RE: Does ISL Support...........?

From: Daniel_Steyn@Dell.com
Date: Mon Nov 13 2006 - 12:59:22 ART


I should have said ingress untagged traffic

-----Original Message-----
From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf Of
Daniel_Steyn@dell.com
Sent: Monday, November 13, 2006 9:30 AM
To: alexeim@orcsoftware.com; electroheart143@yahoo.com
Cc: ccielab@groupstudy.com
Subject: RE: Does ISL Support...........?

ISL does support a native VLAN in which ingress untagged VLANs are then
tagged with the vlan specified.

-----Original Message-----
From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf Of
Alexei Monastyrnyi
Sent: Monday, November 13, 2006 9:19 AM
To: Rajiv
Cc: ccielab@groupstudy.com
Subject: Re: Does ISL Support...........?

Hi.

As per Q1, since ISL adds its specific L2 header to each frame, all
frames have to have it, otherwise the frame should be considered as
invalid. In this sense there should be no untagged frames for ISL.

As per Q2, if I remember right, both protocols support up to 4095 VLANs.

HTH
A.

Rajiv wrote:
> Hi all,
>
> I want to ask that Does ISL supports the processing of untagged
frames?
>
> Also does 802.1q supports fewer VLANs than ISL?
>
> Regards,
> Rajiv
>
>
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