What would be the proper summary address for these?

[Delmiro Campelo]

Hello support community,

I'm trying to write a summary network address for the ip address in red below, but they need to be separate from the ones in black, is this a proper summary route for these networks in red? 10.20.0.0/10 ?

IP Address	Binary 1st octet	Binary 2st octet	Binary 3rd octet	Binary 4th octet
10.0.0.0	00001010	00000000	00000000	00000000
10.2.0.0	00001010	00000010	00000000	00000000
10.3.0.0	00001010	00000011	00000000	00000000
10.20.0.0	00001010	00010100	00000000	00000000
10.30.0.0	00001010	00011110	00000000	00000000
10.31.0.0	00001010	00011111	00000000	00000000
10.32.0.0	00001010	00100000	00000000	00000000
10.40.0.0	00001010	00101000	00000000	00000000
10.41.0.0	00001010	00101001	00000000	00000000
10.44.0.0	00001010	00101100	00000000	00000000
10.45.0.0	00001010	00101101	00000000	00000000
10.48.0.0	00001010	00110000	00000000	00000000
10.50.0.0	00001010	00110010	00000000	00000000
10.51.0.0	00001010	00110011	00000000	00000000
10.52.0.0	00001010	00110100	00000000	00000000
10.53.0.0	00001010	00110101	00000000	00000000
10.55.0.0	00001010	00110111	00000000	00000000
10.56.0.0	00001010	00111000	00000000	00000000
10.61.0.0	00001010	00111101	00000000	00000000
10.63.0.0	00001010	00111111	00000000	00000000
10.70.0.0	00001010	01000110	00000000	00000000
10.71.0.0	00001010	01000111	00000000	00000000
10.72.0.0	00001010	01001000	00000000	00000000
10.73.0.0	00001010	01001001	00000000	00000000
10.74.0.0	00001010	01001010	00000000	00000000
10.75.0.0	00001010	01001011	00000000	00000000
10.76.0.0	00001010	01001100	00000000	00000000
10.77.0.0	00001010	01001101	00000000	00000000
10.78.0.0	00001010	01001110	00000000	00000000
10.79.0.0	00001010	01001111	00000000	00000000

[rothomas2]

What about the subnet mask? Are all this /24?

[Akash Agrawal]

Hi,

I think you need to split aggregation in to below three subnets. 

10.16.0.0/12

10.32.0.0/11
10.64.0.0/10

10.20.0.0/10 is not a valid prefix. 

Please don't forget to rate this post if it has been helpful

-akash

[milan.kulik]

Hi Akash,

correct, but

10.64.0.0/12

would be enough.

Bets regards,

Milan

[Akash Agrawal]

Hi Milan,

Would 10.64.0.0/12 cover 10.20.0.0? I don't think so, i will cover 10.64.0.0 to 10.79.0.0 if i consider only 2nd octet.

Regards,

Akash

[milan.kulik]

Hi,

sorry, I should have been clearer:

10.64.0.0/12 should be enough instead 10.64.0.0/10.

So

10.16.0.0/12

10.32.0.0/11
10.64.0.0/12

is the complete solution.

Best regards,

Milan

[paul driver]

Hello

I have it as this:

10.0.0.0/14
10.20.0.0/16
10.30.0.0/15
10.32.0.0/11
10.64.0.0/12

res

Paul
 

[Delmiro Campelo]

I actually have a totally different result, the ip addresses in black 10.0.0.0, 10.2.0.0, and 10.3.0.0 will be separate from the red ip addresses in red. it would basically be all /12 so I can keep those summary separated. look ok?

IP block 10.0.0.0/12 - range 10.0.0.1 - 10.15.255.254
IP block 10.20.0.0/12 - range 10.16.0.1 - 10.31.255.254
IP block 10.32.0.0/12 - range 10.32.0.1 - 10.47.255.254
IP block 10.48.0.0/12 - range 10.48.0.1 - 10.63.255.254
IP block 10.70.0.0/12 - range 10.64.0.1 - 10.79.255.254

Thanks,
Delmiro

[paul driver]

Hello

You original query was to summarise on the subnets you posted , hence the specific summarization.

If you mean to include the other subnets not shown then a more generic addressing would also be applicable.

res

Paul

[Delmiro Campelo]

I ended up using /12 which is a block of 16 subnets for my summary, it accomplished the goal. .

10.0.0.0/12
10.16.0.0/12
10.32.0.0/12
10.48.0.0/12
10.64.0.0/12

Thanks everyone for helping with this.