IPs , Netmasks and Broadcast.

Eric Schuele e.schuele at computer.org
Thu Sep 15 08:12:47 PDT 2005


Eric Schuele wrote:
> Grant Peel wrote:
> 
>> Hi All,
>>
>> Now I am really confused.
>>
>> Up until this morning I thought I had a good handle on when I need to 
>> use the real Netmask and Broadcast.
>>
>> For example, If I have 3 servers, and my upline asigns me a block of 
>> 128 addresses, for the first ip used (from this block) on each server, 
>> I would need to specify the IP, true netmask and a broadcase. Then, 
>> when using more IPs from that block, I would use a 255.255.255.255 
>> netmask and a broadcast equal to the IP.
> 
> 
> Google
>   CIDR
>   IP Netmask
>   IP broadcast
> 
> HTH.
> 

Hmmm... I may have had a tad too much coffee this morning.  I think I 
read over your OP too quick and probably have not answered the question 
properly.  Its all good reading... but probably not applicable to your 
problem.

>>
>> Today, I was in this exact position where I was tring to add an (the 
>> first one one THAT machine, from that block) IP from a block that is 
>> almost completely used up on another server, and the one I was adding 
>> it to would not take it. When I tried adding it with a 255.255.255.255 
>> netmask, and a broadcast eaqual to the amount of IPs from that block - 
>> it worked.
>>
>> this is on a FreeBSD 4.10 machine.
>>
>> WHich way is correct for 4.7 and higher?
>>
>> -Grant
>>
>>
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> 
> 


-- 
Regards,
Eric


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