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Cisco Bug: CSCuj42672 - MCAST 100% traffic loss with RIB failure on ISSU 3.2.5 to 3.4.1SG

Last Modified

Jan 29, 2017

Products (1)

  • Cisco IOS

Known Affected Releases


Description (partial)

ISSU from 3.2.5 to 3.4.1 and back can cause this error appear after this no hardware entries for mfib are created and all the multicast traffic will be black holed.

ISSU from any release prior to 3.3.0SG / 15.1(1)SG to 3.3.0SG / 15.1(1)SG or above.

The messages may also appear:
Sep 24 11:02:47.201 PDT: %MRIB_PROXY-3-MRIB_LC_FAILED_IPC_OPEN: STANDBY:LC in slot 3 failed to open IPC port to RP, error = no such port. Verify MRIB updates are being distributed to this LC. 
Sep 24 11:02:47.201 PDT: %MRIB_PROXY-2-MRIB_INTERNAL: STANDBY:The unrecoverable error "Slot %d: LC port ipc init failed, error = %d" occurred in the MRIB-IPC subsystem.
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