From: Scott Morris (swm@emanon.com)
Date: Sat Jun 17 2006 - 10:32:15 ART
In your first one, you aren't setting an access vlan (although you did set
native for your trunk) yet you aren't hard-coding the trunk mode. So if
there isn't a phone, you may have some issues.
In your second one, you aren't setting an encapsulation for your trunk so
you're relying on some magic along the way! While the 3550 will indeed do
DTP with the Cisco IP phone, it may or may not be something you desire to
do.
This part here doesn't have any indication about what the "voice vlan"
command does or says to the switch though! You do have your "switchport
priority extend cos" command correct, so if that's the part you were
concerned with, you're doing fine!
HTH,
Scott Morris, CCIE4 (R&S/ISP-Dial/Security/Service Provider) #4713, JNCIE
#153, CISSP, et al.
CCSI/JNCI
IPExpert CCIE Program Manager
IPExpert Sr. Technical Instructor
smorris@ipexpert.com
http://www.ipexpert.com
-----Original Message-----
From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf Of
Maximus
Sent: Saturday, June 17, 2006 9:24 AM
To: Cisco certification
Subject: i am still confused on Voice vlan
are they both the same ?
if my requirement is voice vlan is 10, data on 7, change only the
COS(802.1p) of data to 1
config 1
-----------
mls qos
!
interface FastEthernet0/7
switchport trunk encapsulation dot1q
switchport native vlan 7
switchport voice vlan 10
switchport priority extend cos 1
mls qos trust cos
config 2
--------------
mls qos
!
interface FastEthernet0/7
switchport access vlan 7
switchport voice vlan 10
switchport priority extend cos 1
mls qos trust cos
-- regards,Max
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