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rogergoudiaby

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Class A ip instead of class C

Well I am using class C ip in my network and actually I running out of space. I do not want to subnet kinda too much work. Can I just use A class A ip in my network to be able to accomodate more computer in my network. If yes do I need a particular router? What are the downside of using class A instead of class C
Thank you
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Ernie Beek
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shubhanshu_jaiswal

According to Cisco, there should not be more than 500 users in one subnet....you can have /23 subnet...if you go beyond that..network will be slow coz of broadcast traffic...
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I wouldn't even go 512,...Cisco's CCNA material when I got my CCNA said that Ethernet looses efficiency around 250-300.  If you ran 512 most likely your 100mbps LAN would run like a 10mbps LAN or if it was a Gig LAN it would probably only perform like it was 100mbps.
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Nobody seems to have asked yet, but what's your network architecture? I don't know why you say sub-netting is too much work, but in general, unless you're running a massively parallel cluster, it's actual likely to be time saving and performance enhancing. How many routers/switches are you dealing with? What type/models? Are the users organized differently than the physical location that prevents logical grouping? What's your expected maximum users/nodes for the foreseeable future? The answer is going to be different if it's under 1000 versus over 10,000.


This question has been classified as abandoned and is being closed as part of the Cleanup Program. See my comment at the end of the question for more details.