switch = Switch(4)
host_a = Host(mac_addr = "fa:ce:de:ad:be:ef", ip_addr = "192.168.1.4")
host_a.connect(switch)
switch.connect_on_port(1, host_a)
host_b = Host(mac_addr = "aa:aa:bb:bb:cc:dd", ip_addr = "192.168.1.5")
host_b.connect(switch)
switch.connect_on_port(2, host_b)
host_a.send_data("192.168.1.5", 80, ipv4.IPv4Packet.UpperLayerProtocol.UDP, b'A' * 1600)Example Output:
+--------------------------------------------------------------------------------------------------+
| --- Ethernet frame --- |
| Frame length: 71 bytes (568 bits) |
| Destination: ffff:ffff:ffff:ffff |
| Source: fa:ce:de:ad:be:ef |
| Type: ARP (0x806) |
| +------------------------------------------------------------------------------+ |
| | --- ARP (Request) --- | |
| | Hardware type: Ethernet (1) | |
| | Protocol type: IPv4 (0x0800) | |
| | Hardware size: 6 | |
| | Protocol size: 4 | |
| | Sender MAC address: fa:ce:de:ad:be:ef | |
| | Sender IP address: 192.168.1.4 | |
| | Target MAC address: 00:00:00:00:00:00 | |
| | Target IP address: 192.168.1.5 | |
| | Who has 192.168.1.5? Tell 192.168.1.4 | |
| | --- End ARP --- | |
| +------------------------------------------------------------------------------+ |
| --- End Ethernet frame --- |
+--------------------------------------------------------------------------------------------------+
+--------------------------------------------------------------------------------------------------+
| --- Ethernet frame --- |
| Frame length: 71 bytes (568 bits) |
| Destination: fa:ce:de:ad:be:ef |
| Source: aa:aa:bb:bb:cc:dd |
| Type: ARP (0x806) |
| +------------------------------------------------------------------------------+ |
| | --- ARP (Reply) --- | |
| | Hardware type: Ethernet (1) | |
| | Protocol type: IPv4 (0x0800) | |
| | Hardware size: 6 | |
| | Protocol size: 4 | |
| | Sender MAC address: aa:aa:bb:bb:cc:dd | |
| | Sender IP address: 192.168.1.5 | |
| | Target MAC address: fa:ce:de:ad:be:ef | |
| | Target IP address: 192.168.1.4 | |
| | Who has 192.168.1.4? Tell 192.168.1.5 | |
| | --- End ARP --- | |
| +------------------------------------------------------------------------------+ |
| --- End Ethernet frame --- |
+--------------------------------------------------------------------------------------------------+
+--------------------------------------------------------------------------------------------------+
| --- Ethernet frame --- |
| Frame length: 1546 bytes (12368 bits) |
| Destination: aa:aa:bb:bb:cc:dd |
| Source: fa:ce:de:ad:be:ef |
| Type: IPv4 (0x800) |
| +------------------------------------------------------------------------------+ |
| | --- IPv4 --- | |
| | Source address: 192.168.1.4 | |
| | Destination address: 192.168.1.5 | |
| | Total Length: 1520 | |
| | Identification: 0x5145e4d8 (1363535064) | |
| | Flags: 0x1 | |
| | ... Reserved bit: Not set | |
| | ... Don't Fragment: Not set | |
| | ... More Fragments: Set | |
| | Fragment Offset: 0x0 | |
| | Time to Live: 128 | |
| | Header Checksum: 0x457 | |
| | Protocol: UDP (17) | |
| | --- End IPv4 --- | |
| +------------------------------------------------------------------------------+ |
| --- End Ethernet frame --- |
+--------------------------------------------------------------------------------------------------+
+--------------------------------------------------------------------------------------------------+
| --- Ethernet frame --- |
| Frame length: 264 bytes (2112 bits) |
| Destination: aa:aa:bb:bb:cc:dd |
| Source: fa:ce:de:ad:be:ef |
| Type: IPv4 (0x800) |
| +------------------------------------------------------------------------------+ |
| | --- IPv4 --- | |
| | Source address: 192.168.1.4 | |
| | Destination address: 192.168.1.5 | |
| | Total Length: 238 | |
| | Identification: 0x5145e4d8 (1363535064) | |
| | Flags: 0x0 | |
| | ... Reserved bit: Not set | |
| | ... Don't Fragment: Not set | |
| | ... More Fragments: Not set | |
| | Fragment Offset: 0x0 | |
| | Time to Live: 128 | |
| | Header Checksum: 0x457 | |
| | Protocol: UDP (17) | |
| | --- End IPv4 --- | |
| +------------------------------------------------------------------------------+ |
| --- End Ethernet frame --- |
+--------------------------------------------------------------------------------------------------+