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Physical Net. Access IP TCP/UDP Application Physical Net. Access IP TCP/UDP Application Physical Net. Access Physical Net. Access IP Physical Net. Access.

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Presentation on theme: "Physical Net. Access IP TCP/UDP Application Physical Net. Access IP TCP/UDP Application Physical Net. Access Physical Net. Access IP Physical Net. Access."— Presentation transcript:

1 Physical Net. Access IP TCP/UDP Application Physical Net. Access IP TCP/UDP Application Physical Net. Access Physical Net. Access IP Physical Net. Access Physical Net. Access IP

2 Ethernet Hub PC1 Bridge Ethernet Hub PC2 Router R1 DHCP Server Router R2 PC3 PC4 X.25ATM L2 Switch subnet Router R3 Routing Protocol DHCP ARP: IP->MAC addr IP dst IP src Upper layer IP Packet MAC dst MAC src Application layer: FTP, TELNET, SMTP, SNMP, HTTP Routing Protocol: BGP, OSPF, RIP -> Multicast Transport layer: TCP, UDP, SCTP IP, ICMP, IGMP, RSVP (QoS) ARP, DHCP (IP addr. bitwise-AND SubnetMask)

3 Ethernet Hub PC1 Firewall PC2PC3 PC4 Interconnected Device L1, Repeater PC1PC2PC3PC4 Bridge L2 Switch Router R1 L2 Device PC1 PC2 PC3 PC4 Collision Domain Subnet Collision Domain L3 Device Broadcast Domain Subnet All-layer Device


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