Difference between 3550 and 3750

Answered Question
Apr 3rd, 2010

Hi all, I am interested in purchasing a couple of 3550 switches for my home lab, however, I was just wanting to know what the difference between them and the 3750's?

Also, do the 3550's support NBAR?

Thanks.

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Correct Answer by Jon Marshall about 6 years 8 months ago

parians wrote:

Thanks for the information.

Functionality wise, what does the 3750 do that the 3550 can't?

I have heard SRR, NAT and NBAR, but was wanting to know, is there anything else?

The 3750 does not support NAT or NBAR. Of the catalyst switches only the 6500 supports NAT.

The 3750 is simply a more recent switch with greater thoughput although the features are not identical. For a lab the 3550 switches would be fine as you can run most of what you would need to do in a lab. Have a look at the 2 datasheets if you haven't already seen them -

3550 datasheet

3750 datasheet

Jon

Correct Answer by Reza Sharifi about 6 years 8 months ago

Hi,

3750s are stackable but 3550s are not.

3750s have higher backplane speed then 3550s

3550s are end-of-life

3750s are more expensive

Overall, for lab use 3550s are more economical then 3560s and 3750s

Here is list of Cisco products that support NBAR:

Q.What platforms and Cisco IOS®Software releases support NBAR?

A.NBAR is supported on the following platforms:

– Cisco 800 Series Routers

– Cisco 1700 Series Modular Access Routers

– Cisco 1800 Series Integrated Services Routers

– Cisco 2600XM Series Router

– Cisco 2800 Series Integrated Services Routers

– Cisco 3700 Series Multiservice Access Routers

– Cisco 3800 Series Integrated Services Routers

– Cisco 7100 Series VPN Routers

– Cisco 7200 Series Routers

– Cisco 7300 Series Routers

– Cisco 7500 Series Routers

HTH

Reza

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Correct Answer
Reza Sharifi Sat, 04/03/2010 - 21:10

Hi,

3750s are stackable but 3550s are not.

3750s have higher backplane speed then 3550s

3550s are end-of-life

3750s are more expensive

Overall, for lab use 3550s are more economical then 3560s and 3750s

Here is list of Cisco products that support NBAR:

Q.What platforms and Cisco IOS®Software releases support NBAR?

A.NBAR is supported on the following platforms:

– Cisco 800 Series Routers

– Cisco 1700 Series Modular Access Routers

– Cisco 1800 Series Integrated Services Routers

– Cisco 2600XM Series Router

– Cisco 2800 Series Integrated Services Routers

– Cisco 3700 Series Multiservice Access Routers

– Cisco 3800 Series Integrated Services Routers

– Cisco 7100 Series VPN Routers

– Cisco 7200 Series Routers

– Cisco 7300 Series Routers

– Cisco 7500 Series Routers

HTH

Reza

parians Sun, 04/04/2010 - 15:52

Thanks for the information.

Functionality wise, what does the 3750 do that the 3550 can't?

I have heard SRR, NAT and NBAR, but was wanting to know, is there anything else?

Correct Answer
Jon Marshall Sun, 04/04/2010 - 16:27

parians wrote:

Thanks for the information.

Functionality wise, what does the 3750 do that the 3550 can't?

I have heard SRR, NAT and NBAR, but was wanting to know, is there anything else?

The 3750 does not support NAT or NBAR. Of the catalyst switches only the 6500 supports NAT.

The 3750 is simply a more recent switch with greater thoughput although the features are not identical. For a lab the 3550 switches would be fine as you can run most of what you would need to do in a lab. Have a look at the 2 datasheets if you haven't already seen them -

3550 datasheet

3750 datasheet

Jon

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