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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

3.5.0.BASE

Description (partial)

Description:
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.

Symptom:
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.

Conditions:
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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Bug Details Include

  • Full Description (including symptoms, conditions and workarounds)
  • Status
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