From : https://supportforums.cisco.com/discussion/10697231/cisco-model-naming-convention

Does anyone know where to find a posting of what the parts of a cisco model name mean?

ex. WS-C3560G-24TS

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I've never seen an official doc on it, but as a partner, I occasionally see a quote that has something regarding it. For your example,

WS=Workgroup Switch

C=Cisco

3560=Hardware Platform

G=Gigabit

24=Number of ports (not always accurate because it doesn't always count uplink ports. It's usually the number of ports for access.)

T=Ethernet I think, however there is also P which is for PoE.

S=Standard Image

These can sometimes vary so don't take this as gospel, but it should be pretty close.

Hope it helps.


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Ex: WS-C2960X-48FPS-L     (这个示例更加准确)
WS = Switch
C = Catalyst

2960= Model
X = Series ( X *OR* XR )

48 = How many Ethernet 10/100/1000 ports (24 or 48 )

FP = Identify if there is POE or not, and also Identify the Watt of POE if exist. ( F = 740w *OR*  L= 320w , P= POE )  If no POE then we will use (T) Instead  

S = number of SFPs  ( it is used to identify number of SFPs , S= 4 SFP  *OR*  D= 2 SFP+ )

-L = IOS Feature set ( for X series :  -L = LAN BASE *OR* -LL = LAN lite ) , ( For XR : -IL = IP lite) 
 

NOTE: We have 2 Exceptions for this concept:

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1- WS-C2960X-24PSQ-L : Watt not mentioned,S=4SFP , Q is a new symbol. 
This Switch have only 2 SFP and 2 1000BASE-T , Its is also have POE on just 8 ports with 92w.

2- WS-C2960X-48TS-LL : Although It supposed to have 4 SFP referring to the S symbol, But it has only 2 SFP.  ( When the IOS is -LL , Then there are only 2 SFP  even if we use the S symbol )


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国内的文章也不错:

http://wenku.baidu.com/link?url=9y9dQAgX6jUuD8SivBJbS9gUv2IXlTV86cYDD_409QTpG_Bs24hLEnhX8elCNl08MHeth9aZPp1GEGVocKRxRKt_ogpsa7hnksJVHxhFl-K