Ch.9 – IP Addressing Part 1 CCNA 1 version 3.1.

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Presentation transcript:

Ch.9 – IP Addressing Part 1 CCNA 1 version 3.1

IP Addressing 192.168.1.0 192.4.0.0 10.2.0.0 172.0.0.0 Broadcast Address Used to send data to all devices on the network All ones in the host portion of the address All devices pay attention to a broadcast Broadcast addresses cannot be used as an address for any device that is attached to the network. What are the broadcast addresses for these networks?

Addressing: Network & Host 192.168.1.0 192.4.0.0 10.2.0.0 172.0.0.0 Routers are required when two hosts with IP addresses on different networks or subnets need to communicate. What are some example Host IP addresses?

Host Addresses Network Addresses include a range of HOST IP addresses For every network (or subnet) two address cannot be used for HOST IP addresses: Network Address – The address that represents the network. Broadcast Address – The address used to communicate with all devices on the network.

Addressing Hosts Network Network Host Host 172 16 172 16 172 16 1 172 Given the 172.16.0.0 address with the 255.255.0.0 subnet mask: Network Network Host Host 172 16 One network address, 65,534 hosts, one broadcast address. 1 Network Address 172 16 65,534 Host Addresses 216 - 2 172 16 1 172 16 Etc. Etc. 172 16 255 254 1 Broadcast Address 172 16 255 255

Range of hosts – Your Turn! Host addresses are all addresses between the network address and the broadcast address. What is the range of host addresses for each network? Network Address Subnet Mask Broadcast Address 172.0.0.0 255.0.0.0 172.255.255.255 172.16.0.0 255.255.0.0 172.16.255.255 192.168.1.0 255.255.255.0 192.168.1.255 192.168.0.0 255.255.0.0 192.168.255.255 192.168.0.0 255.255.255.0 192.168.0.255 10.1.1.0 /24 10.1.1.255 10.2.0.0 /16 10.2.255.255 10.0.0.0 /16 10.0.255.255

Range of hosts – Your Turn! Network Address Subnet Mask Broadcast Address 172.0.0.0 255.0.0.0 172.255.255.255 172.0.0.1 through 172.255.255.254 172.16.0.0 255.255.0.0 172.16.255.255 172.16.0.1 through 172.16.255.254 192.168.1.0 255.255.255.0 192.168.1.255 192.168.1.1 through 192.168.1.254 192.168.0.0 255.255.0.0 192.168.255.255 192.168.0.1 through 192.168.255.254 192.168.0.0 255.255.255.0 192.168.0.255 192.168.0.1 through 192.168.0.254

Range of hosts – Your Turn! Network Address Subnet Mask Broadcast Address 10.1.1.0 /24 10.1.1.255 10.1.1.1 through 10.1.1.254 10.2.0.0 /16 10.2.255.255 10.2.0.1 through 10.2.255.254 10.0.0.0 /16 10.0.255.255 10.0.0.1 through 10.0.255.254

Subnet Masks: Non-Natural Boundaries Subnet masks do not have to end on natural octet boundaries Convert these to binary: Network Address Subnet Mask 172.1.16.0 255.255.240.0 192.168.1.0 255.255.255.224

Subnet Masks: Non-Natural Boundaries Subnet masks do not have to end on natural octet boundaries 172.1.16.0 10101100.00000001.00010000.00000000 255.255.240.0 11111111.11111111.11110000.00000000 What is the range of host addresses in dotted-decimal and binary? What is the broadcast address? How many host addresses?

Subnet Masks: Non-Natural Boundaries Subnet masks do not have to end on natural octet boundaries 172.1.16.0 10101100.00000001.00010000.00000000 255.255.240.0 11111111.11111111.11110000.00000000 172.1.16.1 10101100.00000001.00010000.00000001 172.1.16.2 10101100.00000001.00010000.00000010 172.1.16.3 10101100.00000001.00010000.00000011 … 172.1.16.255 10101100.00000001.00010000.11111111 172.1.17.0 10101100.00000001.00010001.00000000 172.1.17.1 10101100.00000001.00010001.00000001 172.1.31.254 10101100.00000001.00011111.11111110

Subnet Masks: Non-Natural Boundaries Subnet masks do not have to end on natural octet boundaries 172.1.16.0 10101100.00000001.00010000.00000000 255.255.240.0 11111111.11111111.11110000.00000000 172.1.16.1 10101100.00000001.00010000.00000001 … 172.1.31.254 10101100.00000001.00011111.11111110 172.1.31.254 10101100.00000001.00011111.11111111 (broadcast) Number of hosts: 212 – 2 = 4,096 – 2 = 4,094 hosts

Subnet Masks: Non-Natural Boundaries Subnet masks do not have to end on natural octet boundaries 192.168.1.0 11000000.10101000.00000001.00000000 255.255.255.224 11111111.11111111.11111111.11100000 192.168.1.1 11000000.10101000.00000001.00000001 192.168.1.2 11000000.10101000.00000001.00000010 192.168.1.3 11000000.10101000.00000001.00000011 … 192.168.1.29 11000000.10101000.00000001.00011101 192.168.1.30 11000000.10101000.00000001.00011110 192.168.1.31 11000000.10101000.00000001.00011111 (broadcast)

Subnet Masks: Non-Natural Boundaries Subnet masks do not have to end on natural octet boundaries 192.168.1.0 11000000.10101000.00000001.00000000 255.255.255.224 11111111.11111111.11111111.11100000 192.168.1.1 11000000.10101000.00000001.00000001 … 192.168.1.30 11000000.10101000.00000001.00011110 192.168.1.31 11000000.10101000.00000001.00011111 (broadcast) Number of hosts: 25 – 2 = 32 – 2 = 30 hosts