Capability to compute diverse paths between a set of LSPs

You can associate a group of LSPs (RSVP LSPs or SR MPLS LSPs) to the Path Computation Element Communication Protocol (PCEP) to compute diverse paths for the associated LSPs. The Junos PCC advertises to a Path Computation Element (PCE) that a particular LSP belongs to a diversity-association group. RFC 8800 defines PCEP protocol extensions to associate a set of LSPs that belong to the same association group. This enables a PCE to compute diverse paths for each of the LSPs in each diversity association group and then push the results to the PCC. A PCE can also associate set of LSPs across different PCCs. 

You can enable diversity-association capability in the open message by configuring the following statement:

user@host# set protocol pcep diversity-association-capability 

After enabling diversity-association capability, you need to also configure the diversity-association group using the following statement: 

For RSVP LSPs: 

user@host# set protocols mpls label-switched-path lsp-name lsp-external-controller pccd diversity-association group group-name 

For SR LSPs: 

user@host# set protocols source-packet-routing source-routing-path lsp-name diversityassociation group group-name 

You can provision and delegate the following LSPs:

• Provision PCE initiated RSVP LSPs with diverse paths
• Delegate RSVP LSPs with diverse association groups
• Provision PCE initiated SR MPLS uncolored LSPs with diverse paths
• Delegate SR MPLS uncolored LSPs with diverse association groups 
• Provision PCE initiated SR MPLS colored LSPs with diverse paths
• Delegate SR MPLS colored LSPs with diverse association groups
• Provision PCE initiated SRv6 colored LSPs with diverse paths
• Delegate SRv6 colored LSPs with diverse association groups
• Provision PCE initiated SRv6 uncolored LSPs with diverse paths
• Delegate SRv6 uncolored LSPs with diverse association groups