From: Guyler, Rik (rguyler@shp-dayton.org)
Date: Thu Oct 13 2005 - 13:41:00 GMT-3
Stefan, you certainly can hardcode the port to be a trunk. By default it's
set to dynamic desirable so if a Dot1Q-capable device is plugged in a trunk
will form. Since you may not have only phones plugged into a single switch,
this feature more or less keeps your port configs consistent across the
switch but still be able to dynamically determine if it needs to trunk for a
phone or be in access mode for a host device.
Rik
-----Original Message-----
From: Stefan Grey [mailto:examplebrain@hotmail.com]
Sent: Thursday, October 13, 2005 11:38 AM
To: ccielab@groupstudy.com
Subject: Voice VLANS
Hello,
While learning this I read that when a phone is connecte to the 3550 switch
it will automatically form an 802.1q trunk to the phone.
interface fa0/1
switchport voice vlan 2
sw acc vlan 3
Such a question appeared in my head... Would it be then ok to configure in
such situation statical trunk configuration?? ... like
int fa0/1
sw trunk enc dot1q
sw mode trunk
If yes is that used in some particular situations in the real networks (or
it is always automatically detected).
And if yes wouldn't be it just mixing of commands of different switchport
modes??
sw trunk ..commands are the commands of the trunk mode of the port and sw
acc command would be the access command of the switch.
Thanks,
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