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Cisco Bug: CSCtf25886 - %C5510-1-NO_RING_DESCRIPTORS DSP resets observed in 12.4(15)T12

Last Modified

Mar 09, 2018

Products (1)

  • Cisco IOS

Known Affected Releases

12.4(15)T12 12.4(15)T13 9.4(12)DSP

Description (partial)

Symptoms: Messages of the following sort are observed on console:

%C5510-1-NO_RING_DESCRIPTORS: No more ring descriptors available on slot 5 dsp 13.
%C5510-1-NO_RING_DESCRIPTORS: No more ring descriptors available on slot 3 dsp 17.
%C5510-1-NO_RING_DESCRIPTORS: No more ring descriptors available on slot 3 dsp 17.

The RST (ReSeT) counter column in the output of the <CmdBold>show voice dsp
detail<noCmdBold> command will show non-zero values for some Digital Signal
Processor (DSP) IDs, indicating that a DSP has reset itself.

Conditions: The symptom is observed on a Cisco Voice Gateway which is installed
with PVDM2 C5510-based DSP cards (PVDM2-8, PVDM2-16, PVDM2-32, PVDM2-48,
PVDM2-64, and AS5X-PVDM2-64) and configured for TDM-IP voice services. At
present this symptom has been observed with Cisco IOS Release 12.4(15)T12 and
default DSP firmware version 9.4.12, as well as when DSPware 9.4.10 or 9.4.11
is used in place of 9.4.12.
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