D-NASA-Lec05-Internet_Protocol_Layer

Network Layer

Function

Forwarding

Router 通常有多個 interface，將 packet 從來源 interface 轉到目的地方向 interface 並發送出去就稱為 fowarding

Routing

Network Layer 會決定一個 packet 該走哪條路徑前往目的地，通常由 routing algorithm 決定

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Technical Thing

IPv4 Packet Format

D-NASA-Lec05a-IPv4_Packet_Format

Fragmentation

D-NASA-Lec05b-Fragmentation

IPv4 Address

D-NASA-Lec05c-IPv4_Address

Setting Interface Address

D-NASA-Lec05d-Setting_Interface_Address

Classless Inter-Domain Routing (CIDR)

D-NASA-Lec05e-CIDR

Private IP

D-NASA-Lec05f-private_ip

Routing Table

D-NASA-Lec05g-Routing_Table

ICMP

D-NASA-Lec05h-ICMP