Cisco Support Community
cancel
Showing results for 
Search instead for 
Did you mean: 
Announcements

Welcome to Cisco Support Community. We would love to have your feedback.

For an introduction to the new site, click here. And see here for current known issues.

New Member

What would be the proper summary address for these?

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 octetBinary 2st octetBinary 3rd octetBinary 4th octet 
10.0.0.000001010000000000000000000000000
10.2.0.000001010000000100000000000000000
10.3.0.000001010000000110000000000000000
10.20.0.000001010000101000000000000000000
10.30.0.000001010000111100000000000000000
10.31.0.000001010000111110000000000000000
10.32.0.000001010001000000000000000000000
10.40.0.000001010001010000000000000000000
10.41.0.000001010001010010000000000000000
10.44.0.000001010001011000000000000000000
10.45.0.000001010001011010000000000000000
10.48.0.000001010001100000000000000000000
10.50.0.000001010001100100000000000000000
10.51.0.000001010001100110000000000000000
10.52.0.000001010001101000000000000000000
10.53.0.000001010001101010000000000000000
10.55.0.000001010001101110000000000000000
10.56.0.000001010001110000000000000000000
10.61.0.000001010001111010000000000000000
10.63.0.000001010001111110000000000000000
10.70.0.000001010010001100000000000000000
10.71.0.000001010010001110000000000000000
10.72.0.000001010010010000000000000000000
10.73.0.000001010010010010000000000000000
10.74.0.000001010010010100000000000000000
10.75.0.000001010010010110000000000000000
10.76.0.000001010010011000000000000000000
10.77.0.000001010010011010000000000000000
10.78.0.000001010010011100000000000000000
10.79.0.000001010010011110000000000000000
9 REPLIES
New Member

 What about the subnet mask?

 

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

Cisco Employee

 Hi,I think you need to split

 

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

 

Hi Akash, correct, but10.64.0

Hi Akash,

 

correct, but

10.64.0.0/12

would be enough.

 

Bets regards,

Milan

Cisco Employee

Hi Milan, Would 10.64.0.0/12

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

 

Hi, sorry, I should have been

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


 

HelloI have it as this:10.0.0

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
 

Please don't forget to rate any posts that have been helpful. Thanks.
New Member

I actually have a totally

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

 

HelloYou original query was

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

Please don't forget to rate any posts that have been helpful. Thanks.
New Member

I ended up using /12 which is

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.

104
Views
4
Helpful
9
Replies
CreatePlease login to create content