CCIE Pursuit Blog

June 8, 2009

Core Knowledge Question of the Day: 08 June 2009

Given the output below, how long will it take for a MAC address to age out?

Rack1SW1(config-if)#do sh port-security int f0/4
Port Security              : Enabled
Port Status                : Secure-down
Violation Mode             : Shutdown
Aging Time                 : 0 mins
Aging Type                 : Absolute
SecureStatic Address Aging : Disabled
Maximum MAC Addresses      : 1
Total MAC Addresses        : 0
Configured MAC Addresses   : 0
Sticky MAC Addresses       : 0
Last Source Address:Vlan   : aaaa.bbbb.cccc:1
Security Violation Count   : 0

Highlight for answer: By setting ‘switchport port-security aging’ to 0(the default), aging is disabled and the MAC address will never age out.

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2 Comments »

  1. A MAC address won’t age out because the port it’s port security enabled -> aging time = absolute – it will never age out. 🙂

    Comment by Octavian — June 11, 2009 @ 6:30 am | Reply

  2. Given the output below, how long will it take for a MAC address to age out? – 0mins

    Comment by jith — June 25, 2009 @ 2:56 am | Reply


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