Making connections Connecting a computer to a LAN

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Making connections Connecting a computer to a LAN donna Bair-Mundy

Making connections Connecting a computer to a LAN donna Bair-Mundy

Network Interface Card

Network Interface Card

Network Interface Card - pc

Network Interface Card - pc

Network Interface Card - pc

Network Interface Card - pc

Network Interface Card - laptop

Network Interface Card - laptop

Assigning IP address

Assigning IP address

Assigning IP address

Assigning IP address

Assigning IP address

Assigning IP address

Assigning IP address

Assigning IP address

Assigning IP address

Assigning IP address

Assigning IP address

Assigning IP address

Assigning IP address

Assigning IP address

Assigning IP address

Assigning IP address

Assigning IP address

Assigning IP address

Assigning IP address

Assigning IP address

Assigning IP address

Assigning IP address

Assigning IP address

Assigning IP address

Assigning IP address

Assigning IP address

Finding DNS server

Finding DNS server

Finding DNS server

Finding DNS server

Finding DNS server

Finding DNS server

Finding DNS server

Finding DNS server

DNS server

DNS server

DHCP (Dynamic Host Configuration Protocol) • Computer boots • Sends “DHCP DISCOVER” packet to

DHCP (Dynamic Host Configuration Protocol) • Computer boots • Sends “DHCP DISCOVER” packet to DHCP server • DHCP server sends IP address

Fixed IP address

Fixed IP address

IP Address 128. 171. 94. 192 UH Network Subnet Machine

IP Address 128. 171. 94. 192 UH Network Subnet Machine

LIS Subnet 128. 171. 58. ___ UH Network LIS subnet Device

LIS Subnet 128. 171. 58. ___ UH Network LIS subnet Device

LIS Subnet 128. 171. 58. 1 128. 171. 58. 2 128. 171. 58. 3

LIS Subnet 128. 171. 58. 1 128. 171. 58. 2 128. 171. 58. 3 128. 171. 58. 4 128. 171. 58. 5 128. 171. 58. 6 128. 171. 58. 7 128. 171. 58. 8 … 128. 171. 58. 254 128. 171. 58. 255 Reserved for router Router Office printer Server - Djoser Server - Nut LIS Chair Dr. Harada Dr. Jacsó Alice Unassigned [Broadcast] Reserved

Fixed IP address 128. 171. 58. 8

Fixed IP address 128. 171. 58. 8

LIS Subnet IP address 128. 171. 58. ___ UH Network LIS subnet Device

LIS Subnet IP address 128. 171. 58. ___ UH Network LIS subnet Device

LIS Subnet IP address 128. 171. 58. ___ Network part of address Device

LIS Subnet IP address 128. 171. 58. ___ Network part of address Device

Network part of LIS Subnet IP address What we see 128. 171. 58. ___

Network part of LIS Subnet IP address What we see 128. 171. 58. ___ What the computer sees 10000000. 10101011. 00111010. ___

Subnet mask 11111111. 0000 1 s mask network part of address Record it as:

Subnet mask 11111111. 0000 1 s mask network part of address Record it as: 255. 0 0 s reveal individual device no.

Subnet mask 128. 171. 58. 8 255. 0

Subnet mask 128. 171. 58. 8 255. 0

Default gateway (Router that forwards traffic to remote subnets) 128. 171. 58. 8 255.

Default gateway (Router that forwards traffic to remote subnets) 128. 171. 58. 8 255. 0 128. 171. 58. 1

LIS Subnet 128. 171. 58. 1 128. 171. 58. 2 128. 171. 58. 3

LIS Subnet 128. 171. 58. 1 128. 171. 58. 2 128. 171. 58. 3 128. 171. 58. 4 128. 171. 58. 5 128. 171. 58. 6 128. 171. 58. 7 128. 171. 58. 8 … 128. 171. 58. 254 128. 171. 58. 255 Router Office printer Server - Djoser Server - Nut LIS Chair Dr. Harada Dr. Jacsó Alice [Broadcast] Reserved

Ping (echo request) Are you there? % ping 128. 171. 58. 11 alive I’m

Ping (echo request) Are you there? % ping 128. 171. 58. 11 alive I’m alive

Broadcast ping (echo request) Are you there? % ping 128. 171. 58. 255 128.

Broadcast ping (echo request) Are you there? % ping 128. 171. 58. 255 128. 171. 58. 2 alive 128. 171. 58. 3 alive 128. 171. 58. 4 alive I’m alive