Max range between values based on category column (variable range sizes and categories)

G

GregDz11

New Member
Joined
Mar 13, 2017
Messages
14
Right now I've got a large list of IP addresses due to using /24 subnet breakdowns, however I want to reduce my subnets to the tightest possible subnet to accommodate IPs in the range. To this I need to know the difference between the minimum and maximum of the values within the /24 range. My data looks like the following:

[TABLE="width: 500"]
<tbody>[TR]
[TD]IP SUBNET[/TD]
[TD]IP[/TD]
[TD]4th_Oct[/TD]
[/TR]
[TR]
[TD]192.168.1.0/24[/TD]
[TD]192.168.1.1[/TD]
[TD]1[/TD]
[/TR]
[TR]
[TD]192.168.1.0/24[/TD]
[TD]192.168.1.24[/TD]
[TD]24[/TD]
[/TR]
[TR]
[TD]192.168.1.0/24[/TD]
[TD]192.168.1.158[/TD]
[TD]158[/TD]
[/TR]
[TR]
[TD]192.168.2.0/24[/TD]
[TD]192.168.2.2[/TD]
[TD]2[/TD]
[/TR]
[TR]
[TD]192.168.2.0/24[/TD]
[TD]192.168.2.4[/TD]
[TD]4[/TD]
[/TR]
</tbody>[/TABLE]


And I'd like to know the following two columns:
[TABLE="width: 500"]
<tbody>[TR]
[TD]IP SUBNET[/TD]
[TD]IP[/TD]
[TD]4th_Oct[/TD]
[TD]Difference in Sub between min and Max[/TD]
[TD]Min IP[/TD]
[/TR]
[TR]
[TD]192.168.1.0/24[/TD]
[TD]192.168.1.1[/TD]
[TD]1[/TD]
[TD]157[/TD]
[TD]192.168.1.1[/TD]
[/TR]
[TR]
[TD]192.168.1.0/24[/TD]
[TD]192.168.1.24[/TD]
[TD]24[/TD]
[TD]157[/TD]
[TD]192.168.1.1[/TD]
[/TR]
[TR]
[TD]192.168.1.0/24[/TD]
[TD]192.168.1.158[/TD]
[TD]158[/TD]
[TD]157[/TD]
[TD]192.168.1.1[/TD]
[/TR]
[TR]
[TD]192.168.2.0/24[/TD]
[TD]192.168.2.2[/TD]
[TD]2[/TD]
[TD]2[/TD]
[TD]192.168.2.2[/TD]
[/TR]
[TR]
[TD]192.168.2.0/24[/TD]
[TD]192.168.2.4[/TD]
[TD]4[/TD]
[TD]2[/TD]
[TD]192.168.2.2[/TD]
[/TR]
</tbody>[/TABLE]


With that I can easily calculate the best subnet to use
[TABLE="width: 500"]
<tbody>[TR]
[TD]IP SUBNET[/TD]
[TD]IP[/TD]
[TD]4th_Oct[/TD]
[TD]Difference in Sub between min and Max[/TD]
[TD]Min IP[/TD]
[TD]Best Subnet[/TD]
[/TR]
[TR]
[TD]192.168.1.0/24[/TD]
[TD]192.168.1.1[/TD]
[TD]1[/TD]
[TD]157[/TD]
[TD]192.168.1.1[/TD]
[TD]/24[/TD]
[/TR]
[TR]
[TD]192.168.1.0/24[/TD]
[TD]192.168.1.24[/TD]
[TD]24[/TD]
[TD]157[/TD]
[TD]192.168.1.1[/TD]
[TD]/24[/TD]
[/TR]
[TR]
[TD]192.168.1.0/24[/TD]
[TD]192.168.1.158[/TD]
[TD]158[/TD]
[TD]157[/TD]
[TD]192.168.1.1[/TD]
[TD]/24[/TD]
[/TR]
[TR]
[TD]192.168.2.0/24[/TD]
[TD]192.168.2.2[/TD]
[TD]2[/TD]
[TD]2[/TD]
[TD]192.168.2.2[/TD]
[TD]/31[/TD]
[/TR]
[TR]
[TD]192.168.2.0/24[/TD]
[TD]192.168.2.4[/TD]
[TD]4[/TD]
[TD]2[/TD]
[TD]192.168.2.2[/TD]
[TD]/31[/TD]
[/TR]
</tbody>[/TABLE]


Any help will be appreciated!
 

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I share 5 formulas in cells D2, E2, F2, G2 and H2
The formulas E2 and F2 are array formulas.
Copy the 5 formulas down.
The result will be in columns G and H.

<table border="1" cellspacing="0" style="font-family:Calibri,Arial; font-size:11pt; background-color:#ffffff; "> <colgroup><col style="font-weight:bold; width:30px; " /><col style="width:101.7px;" /><col style="width:93.15px;" /><col style="width:61.78px;" /><col style="width:91.25px;" /><col style="width:47.52px;" /><col style="width:42.77px;" /><col style="width:76.04px;" /><col style="width:76.04px;" /></colgroup><tr style="background-color:#cacaca; text-align:center; font-weight:bold; font-size:8pt; "><td > </td><td >A</td><td >B</td><td >C</td><td >D</td><td >E</td><td >F</td><td >G</td><td >H</td></tr><tr style="height:19px ;" ><td style="font-size:8pt; background-color:#cacaca; text-align:center; " >1</td><td style="background-color:#92d050; ">IP SUBNET</td><td style="background-color:#92d050; ">IP</td><td style="background-color:#92d050; ">4th_Oct</td><td style="background-color:#ffc000; ">Segment</td><td style="background-color:#ffc000; ">Min</td><td style="background-color:#ffc000; ">Max</td><td style="background-color:#ffc000; ">Diference</td><td style="background-color:#ffc000; ">Min IP</td></tr><tr style="height:19px ;" ><td style="font-size:8pt; background-color:#cacaca; text-align:center; " >2</td><td >192.168.1.0/24</td><td >192.168.1.1</td><td style="text-align:right; ">1</td><td >192.168.1</td><td style="text-align:right; ">1</td><td style="text-align:right; ">158</td><td style="text-align:right; ">157</td><td >192.168.1.1</td></tr><tr style="height:19px ;" ><td style="font-size:8pt; background-color:#cacaca; text-align:center; " >3</td><td >192.168.1.0/24</td><td >192.168.1.24</td><td style="text-align:right; ">24</td><td >192.168.1</td><td style="text-align:right; ">1</td><td style="text-align:right; ">158</td><td style="text-align:right; ">157</td><td >192.168.1.1</td></tr><tr style="height:19px ;" ><td style="font-size:8pt; background-color:#cacaca; text-align:center; " >4</td><td >192.168.1.0/24</td><td >192.168.1.158</td><td style="text-align:right; ">158</td><td >192.168.1</td><td style="text-align:right; ">1</td><td style="text-align:right; ">158</td><td style="text-align:right; ">157</td><td >192.168.1.1</td></tr><tr style="height:19px ;" ><td style="font-size:8pt; background-color:#cacaca; text-align:center; " >5</td><td >192.168.2.0/24</td><td >192.168.2.2</td><td style="text-align:right; ">2</td><td >192.168.2</td><td style="text-align:right; ">2</td><td style="text-align:right; ">4</td><td style="text-align:right; ">2</td><td >192.168.2.2</td></tr><tr style="height:19px ;" ><td style="font-size:8pt; background-color:#cacaca; text-align:center; " >6</td><td >192.168.2.0/24</td><td >192.168.2.4</td><td style="text-align:right; ">4</td><td >192.168.2</td><td style="text-align:right; ">2</td><td style="text-align:right; ">4</td><td style="text-align:right; ">2</td><td >192.168.2.2</td></tr></table><br /><table style="font-family:Arial; font-size:10pt; border-style: groove ;border-color:#00ff00;background-color:#fffcf9; color:#000000; "><tr><td ><b>Formeln der Tabelle</b></td></tr><tr><td ><table border = "1" cellspacing="0" cellpadding="2" style="font-family:Arial; font-size:9pt;"><tr style="background-color:#cacaca; font-size:10pt;"><td >Zelle</td><td >Formel</td></tr><tr><td >D2</td><td >=TRIM(LEFT(SUBSTITUTE(B2,".",REPT(" ",12),3),11))</td></tr><tr><td >E2</td><td >{=MIN(IF($D$2:$D$6=$D2,$C$2:$C$6))}</td></tr><tr><td >F2</td><td >{=MAX(IF($D$2:$D$6=$D2,$C$2:$C$6))}</td></tr><tr><td >G2</td><td >=F2-E2</td></tr><tr><td >H2</td><td >=INDEX($B$2:$B$6,MATCH(E2,$C$2:$C$6,0))</td></tr></table></td></tr></table>


Array formulas
Entered with Ctrl+Shift+Enter. If entered correctly, Excel will surround with curly braces {}.
Note: Do not try and enter the {} manually yourself
 
Upvote 0
silly question, when I enter the array formula do I highlight the whole column, enter the formula, hit the combo keys or enter it into 1 cell (ctrl+shift+enter) then drag that down the column?
 
Upvote 0
GregDz11 said:
silly question, when I enter the array formula do I highlight the whole column, enter the formula, hit the combo keys or enter it into 1 cell (ctrl+shift+enter) then drag that down the column?
Click to expand...

You do it in the first cell and then copies down
 
Upvote 0
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