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Cisco Bug: CSCus16973 - Predictable and persistent assignment of mac address to L3 interfaces

Last Modified

Jan 30, 2017

Products (1)

  • Cisco Catalyst 3560 Series Switches

Known Affected Releases


Description (partial)

MAC address on the L3 interfaces might change after reload of the switch. If port security feature is enabled on remote L2 switch it might cause disconnection of the switch due to err-disable - security violation.

If the physical port became L3 (no switchport), if there are SVI interfaces already configured after reload MAC address of this physical L3 port and all SVI interfaces will change.
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