From: yu chunyan (yuchunyan@hotmail.com)
Date: Fri Sep 19 2003 - 17:51:30 GMT-3
But if it works in access mode. How does switch distingush traffics from ip
phone and Pc?
Bin
>From: "Joe Martin" <jmartin@capitalpremium.net>
>Reply-To: "Joe Martin" <jmartin@capitalpremium.net>
>To: "McClure, Allen" <Allen.McClure@Yum.com>, "CCIE GroupStudy"
><ccielab@groupstudy.com>
>Subject: RE: Cat3550 voice vlan
>Date: Tue, 16 Sep 2003 16:22:26 -0600
>
>Allen,
>
>From the following URL,
>http://www.cisco.com/univercd/cc/td/doc/product/lan/c3550/12114ea1/3550scg/s
>wvoip.htm#1030825
>
>"You should configure voice VLAN on switch access ports."
>
>This tells me that voice VLAN config does not need trunk commands.
>
>Also, nowhere in the Voice VLAN section of the 3550 config guide does it
>show trunk commands configured on voice vlan ports.
>
>HTH,
>
>Joe Martin
>CCIE #12035
>
>-----Original Message-----
>From: nobody@groupstudy.com [mailto:nobody@groupstudy.com]On Behalf Of
>McClure, Allen
>Sent: September 16, 2003 4:00 PM
>To: McClure, Allen; Shawn Yang; ccielab@groupstudy.com
>Subject: RE: Cat3550 voice vlan
>
>
>Perhaps I shouldn't have assumed a PC. With a phone only it uses CDP to
>figure it out on an access port, correct?
>
>A repost or link to an authoritative explanation would be helpful for me
>as well. I've been following the list for a long time and never felt
>like anyone nailed it. I could've easily missed it however.
>
>Allen G. McClure
>CCNP/CCDP/MCSE
>Yum! Brands, Inc.
>Sr. Network Analyst
>allen.mcclure@yum.com
>
>
>
>
>
>-----Original Message-----
>From: McClure, Allen
>Sent: Tuesday, September 16, 2003 4:53 PM
>To: 'Shawn Yang'; ccielab@groupstudy.com
>Subject: RE: Cat3550 voice vlan
>
>
>They're wrong.
>
>I would add native vlan configuration for untagged data (PC) packets (a
>reasonable assumption), although the requirement doesn't specify a PC
>connected to the phone.
>
>I'd love to hear more comments on this... I've been wrestling with the
>"right" way to answer this question for quite some time.
>
>Allen G. McClure
>CCNP/CCDP/MCSE
>Yum! Brands, Inc.
>Sr. Network Analyst
>allen.mcclure@yum.com
>
>
>
>-----Original Message-----
>From: Shawn Yang [mailto:syang@bitfone.com]
>Sent: Tuesday, September 16, 2003 1:22 PM
>To: ccielab@groupstudy.com
>Subject: Cat3550 voice vlan
>
>
>Hi, people,
>
>Here is one question in Ipexpert 4.0, appendix H.
>
>(For Cat3550)
>There is a Cisco 7960 IP phone connected to fa 0/15, configure the port
>as if the phone will be forwarding its voice traffic with 802.1q
>information. Voice vlan is 100.
>
>My answer:
>
>mls qos
>
>int fa 0/15
> swi trunk encap dot1q
> swi mode trunk
> swi voice vlan 100.
> mls qos trust cos
>
>The solution:
>
>int fa 0/15
> swi mode access
> swi voice vlan 100
>
>I am having problem accepting this solution. Should a voice port have to
>be a trunk port? Because it has to carry at least two vlans, voice, and
>data? also "mls qos" is not enabled...
>
>Anyone can help me?
>
>Shawn
>
>***Get your CCIE and a FREE vacation: Shop.GroupStudy.com***
>_______________________________________________________________________
>Please help support GroupStudy by purchasing your study materials from:
>shop.groupstudy.com
>
>Subscription information may be found at:
>http://www.groupstudy.com/list/CCIELab.html
>
>
>This communication is confidential and may be legally privileged. If you
>are not the intended recipient, (i) please do not read or disclose to
>others, (ii) please notify the sender by reply mail, and (iii) please
>delete
>this communication from your system. Failure to follow this process may be
>unlawful. Thank you for your cooperation.
>
>***Get your CCIE and a FREE vacation: Shop.GroupStudy.com***
>_______________________________________________________________________
>Please help support GroupStudy by purchasing your study materials from:
>shop.groupstudy.com
>
>Subscription information may be found at:
>http://www.groupstudy.com/list/CCIELab.html
>
>***Get your CCIE and a FREE vacation: Shop.GroupStudy.com***
>_______________________________________________________________________
>Please help support GroupStudy by purchasing your study materials from:
>shop.groupstudy.com
>
>Subscription information may be found at:
>http://www.groupstudy.com/list/CCIELab.html
This archive was generated by hypermail 2.1.4 : Wed Oct 01 2003 - 07:24:32 GMT-3