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Subnet Masks
Traffic
Traffic
RouterRouter
Subnet 1 Subnet 2
Network ID Host ID
. . .
Network ID Host ID
. . .
Network ID Host ID
. . .Subnet ID
Network ID Host ID
. . .Subnet ID 2
Network ID Host ID
. . .Subnet ID 3
Network ID Host ID
. . .Subnet ID 1
192.168.1.100
Subnet Mask
192.168.1.100
Subnet Mask
192.168.1. 100
Subnet Mask
192.168.1. 100
Structure of Subnet Masks
. . .
Structure of Subnet Masks
255
Structure of Subnet Masks
0
Structure of Subnet Masks
. . .255 0 0 0
. . .255 255 0 0
. . .255 255 255 0
Structure of Subnet Masks
. . .255 0 0 0
. . .255 255 0 0
. . .255 255 255 0.
Network ID Host ID
. . .255 255 0 0
. . .255 0 255 0
Structure of Subnet Masks
Default Subnet Masks
IP Address Class IP Address Subnet Mask Network ID Host ID
Default Subnet Masks
IP Address Class IP Address Subnet Mask Network ID Host ID
A w.x.y.z 255.0.0.0 w.0.0.0 x.y.z
Default Subnet Masks
IP Address Class IP Address Subnet Mask Network ID Host ID
A w.x.y.z 255.0.0.0 w.0.0.0 x.y.z
B w.x.y.z 255.255.0.0 w.x.0.0 y.z
Default Subnet Masks
IP Address Class IP Address Subnet Mask Network ID Host ID
A w.x.y.z 255.0.0.0 w.0.0.0 x.y.z
B w.x.y.z 255.255.0.0 w.x.0.0 y.z
C w.x.y.z 255.255.255.0 w.x.y.0 z
Custom Subnet MasksCreating Additional Subnets
. . .172 16 2 200
. . .255 255 255 0
. . .IP Address
Subnet Mask
Custom Subnet MasksCreating Additional Subnets
. . .172 16 2 200
. . .255 255 255 0
. . .IP Address
Subnet Mask
Custom Subnet MasksCreating Additional Subnets
. . .. . .255 255 255 0Subnet Mask
. . .172 16 2 0Network ID
172 16 2 200. . .IP Address
Default Subnet Mask
Custom Subnet MasksCreating Additional Subnets
. . .. . .255 255 255 0Subnet Mask
. . .172 16 2 0Network ID
172 16 2 200. . .IP Address
. . .. . .255 255 0 0Subnet Mask
172 16 2 200. . .IP Address
Default Subnet Mask
Custom Subnet MasksCreating Additional Subnets
. . .. . .255 255 255 0Subnet Mask
. . .172 16 2 0Network ID
172 16 2 200. . .IP Address
. . .. . .255 255 0 0Subnet Mask
172 16 2 200. . .IP Address
Default Subnet Mask
Custom Subnet MasksCreating Additional Subnets
. . .. . .255 255 255 0Subnet Mask
. . .172 16 2 0Network ID
172 16 2 200. . .IP Address
. . .. . .255 255 0 0Subnet Mask
172 16 2 200. . .IP Address
. . .172 16 0 0Network ID
Subnet Masks