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New Member

IP addressing and subnets

I was wondering if anyone knew if I could use a subnet mask of 255.255.255.128 with a network number of 10.107.128.xxx I believe I cannot use this mask with a Class C address but since this is a class A address I though I might be able to. I want to have two subnets each with 126 addresses. These address will be split between two office each with a Cisco 3620 router.

Thanks,

Scott Graham

3 REPLIES
New Member

Re: IP addressing and subnets

u can have two subnets as follows:-

10.107.128.0/25 and 10.107.128.128/25.Each of these two subnets contains 126 host addresses.

Rgds

Amit

Caltiger.com

amtiger0@yahoo.com

New Member

Re: IP addressing and subnets

It will give you 131072 subnets and 126 hosts and is a class A IP. And 255.255.255.128 will work with a class C IP

New Member

Re: IP addressing and subnets

A 255.255.255.128 work with a Class C address.. The only thing is that you need the "ip subnet-zero" command in the router in order to get that working.

-JJ

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