Subnetting Class C using Anding-2

Subnetting Class C Addresses-Handout Show your work here PREVIOUSLY WE FIGURED OUT THE NETWORK ID MECHANICALLY, NOW WE WILL DO SO MATHEMATICALLY Steps to this assignment: 1. First figure out the network ID from the IP address and the subnet mask using anding, enter that in Network ID space 1.1.1.Convert IP address to binary 1.1.2.Convert Subnet Mask to binary 1.1.3.Perform Anding operation 2. Next figure out the next network id, do this by adding the block size to the network ID you just determined 1. Convert to decimal format 3. Next figure out the first assignable IP address by adding one to the network ID 4. Next figure out the broadcast IP by subtracting one from the next network ID from step two 1. Add block size to network ID to find next network ID 5. Next figure out the last assignable IP by subtracting one from the broadcast IP Example: IP address: 192.l168.4.130/25 Step 1. Ip address in binary IP # to convert 128 64 32 16 8 4 2 1 192 1 1 0 0 0 0 0 0 168 1 0 1 0 1 0 0 0 4 0 0 0 0 0 1 0 0 130 1 0 0 0 0 0 1 0 SM # to convert 128 64 32 16 8 4 2 1 255 1 1 1 1 1 1 1 1 255 1 1 1 1 1 1 1 1 255 1 1 1 11 1 1 1 128 1 0 0 0 0 0 0 0 2. IP Address: 11000000.10101000.00000100.1.0000010 Subnet Mask 11111111.11111111.11111111.10000000 Network ID 11000000.10101000.00000100.10000000 Convert to decimal format:

Subnetting Class C Addresses-Handout Show your work here # to convert 128 64 32 16 8 4 2 1 192 1 1 0 0 0 0 0 0 168 1 0 1 0 1 0 0 0 4 0 0 0 0 0 1 0 0 128 1 0 0 0 0 0 0 0 3. Figure out first assignable IP address by adding one to network ID: 192.168.4.128 + 1=192.168.4.129 4. Find broadcast IP by subtracting 1 from next Network ID 192.168.4.128 + 128=192.168.5.0 (Next network ID) Subtract one from next network ID 192.168.5.0-1=192.168.4.255 5. Figure out last assignable IP by subtracting one from broadcast IP 192.168.4.255-1=192.168.4.254 6. Verify using subnet calculator (but do this last)