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 Post subject: dupicated mac address
PostPosted: Mon May 14, 2012 12:10 pm 
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Joined: Mon May 14, 2012 10:34 am
Posts: 1
hi :

i am new to GN3, i had three 3600 routers with NM-16ESW module installed. when i checked mac addresses of three devices, all mac addresses of ports were the same, was it normal ?

i.e
Sw1#show int f1/1
FastEthernet1/1 is up, line protocol is up
Hardware is Fast Ethernet, address is cc00.0de0.f101 (bia cc00.0de0.f101)
Sw3#show int f1/1
FastEthernet1/1 is up, line protocol is up
Hardware is Fast Ethernet, address is cc03.0de0.f101 (bia cc03.0de0.f101)

f1/1 on both switchs share the same mac. why is that ?
isn't mac supposed to be unique?




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 Post subject: Re: dupicated mac address
PostPosted: Mon May 14, 2012 12:56 pm 
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Joined: Tue Mar 06, 2012 8:48 am
Posts: 12
see again your mac-address, they are really different !



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Mario
Network Admin

CCNA certified.
Cisco SNAF courses studied (Securing Networks With ASA Foundation)
Cisco CCNP route courses in April 2012.


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