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Cisco Bug: CSCtb34234 - %ATTN-3-SYNC_TIMEOUT during periods of oversubscription with MLPPP

Last Modified

Mar 02, 2018

Products (1)

  • Cisco ASR 1000 Series Aggregation Services Routers

Known Affected Releases


Description (partial)


During periods of high traffic rates to MLPPP bundles with a QoS policy applied
%ATTN-3-SYNC-TIMEOUT warnings have been observed.

For this particular situation with MLPPP, the %ATTN-3-SYNC-TIMEOUT is
purely a cosmetic issue.

This issue has typically been seen when a given QoS class is being 
oversubscribed or when a deep queue-limit has been assigned to a QoS 
class queue and again the class is oversubscribed.
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Bug Details Include

  • Full Description (including symptoms, conditions and workarounds)
  • Status
  • Severity
  • Known Fixed Releases
  • Related Community Discussions
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