Joel, Can you share the doc that you read? CIPC binds to and uses the network adapter that you specify under the Network Preferences configuration, it does not use CDP to determine which interface/IP Address to use.
Administration Guide for CIPC version 2.1 http://www.cisco.com/en/US/docs/voice_ip_comm/cipc/2_1/english/administration/guide/cag21ovr.html#wp1043898 Voice quality can be compromised on an IP device by data traffic. Because Cisco IP Communicator is a software-based phone instead of a hardware phone, you cannot solve this problem by isolating voice-over-IP traffic to an auxiliary VLAN. Instead, you must modify QoS parameters in the network so that voice data traffic is prioritized over generic data traffic. Jeff Knuckle -----Original Message----- From: ccie_voice-boun...@onlinestudylist.com [mailto:ccie_voice-boun...@onlinestudylist.com] On Behalf Of Joel Jose Sent: Thursday, August 13, 2009 4:41 AM To: ccie_voice@onlinestudylist.com Subject: [OSL | CCIE_Voice] cipc gets voice vlan through "switchport voicevlan" ?? hy people, does cipc get vlan through cdp?? i have read in cisco.com that it does indeed happen... but i have tried many times and could not make it happen. when i have to put it in the voice vlan i have to give "access vlan command" to the switchport. one reason the voice vlan command doesnt work may be because the pc port doesnt know how to tag them...(i've tried only on older switches so need to make the port trunk manually)... may be newer switch models have no such problems(but dual vlan is still a mini trunk right so does pc port know how to deal with it?)... i have noticed that when i install cipc, it also installs many networking stuffs like qos and cdp support..(check network properties)... joel. -- "it's not the years in your life that count. It's the life in your years." Abraham Lincoln _______________________________________________ For more information regarding industry leading CCIE Lab training, please visit www.ipexpert.com _______________________________________________ For more information regarding industry leading CCIE Lab training, please visit www.ipexpert.com