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Networking

aatif@tnext.ca
Level 1
Level 1

Hello, I work for ISP. We already have two /21 IP blocks on our network. I want to add one more /22 IP block on my network. I don't know if that is possible. How many IP blocks can we add to our Network..Any suggestions??

5 Replies 5

Leo Laohoo
Hall of Fame
Hall of Fame

Is this question for real or for school work?

aatif@tnext.ca
Level 1
Level 1

Actually i am trying to add 3rd IP block on our Network but some how i am unable to. I was wondering if there is a certain limit to add IP blocks. 


aatif@tnext.ca wrote:

Hello, I work for ISP. We already have two /21 IP blocks on our network. I want to add one more /22 IP block on my network. I don't know if that is possible. How many IP blocks can we add to our Network..Any suggestions??


 

Joseph W. Doherty
Hall of Fame
Hall of Fame
Are you asking about how many /22s can be obtained from a /21? If so, two. Are you asking about how many /22 can be added to a network already using two /21s? If so, generally as many that are available from unused allocatable address space.

aatif@tnext.ca
Level 1
Level 1
I actually meant if i could add one more /22 while i am already using two
/22 on my network. I am thankful that you have answered that already. But
somehow i am unable to advertise /22 on my network.

Joseph W. Doherty
Hall of Fame
Hall of Fame
Well normally, as previously noted, you should be able to advertise another /22. For additional help, though, you need to provide much more in the way of details.

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