10.10.0.0/13

[ttymon]

Gents
could anyone explain to me why the router accept 10.10.0.0/13
as a valid host ?? my specific question is why does it accept the 0

many thanks

[DonB]

You are most likely thinking that since the address ends in a 0 then it is a network address right?

However the /13 indicates a block of 8 in the second octet. So the address 10.10.0.0/13 is in the 10.8.0.0 - 10.15.255.255 subnet.

if this does not make sense, study the section on subnetting again.

[ttymon]

Hi Don,

Thank you very much for your explanation, sure it made sense
the 0 confused me a lot.

thanks

[gabrielshorn]

Yup. What matters is not whether the address ends with a decimal zero, but that there is at least one binary '1' in the host portion of the address.

[ccnp]

DonB explain it right you are just confusing the IP Address concept

[gabrielshorn]

I was agreeing with DonB and just added that a valid host address needs to have at least one binary 1 on the host side of the address. There was a typo that might have caused some confusion that is now fixed.