PPP/IP PACKET EXAMPLE

In the example shown the IP packet is encapsulated in a PPP frame including the flag sequence (7E), address (FF 03), protocol (00 21) and FCS (0B 81). In turn, the IP packet encapsulates a UDP message.

Example:7E FF 03 00 21 45 00 00 40 00 01 00 00 3C 11 E0 31 CE D9 8F 1F C7 B6 78 CB 04 63 00 35 00 2C AB DA 00 01 01 00 00 01 00 00 00 00 00 00 04 70 6F 70 64 02 69 78 06 6E 65 74 63 6F 6D 03 63 6F 6D 00 00 01 00 01 0B 81 7E
Start 7E
Address FF 03
SEP 00 21
IP Header 45 00 00 40 00 01 00 00 3C 11 E0 31 CE D9 8F 1F C7 B6 78 CB
Data 04 89 00 35 00 2C AB B4 00 01 01 00 00 01 00 00 00 00 00 00 04 70 6F 70 64 02 69 78 06 6E 65 74 63 6F 6D 03 63 6F 6D 00 00 01 00 01
FCS 0B 81
Stop 7E
IP Header
VER=4 IHL=5 TOS=0 TOL=64 ID=1 FLG=00 FRO=00 TTL=60 PRO=17 IP_SUM=E031 SRC=206.217.143.31. DEST=199.182.120.203. OPT=00000000