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Connecting uplinks

What actually are the 23rd and 24th ports on a switch for whcih are labelled 23T or 24T ? Can both these ports be uplinked to another switch or only one ?
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which model network switch ?.23T,24T means it for connecting normal RJ 45 jack port.instead of T may be tit will be P referers Power over ethernet RJ port.Instead of T may be X refers SFP port.
some times 23,24,47,48 port will use as a trunk port.may be it will share with SFP port.that case either SFP ports or 23 T,24 T port .only one will work at a time.
discoveranotherAuthor Commented:
Thanks for that info.  So lets say i have 3 switches for simplicity and lets say each has 23T & 24T.  I cant link switch A & C to B's 23T & 24T ports ?  

'A' would have to go to B's 23T OR 24T and C would have to link up to another port on 'B' other than a 'T' port ? Hope makes sense.

If so, why have two 'T' ports ?
1.if you have to make a ring network .How you will make with one port?.that time you need two uplink port.( some switches 4 up link port is available.some core switches 24,48 and more up link available)
2.If you have high traffic in your switch you can combine two uplink port.
and there are so many reasons.
As a standard almost all venter providing two uplink port.

Thank you.
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