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Cisco Bug: CSCul48949 - show port-security interface shows -ve MAC address counter

Last Modified

Jan 27, 2017

Products (4)

  • Cisco Nexus 7000 Series Switches
  • Cisco Nexus 7000 10-Slot Switch
  • Cisco Nexus 7000 18-Slot Switch
  • Cisco Nexus 7000 9-Slot Switch

Known Affected Releases

5.2(9) 5.2(9)S71 6.2(5.45)S2

Description (partial)

Symptom:
The output of "show port-security interface <interface>" shows configured MAC addresses as a negative number.

N7K# show port-security interface po 82
Port Security              : Enabled
Port Status                : Secure UP
Violation Mode             : Shutdown
Aging Time                 : 0 mins
Aging Type                 : Absolute
Maximum MAC Addresses      : 5
Total MAC Addresses        : 3
Configured MAC Addresses   : -19
Sticky MAC Addresses       : 0
Security violation count   : 0

N7K# show port-security interface eth4/15
Port Security              : Enabled
Port Status                : Secure UP
Violation Mode             : Shutdown
Aging Time                 : 0 mins
Aging Type                 : Absolute
Maximum MAC Addresses      : 1
Total MAC Addresses        : 1
Configured MAC Addresses   : -1
Sticky MAC Addresses       : 0
Security violation count   : 0
N7K#

Conditions:
This has been seen on Nexus 7000s running 5.2.9 and 6.2.2.
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