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Cisco Bug: CSCul61997 - Mac-Security:Mac address is not cleared from the table after timeout

Last Modified

Apr 17, 2019

Products (21)

  • Cisco ME 3600X Series Ethernet Access Switches
  • Cisco ASR 901-6CZ-FS-D Router
  • Cisco ASR 901-6CZ-F-D Router
  • Cisco ASR 901S-4SG-F-D Router
  • Cisco ME 3600X-24TS-M Switch
  • Cisco ASR 901-4C-FT-D Router
  • Cisco ASR 901S-2SG-F-AH Router
  • Cisco ASR 901-6CZ-F-A Router
  • Cisco ASR 901S-2SG-F-D Router
  • Cisco ASR 901-6CZ-FT-A Router
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Known Affected Releases

15.4(2)S

Description (partial)

Symptoms:
Cisco Metro Ethernet 3600 Series devices running an affected version of IOS are affected by a configuration dependent denial of service issue.  An 
adjacent attacker that has the ability to connect directly to a port configured for port security could consume all MAC entries allowed on the port.  This is 
an expected result; Due to an error the learned MAC addresses may not expire causing the port to be inaccessible to new MAC addresses until cleared 
by an administrator.

Conditions:
Cisco Metro Ethernet 3600 Series devices running an affected version of Cisco IOS Software.
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Bug Details Include

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