Topologie s CISCO routery
Výpis datagramu s volitelnou položkou striktní explicitní směrování (strict source route). Požadavek zachycený na zdrojovém PC:
No. Time Source Destination Protocol Info 1 0.000000 192.168.4.2 192.168.4.1 ICMP Echo (ping) request Frame 1 (66 bytes on wire, 66 bytes captured) Arrival Time: Jun 1, 2005 16:47:41.191684000 Time delta from previous packet: 0.000000000 seconds Time since reference or first frame: 0.000000000 seconds Frame Number: 1 Packet Length: 66 bytes Capture Length: 66 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: 192.168.4.1 (192.168.4.1) Version: 4 Header length: 36 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: 52 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: 0xa276 (correct) Source: 192.168.4.2 (192.168.4.2) Destination: 192.168.4.1 (192.168.4.1) Options: (16 bytes) NOP Strict source route (15 bytes) Pointer: 4 192.168.1.2 <- (current) 192.168.2.1 192.168.3.2 Internet Control Message Protocol Type: 8 (Echo (ping) request) Code: 0 Checksum: 0x3fd5 (correct) Identifier: 0x8115 Sequence number: 0x0000 Data (8 bytes) 0000 ad e6 9d 42 e9 eb 02 00 ...B....