Topologie s CISCO routery
Výpis datagramu s volitelnou položkou volné explicitní směrování (loose source route). Odpověď zachycená na zdrojovém PC:
No. Time Source Destination Protocol Info 4 3.359604 192.168.3.2 192.168.4.2 ICMP Echo (ping) reply Frame 4 (60 bytes on wire, 60 bytes captured) Arrival Time: Jun 1, 2005 16:52:20.235741000 Time delta from previous packet: 0.038969000 seconds Time since reference or first frame: 3.359604000 seconds Frame Number: 4 Packet Length: 60 bytes Capture Length: 60 bytes Protocols in frame: eth:ip:icmp:data Ethernet II, Src: 00:30:94:e5:bc:f0, Dst: 00:90:f5:2a:8b:82 Destination: 00:90:f5:2a:8b:82 (Clevo_2a:8b:82) Source: 00:30:94:e5:bc:f0 (Cisco_e5:bc:f0) Type: IP (0x0800) Trailer: 0000 Internet Protocol, Src Addr: 192.168.3.2 (192.168.3.2), Dst Addr: 192.168.4.2 (192.168.4.2) Version: 4 Header length: 28 bytes Differentiated Services Field: 0x00 (DSCP 0x00: Default; ECN: 0x00) 0000 00.. = Differentiated Services Codepoint: Default (0x00) .... ..0. = ECN-Capable Transport (ECT): 0 .... ...0 = ECN-CE: 0 Total Length: 44 Identification: 0x87dc (34780) Flags: 0x00 0... = Reserved bit: Not set .0.. = Don't fragment: Not set ..0. = More fragments: Not set Fragment offset: 0 Time to live: 61 Protocol: ICMP (0x01) Header checksum: 0x35d7 (correct) Source: 192.168.3.2 (192.168.3.2) Destination: 192.168.4.2 (192.168.4.2) Options: (8 bytes) Loose source route (7 bytes) Pointer: 8 192.168.1.2 EOL Internet Control Message Protocol Type: 0 (Echo (ping) reply) Code: 0 Checksum: 0x73bf (correct) Identifier: 0xbe15 Sequence number: 0x0000 Data (8 bytes) 0000 c4 e7 9d 42 69 00 03 00 ...Bi...