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Cisco Bug: CSCtf07589 - UDLD fails with empty-echo due to cache overflow

Last Modified

Feb 23, 2018

Products (12)

  • Cisco Nexus 7000 Series Switches
  • Cisco Nexus 7000 10-Slot Switch
  • Cisco MDS 9124 Multilayer Fabric Switch
  • Cisco MDS 9222i Multiservice Modular Switch
  • Cisco MDS 9216i Multilayer Fabric Switch
  • Cisco MDS 9134 Multilayer Fabric Switch
  • Cisco MDS 9509 Multilayer Director
  • Cisco MDS 9506 Multilayer Director
  • Cisco Nexus 7000 18-Slot Switch
  • Cisco MDS IBM Blade Switch
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Known Affected Releases

4.2(2a) 4.2(3)

Description (partial)

Symptom: 
Sustained and repeated flaps of the port-channel members over a long time results in error-disabling of the members due to UDLD empty-echo.  

Conditions:
This situation occurs when there is a sustained and repeated toggling of the port-channel members over a long period of time in the network.
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Bug Details Include

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  • Status
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