SYSTEM AND METHOD PROVIDING SECURED CONTEXTS IN MPLS LFIB

摘要

A system, method and apparatus for enabling validation of packets received from a label switched router (LSR) via a label switched path (LSP) wherein an LSR assigning LSP label/FEC bindings further associates a respective epoch label with each binding, the advertised bindings and associated epoch labels being included within transmitted packets to enable verification of received packets by matching included Epoch label to the Epoch label originally associated with the packet LSP label.

主权项

1. A method for enabling validation of packets received from a label switched router (LSR) via a label switched path (LSP), the method comprising:
by an assigning LSR, associating each of at least one LSP label to forwarding equivalency class (FEC) bindings with a respective Epoch Label; by the assigning LSR, storing each label/FEC binding and respective Epoch Label in a Label Forwarding Information Base (LFIB); and by the assigning LSR, including, within each Label Mapping Message (LMM) advertising a label/FEC binding via a label distribution protocol (LDP), the respective Epoch Label; wherein an LSP labeled packet including an Epoch label not associated with the LSP label is deemed invalid.