I noticed that on my 4006, I could only have isl enabled on the first 2 gige
ports. It took me 2 calls to tac to wor this out, by default all were
dot1q..

Hope this helps..

-----Original Message-----
From: Mark Johnson [mailto:[EMAIL PROTECTED]] 
Sent: Monday, 23 December 2002 10:21 AM
To: [EMAIL PROTECTED]
Subject: Re: ISL & 802.1q in one switch [7:59512]


Yes, it is possible...  It is dependant upon the type of switch you are
using...  If it is a 3550, 2950, 4000, etc... You would do

switchport mode trunk
switchport trunk encapsulation (dot1q or isl)

This is off the top of my head, so verify the exact syntax...  

Not all switches support both so you will need to check your hardware and
software...

Mark
-------Original Message-------
From: "[EMAIL PROTECTED]" 
Sent: 12/19/02 04:09 AM
To: [EMAIL PROTECTED]
Subject: ISL & 802.1q in one switch [7:59512]

> 
> Hi folks,

Does anybody have experience with using ISL en 802.1q within the same
switch. I have ISL trunk between my access and distribution layer. Now I
want to connect a firewall on my access switch with 802.1q trunking
protocol. Is it possible? if the answer is YES, should I change anything in
my configuration? My firewall talks 802.1q with the access switch and the
vlan's should go from access to distribution switch which talk ISL.

thanks,
Mehrdad
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