MPLS and RSVP-TE
208
MPLS Guide
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Use subject to Terms available at: www.nokia.com
3HE 18686 AAAB TQZZA
hop-limit
Syntax hop-limit number
no hop-limit
Context config>router>mpls>lsp>primary
config>router>mpls>lsp>secondary
Description This optional command overrides the config>router>mpls>lsp lsp-name>hop-limit
command. This command specifies the total number of hops that an LSP traverses, including
the ingress and egress routers.
This value can be changed dynamically for an LSP that is already set up with the following
implications:
• If the new value is less than the current number of hops of the established LSP, then the
LSP is brought down. MPLS then tries to re-establish the LSP within the new hop-limit
number. If the new value is equal to or greater than the current hops of the established
LSP, then the LSP will be unaffected.
The no form of this command resets the hop limit to the value defined under the LSP
definition using the config>router>mpls>lsp lsp-name>hop-limit command.
Default no hop-limit
Parameters number — specifies the number of hops the LSP can traverse, expressed as an integer
Values 2 to 255
path-preference
Syntax path-preference preference-number
no path-preference
Context config>router>mpls>lsp>secondary
Description This command allows a priority value to be assigned to a standby secondary LSP path. The
secondary LSP path must be configured in standby mode using the standby command to
ensure that it is signaled and maintained indefinitely in a hot-standby state. The standby
secondary LSP path configured with the highest priority (the lowest path-preference value)
is made the active LSP when the primary LSP is not in use. If multiple standby secondary
LSP paths are configured wit the same value, the system selects the path with the lowest
uptime.
If all standby secondary paths have the default path-preference value, a non-standby
secondary path remains the active path even though a configured standby secondary path is
available.
This command only applies to secondary LSP paths that have been configured in standby
mode.
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