Topologie s CISCO routery
Výpis datagramu s volitelnou položkou striktní explicitní směrování (strict source route). Neuvedeny všechny směrovače na cestě. Požadavek zachycený na zdrojovém PC:
No. Time Source Destination Protocol Info 3 10.314880 192.168.4.2 192.168.1.2 ICMP Echo (ping) request Frame 3 (58 bytes on wire, 58 bytes captured) Arrival Time: Jun 1, 2005 16:49:55.642545000 Time delta from previous packet: 8.760786000 seconds Time since reference or first frame: 10.314880000 seconds Frame Number: 3 Packet Length: 58 bytes Capture Length: 58 bytes Protocols in frame: eth:ip:icmp:data Ethernet II, Src: 00:90:f5:2a:8b:82, Dst: 00:30:94:e5:bc:f0 Destination: 00:30:94:e5:bc:f0 (Cisco_e5:bc:f0) Source: 00:90:f5:2a:8b:82 (Clevo_2a:8b:82) Type: IP (0x0800) Internet Protocol, Src Addr: 192.168.4.2 (192.168.4.2), Dst Addr: 192.168.1.2 (192.168.1.2) 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: 0x3372 (13170) Flags: 0x00 0... = Reserved bit: Not set .0.. = Don't fragment: Not set ..0. = More fragments: Not set Fragment offset: 0 Time to live: 255 Protocol: ICMP (0x01) Header checksum: 0x33d2 (correct) Source: 192.168.4.2 (192.168.4.2) Destination: 192.168.1.2 (192.168.1.2) Options: (8 bytes) NOP Strict source route (7 bytes) Pointer: 4 192.168.3.2 <- (current) Internet Control Message Protocol Type: 8 (Echo (ping) request) Code: 0 Checksum: 0xcff2 (correct) Identifier: 0x9e15 Sequence number: 0x0000 Data (8 bytes) 0000 33 e7 9d 42 af cd 09 00 3..B....