RE: Creating a sub-interface on a Fa1/0 port

From: Schulz, Dave (DSchulz@dpsciences.com)
Date: Thu Sep 15 2005 - 13:06:06 GMT-3


Yes, I mentioned that it was a router with NM card (switch module).
Originally, I was not aware that this was installed in the router. You
are correct...I was able to complete the step with using the following
(from memory)....

Switchport trunk encapsulation dot1q
Switchport mode trunk

Thanks!

Dave Schulz,
Email: dschulz@dpsciences.com

-----Original Message-----
From: Arun Arumuganainar [mailto:aarumuga@hotmail.com]
Sent: Thursday, September 15, 2005 11:59 AM
To: Nawaz, Ajaz; 'Lee Donald'; Tim; 'Mark Forest'; Schulz, Dave;
ccielab@groupstudy.com
Subject: Re: Creating a sub-interface on a Fa1/0 port

Cool ... So you are trying to configure on the switch !!!

Can you pls. provide us " show runn interface <switch prot number > " .
Well I would like to see if "no switchport" is enabled on it .

Pls. Note : dotlq subinterface can be configured only on routed ports .
Switch will not allow you to configure it on L2-ports !!!

For L2 ports you need to configure it as trunk and enable trunk
encapsulation as dot1q !!!

Could you pls. clarify if you are doing this on routed port or switch
port .

Thanks and Regards
Arun
----- Original Message -----
From: "Nawaz, Ajaz" <Ajaz.Nawaz@bskyb.com>
To: "'Lee Donald'" <Lee.Donald@t-systems.co.uk>; "Tim"
<ccie2be@nyc.rr.com>;
"'Mark Forest'" <mforest@inetiq.com>; "'Schulz, Dave'"
<DSchulz@dpsciences.com>; <ccielab@groupstudy.com>
Sent: Thursday, September 15, 2005 4:13 PM
Subject: RE: Creating a sub-interface on a Fa1/0 port

> Well the switch in qtn is also a router. So, I would imagine the
interface
> would behave just like a routed interface.
>
> Just thinking out loud...
>
> Ajaz Nawaz
>
>
>
> -----Original Message-----
> From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf
Of
Lee
> Donald
> Sent: 15 September 2005 11:45
> To: Tim; 'Mark Forest'; 'Schulz, Dave'; ccielab@groupstudy.com
> Subject: RE: Creating a sub-interface on a Fa1/0 port
>
> Tim,
>
> Ethernet sub-interfaces are for trunking, and to allow traffic from
more
> than 1 vlan down to the router.
> What would be the purpose of having sub interfaces on the switch?
>
> Regards
>
> Lee.
>
>
>
>
> -----Original Message-----
> From: Tim [mailto:ccie2be@nyc.rr.com]
> Sent: 15 September 2005 11:25
> To: 'Mark Forest'; 'Schulz, Dave'; ccielab@groupstudy.com
> Subject: RE: Creating a sub-interface on a Fa1/0 port
>
> Hey guys,
>
> Can a sub-interface, for example, fa0/1.1, be created on a switchport?
>
> I've never tried it but I can't see why that wouldn't be possible.
>
> I'd test it myself if I had a 3550 handy but I don't.
>
> TIA, Tim
>
> -----Original Message-----
> From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf
Of
Mark
> Forest
> Sent: Thursday, September 15, 2005 12:10 AM
> To: 'Schulz, Dave'; ccielab@groupstudy.com
> Subject: RE: Creating a sub-interface on a Fa1/0 port
>
> Dave,
>
> I have found that if you are in interface config mode then back out to
> global config mode then enter int fa1/0.x, this should work out for
you.
>
> mf
>
> -----Original Message-----
> From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf
Of
> Schulz, Dave
> Sent: Wednesday, September 14, 2005 6:36 PM
> To: ccielab@groupstudy.com
> Subject: Creating a sub-interface on a Fa1/0 port
>
> I am working on a lab and having a problem creating a subinterface in
a
> router (it won't let me enter "int fa1/0.1", for some reason). This
allows
> it on other routers. In order to create a trunk. Is there certain
router
> specifics that would prevent this. I am starting from a clean router.
> Thanks for any help.
>
> Dave
>
>



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