[c-nsp] vlan tagging question

[Chad Whitten]

Thanks for the reply.

The device can understand 802.1q and can tag/untag frames.  The cisco
is outside my control and I have very little experience with the
native vlan setting.  My thinking is that the cisco config should be
something like

switchport mode trunk
switchport trunk encapsulation dot1q
swtitchport allowed vlan 100,201
(some of that syntax may not be correct)

and that if I am doing tagging on the access device, the native vlan
part of the config is not needed

On Wed, May 14, 2008 at 7:50 AM, Jeff Cartier <jcartier at acs.on.ca> wrote:
> If the device is incapable of understanding IEEE 802.1Q then it will not
>  be able to recognize and interpret the tagged frames, and will only
>  understand the native/untagged vlans.  It should only be communicating
>  on the native vlan.
>
>
>
>  -----Original Message-----
>  From: cisco-nsp-bounces at puck.nether.net
>  [mailto:cisco-nsp-bounces at puck.nether.net] On Behalf Of Chad Whitten
>  Sent: Wednesday, May 14, 2008 8:44 AM
>  To: cisco-nsp at puck.nether.net
>  Subject: [c-nsp] vlan tagging question
>
>  I have a non-cisco access device connecting to a cisco 3750 via gigE.
>  The 3750 interface is set for 802.1q trunking with two vlans - 100 and
>  201.  Vlan 201 is the native vlan on the cisco interface.  Should the
>  access device be tagging packets on vlan 201 or leaving them untagged?
>
>  --
>  Chad Whitten
>  Metro Network Solutions
>  (601) 366-6630 Phone
>  (601) 366-6066 Fax
>  (601) 842-6804 Cellular
>  cwhitten at metronetsys.com
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>



-- 
Chad Whitten
Metro Network Solutions
(601) 366-6630 Phone
(601) 366-6066 Fax
(601) 842-6804 Cellular
cwhitten at metronetsys.com