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Will I have a problem with broadcast traffic with 300+ hosts on the same physical network

PNRT
PNRT asked
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Last Modified: 2014-05-10
Hi Experts, I plan to have 300+ hosts on the same physical network using    192.168.1.x  255.255.0.0    and    192.168.2.x    255.255.0.0      Will I experience excessive broadcast traffic?  Is their a better way to do it?   Many thanks
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Miftaul HICT consultant
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Commented:
You definitely did not mean /16 aka 255.255.0.0 right.

/23 aka 255.255.254.0 is fine.

Enable portfast and storm control on the switchports.

My network is /22 and thats working just fine.

Author

Commented:
Sorry, yes I did mean 255.255.0.0  Please advise the problems?
Miftaul HICT consultant
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Commented:
/16 will give you about 65000 hosts. The larger the number of hosts are, the difficult it becomes to maintain network performance.

You can limit the broadcast using a feature called storm control. 300 host is still good in a single broadcast domain, but definitely not 65000.

Author

Commented:
Thanks, yes, that was my question, would 300 not be too many because of broadcasts.   Would it not be better to separate them to separate physical networks?
ICT consultant
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Commented:
This one is on us!
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