MPLS and RSVP
7210 SAS M, T, X, R6, Mxp MPLS Configuration Guide Page 157
LSP Path Commands
hop
Syntax hop hop-index ip-address {strict | loose}
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 or the system IP address. If the system IP
address is specified then the LSP can choose the best available interface.
Optionally, the LSP ingress and egress IP address can be included as the first and the 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.
The no form of this command deletes hop list entries for the path. All the LSPs currently using this
path are affected. Additionally, all services actively using these LSPs are affected. The path must be
shutdown first in order to delete the hop from the hop list. The no hop hop-index command will not
result in any action except a warning message on the console indicating that the path is
administratively up.
Default none
Parameters hop-index — The hop index is used to order the hops specified. The LSP always traverses from the
lowest hop index to the highest. The hop index does not need to be sequential.
Values 1 — 1024
ip-address — The system or network interface IP address of the transit router. The IP address can be
the interface IP address or the system IP address. If the system IP address is specified then the
LSP can choose the best available interface. A hop list can also include the ingress interface IP
address, the system IP address, and the egress IP address of any of the specified hops.
loose — This keyword specifies that the route taken by the LSP from the previous hop to this hop
can traverse through other routers. Multiple hop entries with the same IP address are flagged as
errors. Either the loose or strict keyword must be specified.
strict — This keyword specifies that the LSP must take a direct path from the previous hop router to
this router. No transit routers between the previous router and this router are allowed. If the IP
address specified is the interface address, then that is the interface the LSP must use. If there are
direct parallel links between the previous router and this router and if system IP address is
specified, then any one of the available interfaces can be used by the LSP. The user must ensure
that the previous router and this router have a direct link. Multiple hop entries with the same IP
address are flagged as errors. Either the loose or strict keyword must be specified.
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