
only resignals the path if the metric of the new path is different from the metric of the current
path.
Default no least-fill - the path of an LSP is randomly chosen among a set of equal-cost paths
load-balancing-weight
Syntax load-balancing-weight weight
no load-balancing-weight
Context config>router>mpls>lsp>load-balancing-weight
config>router>mpls>lsp-template>load-balancing-weight
Description This command assigns a weight to an MPLS LSP or an MPLS LSP template for use in
weighted load balancing (weighted ECMP) over MPLS.
The no form of this command removes the load-balancing weight from the LSP or LSP
template.
Default 0
Parameters number — a 32-bit integer representing the weight of the LSP
Values 1 to 100
max-sr-labels
Syntax max-sr-labels label-stack-size [additional-frr-labels labels]
no max-sr-labels
Context config>router>mpls>lsp
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