RE: Voice VLAN and data traffic with and without trunking

From: James.Jackson@broadwing.com
Date: Thu Jun 26 2003 - 17:14:35 GMT-3

The access port does not become a trunk port. Instead of accepting untagged
and 802.1Q with a tag that matches its Access VLAN, it now additionally
accepts 802.1Q with a tag that matches Voice VLAN.

HTH
James

-----Original Message-----
From: Cristian Henry H [mailto:chenry@reuna.cl]
Sent: Thursday, June 26, 2003 2:57 PM
To: beda jain
Cc: Jackson, James (DS Engineering); ccielab@groupstudy.com
Subject: Re: Voice VLAN and data traffic with and without trunking
modeco nfigured

But, in the case 2 the "switchport voice vlan 101" command instruct the
IP Phone to forward all voice traffic through the VLAN 101 using 802.1q
frames, so, Does it mean the port get mode trunking with encap 802.1q
automatically?

beda jain ha escrito:
>
> If you do switchport mode access in case 2, it will block all 802.1q
packet.
>
> so both the config will work fine, but in lab i will go for case 1.
because
> some extra line is ok.
> and i will do spanning-tree port-fast trunk
>
> Thanks,
> Beda
>
> At 12:57 PM 6/26/2003 -0500, James.Jackson@broadwing.com wrote:
> >The two options look fine. As I understand it, in case 2, the port is not
> >configured as a trunk however it is still able to process the 802.1Q
packets
> >coming from IPphone.
> >
> >James
> >
> >-----Original Message-----
> >From: Cristian Henry H [mailto:chenry@reuna.cl]
> >Sent: Thursday, June 26, 2003 12:48 PM
> >Cc: ccielab@groupstudy.com
> >Subject: Voice VLAN and data traffic with and without trunking mode
> >configured
> >
> >
> >Dear all,
> >
> >If the requirement is to put the voice traffic (from IP Phone) in VLAN
> >101 and the data traffic (from behind IP Pone)in VLAN 102, what do you
> >think about the following cases/configurations?, Do both ones the same?
> >
> >
> >1) With 802.1q trunking mode configured
> >
> >interface FastEthernet0/10
> > switchport trunk encapsulation dot1q
> > switchport trunk native vlan 102
> > switchport mode trunk
> > switchport voice vlan 101
> > no ip address
> > spanning-tree portfast
> >!
> >
> >2) Without 802.1q trunking mode configured
> >
> >interface FastEthernet0/10
> > switchport access vlan 102
> > switchport voice vlan 101
> > spanning-tree portfast
> >!
> >In this 2) case, Does the port get automatically trunking mode 802.1q?,
> >is necesary to add " switchport trunk encapsulation dot1q"?, and if the
> >port is trunk, does the "switchport access vlan 102" works well?
> >
> >
> >Thanks in advance.
> >
> >--
> >Cristian E. Henry
> >REUNA
> >
> >E-mail: chenry@reuna.cl
> >Fono: 56-2-3370336
> >
> >
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-- 
Cristian E. Henry
REUNA

E-mail: chenry@reuna.cl
Fono: 56-2-3370336
 +++The information transmitted is intended only for the person or entity to
which it is addressed and may contain confidential and/or privileged
material.  Any review, retransmission, dissemination or other use of, or
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