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Hello,
Is it feasible to configure LSPs @ Core Routers levels (P Routers) ?
In which case we have to deploy this solution ?
What's the benifits ?
Thank you.
Best Regards.
LDP over RSVP tunnel does this work .
You can run RSVP LSP's between P routers and LDP will be run between PE and P routers and tunneled over RSVP .
Please refer below link for detailed explanation:
https://www.juniper.net/documentation/en_US/release-independent/nce/topics/example/vpn-ldp-over-rsvp.html
Please mark my answer as accepted solution if the query is answered
Apart from LDP-over-RSVP tunneling, there is a few more use cases where P routers can be headends/tailends for RSVP LSP:
1/ hierarchical RSVP LSP a.k.a. OSPF forwarding adjacencies
https://www.juniper.net/documentation/en_US/junos/topics/usage-guidelines/mpls-configuring-a-hierarchy-of-rsvp-lsps.html
2/ LFA with RSVP LSP as backup paths
https://www.juniper.net/documentation/en_US/junos/topics/task/configuration/ospf-rvsp-lsp-backup-paths-configuring.html
3/ TI-FRR a.k.a. LFA with dynamic RSVP LSP a.k.a. LDP link protection
https://www.juniper.net/documentation/en_US/junos/topics/concept/ldp-link-protection-overview.html
HTH
ThxAlex