MPLS Guide MPLS and RSVP-TE
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3.24.2.1.8 LSP Path Commands
path
Syntax [no] path path-name
Context config>router>mpls
Description This command creates the path to be used for an LSP. A path can be used by multiple LSPs.
A path can specify some or all hops from ingress to egress and they can be either strict or
loose. A path can also be empty (no path-name specified), in which case the LSP is set up
based on the IGP (best effort) calculated shortest path to the egress router. Paths are created
in a shutdown state. A path must be shut down before making any changes (adding or
deleting hops) to the path. When a path is shut down, any LSP using the path becomes
operationally down.
To create a strict path from the ingress to the egress router, the ingress and the egress
routers must be included in the path statement.
The no form of this command deletes the path and all its associated configuration
information. All the LSPs that are currently using this path will be affected. Additionally, all the
services that are actively using these LSPs will be affected. A path must be shut down and
unbound from all LSPs using the path before it can be deleted. The no path path-name
command will not result in any action except a warning message on the console indicating
that the path may be in use.
Default n/a
Parameters path-name — specifies the unique case-sensitive alphanumeric name label for the LSP
path, up to 32 characters in length
hop
Syntax hop hop-index ip-address {strict | loose}
hop hop-index sid-label sid-value
no hop hop-index
Context config>router>mpls>path
Description This command specifies the IP address of the hops that the LSP should traverse on its way
to the egress router. The IP address can be the interface IP address, a loopback IP address,
or the system IP address. If the system IP address is specified, the LSP can choose the best
available interface.
Optionally, the LSP ingress and egress IP addresses can be included as the first and last hop.
A hop list can include the ingress interface IP address, the system IP address, and the egress
IP address of any of the hops being specified.
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