Difference Between Static and Secure MAC Addresses on Catalyst 2950

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May 18th, 2007
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Can anyone please explain the difference between 'static' and 'secure' MAC addresses as can be configured in the MAC table of a Catalyst 2950 series switch with the commands :-


static :-

mac-address-table static hw-addr [interface] interface-id [vlan] vlan-id


secure :-

mac-address-table secure address hw-addr interface interface-id vlan vlan-id


These are the commands as described in the Cisco IOS Release 12.4 documentation.


The course I am following also describes the Catalyst 1900 commands 'mac-address-table permanent' and 'mac-address-table restricted static' and I can understand how these work. The latter restricts forwarding of frames to the specified port to be from only certain source ports. I cannot see any parallel with the 2950 commands above.


Thanks in advance for any advice.






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smalkeric Fri, 05/25/2007 - 05:53
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Difference Between Static and Secure MAC Addresses on Catalyst 2950 are following:

mac-address-table secure : Adds a secure address entry to the address table


mac-address-table static : Adds a static address entry to the address table


If you want to know more please click following URL:


http://www.cisco.com/en/US/docs/switches/lan/catalyst2950/software/release/12.1_11_ea1/command/reference/cli1.html#wp1022304



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