A true router, 2621/3640/7200, is not usually considered
a L3 switch. A 6500 with an MSFC module installed can be
is a L3 switch and will perform L2/L3 routing and switching.

A 6500 without the MSFC module is just a large high speed switch,
capable of only L2 switching.

A layer 3 switch usually routes the first packet in the flow of data
and then switches the rest in the switching hardware. This is why L3
routing/switching is quite a bit faster. A traditional router will use
IOS software to determine routes and the switch each packet between the
interfaces in the router.


Larry Letterman
Cisco Systems
[EMAIL PROTECTED] 


-----Original Message-----
From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]]On Behalf Of
John Green
Sent: Thursday, March 14, 2002 10:50 PM
To: [EMAIL PROTECTED]
Subject: Layer 3 switch ? [7:38358]


Is it ok to refer to a "router" as a Layer 3 switch ?

cisco 6500 was referred to as a Layer 3 switch.

question: does it(6500) have routing capabilities ?
-----------------------------------------------------

to connect to different vlans one needs a router.
right ?? (as shown below)
 switchA --------ROUTER-------switchB

but say some nodes connected to switchB are on the
vlan of switchA. so now to connect switchA and switchB
can router be ok ?
------------------------------------------------------

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