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Cisco Bug: CSCut54688 - mLDP FRR Duplicated packets received when shutdown primary interface

Last Modified

Aug 06, 2018

Products (1)

  • Cisco Carrier Routing System

Known Affected Releases

5.1.1.MCAST 5.3.2.BASE

Description (partial)

During mLDP FRR, duplicate packets are seen for 100 ms after the initial 50ms drop due to link down. The expectation is to see the duplicates for a very short duration, when the MergePoint adds the new (MBB) LSP and removes the old LSP.

mLDP FRR should be enabled, either with P2P-TE-backup tunnels or with LFA backup LSPs
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