MAC inconsistancy

Answered Question

hi,

we have a NTP server that is directly connected to one of our dist layer switch 6500. When I do a show ip arp, it gives me a MAC, but when I do a show mac- interface on that interface, it gives me a different MAC. How so? I mean, how can traffic deliver to that NTP server?


dsw2# sh ip arp 10.10.1.1

Protocol Address Age (min) Hardware Addr Type Interface

Internet 10.10.1.1 0 00a0.6901.60c8 ARPA FastEthernet5/2


dsw2#sh mac- int fa5/2

Legend: * - primary entry


vlan mac address type learn ports

------+----------------+--------+-----+--------------------------

* --- 0013.5fd7.ac0a static No Router


Thanks,


Han



Correct Answer by Giuseppe Larosa about 7 years 11 months ago

Hello Han,

this second entry is static:

or manually configured or part of port security configuration


vlan mac address type learn ports

------+----------------+--------+-----+--------------------------

* --- 0013.5fd7.ac0a static No Router


being static this MAC hasn't been learned on the port

learn = no


Hope to help

Giuseppe


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Correct Answer
Giuseppe Larosa Fri, 03/13/2009 - 03:09

Hello Han,

this second entry is static:

or manually configured or part of port security configuration


vlan mac address type learn ports

------+----------------+--------+-----+--------------------------

* --- 0013.5fd7.ac0a static No Router


being static this MAC hasn't been learned on the port

learn = no


Hope to help

Giuseppe


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