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PCEP
If the session to the PCE times out, the router acting as a PCC keeps the last
successfully programmed path provided by the PCE until the session to the PCE is
re-established. Any subsequent change to the state of an LSP is synchronized at the
time the session is re-established.
When a PCEP session to a peer times out or closes, the rate at which the PCEP
speaker attempts the establishment of the session is subject to an exponential
back-off mechanism.
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MPLS Guide
3HE 18686 AAAB TQZZA
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