Local Protection in an MPLS Network

The JUNOS software implementation of Multiprotocol Label Switching (MPLS) provides several complementary mechanisms for protecting against Resource Reservation Protocol (RSVP)-signaled LSP failures, including path protection (primary and secondary paths), and local protection (fast reroute, link protection, and node-link protection). This chapter describes local protection supported by the JUNOS software. (See Table 6.)

The terms node and router are used interchangeably throughout this book.

Table 6: Local Protection Checklist

Local Protection Tasks	Command or Action
Local Protection Overview
One-to-One Backup Overview
Configuring and Verifying One-to-One Backup
Configure One-to-One Backup	[edit] edit protocols mpls [edit protocols mpls] set label-switched-path lsp-path-name to address set label-switched-path lsp-path-name fast-reroute (optional) set label-switched-path lsp-path-name primary      primary-name (optional) set path path-name address loose show commit
Verify One-to-One Backup	show mpls lsp ingress extensive show rsvp session
Many-to-One Link Protection (Facility Backup) Overview
Configuring and Verifying Link Protection
Configure Link Protection	[edit] edit protocols rsvp interface type-fpc/pic/port [edit protocols rsvp interface type-fpc/pic/port] set link-protection show top edit protocols mpls label-switched-path lsp-path-name [edit protocols mpls label-switched-path lsp-path-name] set link-protection show commit
Verify That Link Protection Is Up	show mpls lsp extensive show rsvp session detail show rsvp interface
Node-Link Protection Overview
Configuring and Verifying Node-Link Protection
Configure Node-Link Protection	[edit] edit protocols mpls label-switched-path lsp-path-name [edit protocols mpls label-switched-path lsp-path-name] set node-link-protection show edit protocols rsvp interface type-fpc/pic/port [edit protocols rsvp interface type-fpc/pic/port] set link-protection show commit Include the node-link-protection statement on any other ingress routers that have LSPs requiring use of the bypass path. Include the link-protection statement on routers with outgoing interfaces in the LSP.
Verify That Node-Link Protection Is Up	show mpls lsp show mpls lsp extensive show rsvp interface show rsvp interface extensive show rsvp session detail
Conclusion
Related Information