Mac Address 0201.0000.0000

Answered Question
Jan 21st, 2009
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i wish know this MAC ADDRESS what is it and i what know what do , my switch know this mac by two ports ??

Correct Answer by Roberto Salazar about 8 years 2 months ago

See what kind of device is connected to 4/7 and see if that device somehow connects back to the switch connected on 1/1. The mac is not assigned to a manufacturer so it could be a statically assigned mac on that host, or a traffic generator such as ixia, etc.

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Giuseppe Larosa Wed, 01/21/2009 - 08:27
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Hello Uzziel,


this is probably a valid MAC address but associated to a VIP of some server:


what is connected out those two ports ?


this is can be a case of NIC teaming with some mismatch between server configuration and switch configuration


Hope to help

Giuseppe


Uzziel Sevilla ... Wed, 01/21/2009 - 10:47
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hello Giuseppe , thanks for all, i comment you in this ports i have conect a pc windows , and learn this mac adderess 0201.0000.0000 by 4/7 and 1/1 trunk

Correct Answer
Roberto Salazar Wed, 01/21/2009 - 11:14
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See what kind of device is connected to 4/7 and see if that device somehow connects back to the switch connected on 1/1. The mac is not assigned to a manufacturer so it could be a statically assigned mac on that host, or a traffic generator such as ixia, etc.

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