Re: 3750s in the Core

The thing is that I don't know as I'd classify 500-600 users as a
"small" network. But like anything (the Joe's and the alleged sales
team) that has been pointed out, the great "it depends" comes into
play! I've been on networks with both sides. Less users needing more
throughput, and more users needing less throughput.

You don't design your network based on the number of users. While
that's PART of the criteria, it's not the most important part. What
will those users be doing? How is the "network" designed (L3 stuff).
Define your traffic flows accordingly.

What's the throughput between switches? What's the throughput
intra-switch? What's the available bandwidth via either stackwise or
uplinks? Do you care?

3750's a good switches. There's a lot of things they are not good at,
but if you don't need to use those things, then you honestly don't
care! If I'm going to drive to work and it's 1-2 miles each way, and
the weather is always perfect where I live, I'll probably buy a
bicycle. If it's 60 miles each way, and the weather sucks most of the
time, while a bicycle will indeed work, it's not the best choice!

Analyze what you are REALLY asking prior to worrying about the minutia.

Just my two cents.

*Scott Morris*, CCIE/x4/ (R&S/ISP-Dial/Security/Service Provider) #4713,

JNCIE-M #153, JNCIS-ER, CISSP, et al.

JNCI-M, JNCI-ER

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Ryan West wrote:
> I would have to agree with Joe and Joe as well. The 3750's are actually luxury switches for most of our customers (SMB) and more than enough to handle their core. One major area where they struggle is with PBR though. Even with the SDM adjusted, they just are not designed for that. I would have to check on the fabric of the individual 3750, but the stackwise forwards at 32gpbs and I believe the oversubscription on the 12 and 24 ports is quite low. Compare that to a 4500 (non E), where the oversubscription can reach 8:1.
>
> -ryan
>
>
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Received on Tue Jun 16 2009 - 13:54:45 ART