Multi-domain support

Unanswered Question
Oct 30th, 2008
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I want to connect an IP phone and a host to the same port using the 802.1x multi-domain option but I came across a problem.


According to the website the command was added from 12.2(35)SE ( http://www.cisco.com/en/US/customer/docs/switches/lan/catalyst3750/software/release/12.2_40_se/command/reference/cli1.html#wp2754673 )


I'm running version 12.2(25r)SEE4 and I'm able to set the multi-domain configuration but the IP phone isn't functioning.


When I check my ACS server, I see successful authentications and when I check the dot1x details, the port is authenticated in the VOICE VLAN.... but I can't get an IP address.


Is dot1x multi-domain support in this version I'm using or not ?

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bwilmoth Wed, 11/05/2008 - 07:24
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You can try enabling MAB (MAC Authentication Bypass) in 3750 switch with the version “v12.2(37)SE1” and with the same image file to make the ip phone to get the ip address.. If your IP phone doesn't comes up with MAB then either configure the access VLAN of port with the ID of voice VLAN, or connect a PC to the IP phone.

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