subnet mask
## Subnet Mask
Its dividing Network_OSI
into smaller inner networks In decimals is the sereies of ones and
zeros at the end(111111.11111.11111.0000) #alt-name /24 Classes
Interdoamin Routing (CIDR)(‘slach notation’) In order to calculate
this we sum up all the ones use cheat sheet >[!example]-
>
>>[!tip]- Cheat sheet >>
- Each subnet is identified by a unique network address and a subnet
mask, which is used to determine the range of IP addresses that
belong to that subnet.
- e.g.,255.255.255.0
- Used by the local device in conjunction with
IP to determnie what
subnet its on
- The subnet mask is not (ussualy transmited across the network)
- Used by the local device in conjunction with
IP to determnie what
subnet its on
- e.g.,255.255.255.0
Now we use VLSM instead of subnet classes
subnet construction >[!quote] defult gateway DHCP server