Setting Tie-Break Option for Dynamic Bypass CSPF

A user can create an interface level tie-breaking option for the CSPF calculation of dynamic bypass LSPs to be created for the protected MPLS interface. Use this option for the dynamic bypass LSP path computation tie breaking procedure.

To create an interface level tie-breaking option for the CSPF calculation of a dynamic bypass LSP, complete the following steps.

1. Enable the device for configuration.
   

   device>configure

2. Enable the MPLS router.
   

   device(config)# router mpls

3. Enable MPLS-capable interfaces and specify the selected interface. In this example, the selected Ethernet interface is 0/8.
   

   device(config-router-mpls)# mpls-interface ethernet 0/8

4. Enable dynamic bypass
   

   device(config-router-mpls-if-ethernet-0/8)# dynamic-bypass

5. Configure the tie-breaking command with the least-fill option.
   

   device(config-router-mpls-if-ethernet-0/8-dynamic-bypass)# tie-breaking  least-fill

Example

The following example combines the steps above to configure the tie-breaking command to use the least-fill option for the CSPF calculation of dynamic bypass LSPs.

device>configure
device(config)# router mpls
device(cnfig-router-mpls)# mpls-interface ethernet 0/8
device(config-router-mpls-if-ethernet-0/8)# dynamic-bypass
device(config-router-mpls-if-ethernet-0/8-dynamic-bypass)# tie-breaking  least-fill