[nflug] Router vs Layer 3 switch

[Jesse Jarzynka]

Guess I'll throw in the Cisco point of view again. Cisco's motto is
"switch when you can, route when you must". Which makes sense since
switches are fast and routers are intelligent and slow. Although the
lowest end L3 Cisco switches are the 3560s in which the 24 port 10/100 is
about $5k MSRP. Of course the 3560s do all you want and much much more
like rate limiting (very cool) and QOS etc., but that's up to your budget.

Switching Performance -
http://www.cisco.com/web/partners/downloads/765/tools/quickreference/switchperformance.pdf

> Ah!  That makes sense...Thanks!
>
> <span style="font-family:comic sans ms;">Richard Hubbard </span>
> ATTO Technology Inc
>
> ----- Original Message ----
> From: Darin Perusich <Darin.Perusich at cognigencorp.com>
> To: nflug at nflug.org
> Sent: Monday, December 10, 2007 1:04:48 PM
> Subject: Re: [nflug] Router vs Layer 3 switch
>
> ICS = Internet Software Consortium, the develop BIND and DHCP.
>
> Richard Hubbard wrote:
>> OK, that was my suspicion...but I still have one question...
>> ISC?
>>
>> Thanks!
>>
>> <span style="font-family:comic sans ms;">Richard Hubbard </span>
>> ATTO Technology Inc
>>
>> ----- Original Message ----
>> From: Darin Perusich <Darin.Perusich at cognigencorp.com>
>> To: nflug at nflug.org
>> Sent: Monday, December 10, 2007 12:55:23 PM
>> Subject: Re: [nflug] Router vs Layer 3 switch
>>
>> A layer 3 switch is a router and much cheaper then an actual router.
>  I
>> have a 24 port 3com SS 4924 1Gb switch as the backbone "router" of my
>> network with the individual network segments broken up using VLAN's.
>> This has been in production for 3 years now and I'm very pleased with
>> it. The only thing I'd change looking back at things is I would have
>> gone with a Cisco Layer3 switch instead of the 3com. About once or
>>  twice
>> a year I run into some unexplained networking issues which requires
>>  that
>> I reboot the switch. Maybe 3Com's fixed this by now but I don't know,
>>  we
>> had an existing 3com infrastructure so I stuck with them.
>>
>> Do your DHCP on a dedicated server where you can run ISC, you can
>> forward all the traffic across network segments from the Layer3
>  switch
>> just fine, it's what I do.
>>
>> Richard Hubbard wrote:
>>> I'm in a situation where "Theoritical" vs "Reality" is about to hit
>>> home.
>>>
>>> I have a network of over 300 computers, all on the same subnet.  I
>>> need to break it up.
>>>
>>> The traditional method is some kind of router.  Which is fine, but
>>> when you ask Cisco about routers that can handle 1Gb, all the
>>> employees at Cisco start shopping for boats.
>>>
>>> It has been pointed out to me, that what I am looking for is a Layer
>>> 3 switch.  Which I have never actually touched before.  So, is there
>>> anyone here that has worked with layer 3 switches?  Which brand?
>>>
>>> What I would like...
>>>
>>> Web front end, ability to configure subnets. DHCP server capability
>>> 1Gb/sec speed 16-24 ports. Inexpensive.  If I wanted expensive, I'd
>>> buy a bunch of Cisco boxen.
>>>
>>> What I don't need, yet, Router-router communications. However, due
>  to
>>> the size of the network, I can imagine eventually requiring RIP. I
>>> don't think that should be too hard (most $50 household size boxes
>>> have RIP)
>>>
>>> Any thoughts?
>>>
>>> Thanks!
>>>
>>> <span style="font-family:comic sans ms;">Richard Hubbard </span>
>  ATTO
>>> Technology Inc
>>>
>>>
>>>
>>>
>>>
>>
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>
> --
> Darin Perusich
> Unix Systems Administrator
> Cognigen Corporation
> 395 Youngs Rd.
> Williamsville, NY 14221
> Phone: 716-633-3463
> Email: darinper at cognigencorp.com
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