Inserting a Hop into a Path

1. Select the path to insert the hop.
   

   device(config-routr-mpls)# path sf_to_sj

2. Insert hop.
   

   device(config-router-mpls-path-sf_to_sj)# insert 2.3.4.5 strict before 1.2.3.4

   The insert command allows a new hop to be inserted in front of an existing hop within the path. In this example, the insert 10.150.1.1 strict before 10.150.1.2 command assumes that 10.150.1.2 is already in the path and inserts 10.150.1.1 before it.
3. Exit current level.
   

   device(config-router-mpls-path-sf_to_sj)# exit

Example

The following example show inserting strict node 10.150.1.1 in the path before node 10.150.1.2.

device# configure
device(config)#router mpls
device(config-router-mpls)# path sf_to_sj
device(config-router-mpls-path-sf_to_sj)# insert 2.3.4.5 strict before 1.2.3.4
device(config-router-mpls-path-sf_to_sj)# exit

Note

When the user modifies a path, the changes are not carried over to active LSPs that see the path until the LSPs are deactivated and reactivated. For example, path sj_to_sf may be used by an LSP called lsp1. After lsp1 has been activated, any changes to path sj_to_sf do not cause the route followed by lsp1 to be modified. To get the LSP to use the modified path, the user must deactivate and then reactivate lsp1.