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Cisco Bug: CSCtd77786 - chdlc is out of sync with IM

Last Modified

May 16, 2018

Products (1)

  • Cisco Carrier Routing System

Known Affected Releases


Description (partial)

If the bundle interface flaps as cHDLC MA is resyncing, then the cHDLC does not send a DPC to the platform, which means that traffic will not be forwarded on the bundle. For instance, this can occur if a bundle flaps during RP failover.

All traffic using the bundle interface will be dropped, "show interfaces" will show the line protocol state as UP, but "show chdlc interfaces" will show it as DOWN.

This is a corner case that has only been seen once, and can only occur on bundle interfaces if a bundle interface flaps during resync.
Present in all releases prior to 3.9.1
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