Subnetting

  • Thread starter Thread starter Steve
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Steve

What would be the best scenario. My company is currently
running a /24 bit subnet and is about to run out of IP's.
Correct me if I am wrong, but If I switch to a /23 bit
subnet that will give me an extra 254 IP's correct? If
this is the case can I just delete my current scope amd re-
add a new one using the same IP scheme but change it to
a /23 bit?

Please Help
 
You could, but as you increase the number of machines above 250 or 300 your
performance may start to suffer. You may be better off adding another
address block with a /24 mask and just have two subnets of 254 each.
 
I agree but we are adding maybe 25-30 more machines. I
just want to make sure I do this correct, I need to
delete the scope and re-add it as a /23 bit which would be
255.255.254.0, then switch all my cisco switches subnets
to the new subnet mask.
-----Original Message-----
You could, but as you increase the number of machines above 250 or 300 your
performance may start to suffer. You may be better off adding another
address block with a /24 mask and just have two subnets of 254 each.

--

Phillip Windell [MCP, MVP, CCNA]
www.wandtv.com


What would be the best scenario. My company is currently
running a /24 bit subnet and is about to run out of IP's.
Correct me if I am wrong, but If I switch to a /23 bit
subnet that will give me an extra 254 IP's correct? If
this is the case can I just delete my current scope amd re-
add a new one using the same IP scheme but change it to
a /23 bit?

Please Help
Click to expand...


.
Click to expand...
 
Steve said:
I agree but we are adding maybe 25-30 more machines. I
just want to make sure I do this correct, I need to
delete the scope and re-add it as a /23 bit which would be
255.255.254.0, then switch all my cisco switches subnets
to the new subnet mask.
Click to expand...

Correct. Change the scope (delete/recreate), then change all static non-DHCP
devices. Then do a renew/refresh to update the network settings on the
clients that use DHCP. There may be no way to avoid at least a limited
amount of downtime.
 
Thank you. I have been trying to figure out this
situation for weeks
-----Original Message-----
I agree but we are adding maybe 25-30 more machines. I
just want to make sure I do this correct, I need to
delete the scope and re-add it as a /23 bit which would be
255.255.254.0, then switch all my cisco switches subnets
to the new subnet mask.
Click to expand...

Correct. Change the scope (delete/recreate), then change all static non-DHCP
devices. Then do a renew/refresh to update the network settings on the
clients that use DHCP. There may be no way to avoid at least a limited
amount of downtime.

--

Phillip Windell [MCP, MVP, CCNA]
www.wandtv.com


.
Click to expand...
 
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