From: marvin greenlee (marvin@ccbootcamp.com)
Date: Thu Dec 23 2004 - 15:24:26 GMT-3
The router is still a layer 3 device.
If I had to swap cables when anyone wanted to do bridging on a router, or
configure a switchport as layer 3, I wouldn't work for a company that had 15
racks of hardware. ;)
- Marvin Greenlee, CCIE#12237, CCSI# 30483
Network Learning Inc
marvin@ccbootcamp.com
www.ccbootcamp.com (Cisco Training)
-----Original Message-----
From: cejackson1@comcast.net [mailto:cejackson1@comcast.net]
Sent: Thursday, December 23, 2004 10:08 AM
To: marvin greenlee; ccielab@groupstudy.com
Subject: RE: Cables types [bcc][faked-from] [html-rem]
What if you were briding across ethernet port on router?
-------------- Original message --------------
> In general, the easiest way to remember is based on the OSI layer of the
> device. If you are changing layers, you can use a straight cable. If the
> layers are the same, you would use a crossover cable.
>
> Router (layer 3) to PC (layer 3) - crossover
> Router (layer 3) to switch (layer 2) - straight
> Switch (layer 2) to switch (layer 2) - crossover
>
> Etc.
>
> One possible area of confusion with this general rule is the case of a
> multilayer switch like the 3550. If you are connecting a router to the
> switch, you would use a straight cable, even if the switchport is
configured
> as a layer 3 port.
>
>
>
> - Marvin Greenlee, CCIE#12237, CCSI# 30483
> Network Learning Inc
> marvin@ccbootcamp.com
> www.ccbootcamp.com (Cisco Training)
>
>
> -----Original Message-----
> From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf Of
> cejackson1@comcast.net
> Sent: Thursday, December 23, 2004 9:05 AM
> To: ccielab@groupstudy.com
> Subject: Cables types [bcc][faked-from]
> Importance: Low
>
> Does anyone know a good website or reference quide when using cross-over
> versus straight-thru cables. Example router to switch = straight thru,
> switch to switch cross-over.......hub to switch...
>
> thanks
>
> Cecil
>
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