Switch LAG setup

I have 2 switches ( 2 - 3Com) which are connected via 2 ports using LAG. I'm getting another 48 port Netgear swich this week and want to create a LAG between the other 2 switches. Do I just create a LAG to one of those switches, or to both of them? If I create to one of the 3com's, do I give it the same LAG identity (LAG 1) or do I create another LAG identity (LAG 2)? If I create a LAG to both 3com switches, do I use LAG 2 and LAG 3 or just LAG 1?
Also, all 3 switches are 1GB switches (3com's with 24 ports and Netgear with 48 ports), should I use more than 2 ports for each LAG, or should I use more ports per each LAG? Thanks in advance.
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You can create a couple of LAGs between the new switch and each of the others but while it will build in some  redundancy you would then have to pay close attention to your spanning tree settings because you will now have a loop in your topology. It will also take up two more ports on each switch for the redundant LAG. A single LAG to just one of the other switches will work fine.

You need to make it a new lag id for each lag connected so the second one would be LAG2, third one LAG3, etc. If you are manually configuring them vs using LACP you could get away with using IDs that are not unique but it would get very confusing if you were troubleshooting what is LAG2 on one switch while the other end is LAG1 on another switch.

I would go with just 2 links in the LAG and monitor its utilization before adding links to it.

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CMilneAuthor Commented:
Great thanks for your reply, I'll give the 2 LAGS to a central switch a try. Thanks again.
CMilneAuthor Commented:
How many ports per LAG do you recommend (currently I have 2 ports on the first LAG)? Is there a standard of 2 per 24 ports?
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