INLS 184: Protocols and Network Management

INLS 184: Protocols and Network Management
Feb 1, 2005
Instructor: Jim Gogan

Assignment #1 -- Ethernet Physical/Link Layer Protocol Decodes

DUE TUESDAY, FEBRUARY 8th.

Below are 10 Ethernet packets/frame obtained from a protocol analyzer. For each of these packets, I would like the following information:

what can you tell me about the source and destination of each of these packets?;
what Ethernet frame type (out of the four possible types) is each packet and tell me why you came to that conclusion;
what higher level (network) protocol type is each packet and tell me why you came to that conclusion;
is the packet a legal length Ethernet packet; if not, why not?

(in traces below, "xx xx xx xx" at end of packet indicates a valid CRC)

Packet Trace 1:

ab 00 00 03 00 00 aa 00 04 00 13 a8 60 03 21 00
0d 02 00 00 aa 00 04 00 13 a8 03 da 05 00 00 00
00 00 00 00 00 00 aa 00 04 00 02 a8 0a 00 00 01
aa00 00 00 00 00 00 00 00 00 00 00 xx xx xx xx

Packet Trace 2:

ff ff ff ff ff ff 00 02 55 1d 0b 65 08 00 45 00
00 4e 36 16 00 00 80 11 75 21 98 02 5f 63 98 02
ff ff 00 89 00 89 00 3a 1c 61 fd 30 01 10 00 01
00 00 00 00 00 00 20 45 46 46 43 45 4a 45 46 43
41 43 41 43 41 43 41 43 41 43 41 43 41 43 41 43
41 43 41 43 41 42 4c 00 00 20 00 01 xx xx xx xx

Packet Trace 3:

00 80 19 08 37 39 00 00 c0 bc 87 40 00 19 aa aa
03 08 00 07 80 9b 00 11 00 00 00 03 00 03 25 2a
06 06 06 01 01 de 26 07 00 01 00 00 00 04 00 99
53 22 d5 00 07 71 9c 02 00 df ff ff xx xx xx xx

Packet Trace 4:

ff ff ff ff ff ff 00 00 c0 b7 ed 51 01 e0 ff ff
01 e0 00 00 09 62 07 05 ff ff ff ff ff ff 04 52
09 62 07 05 00 00 c0 b7 ed 51 04 52 00 02 00 04
44 45 4e 54 2d 43 45 00 00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
98 02 6b 44 00 00 00 00 00 01 04 51 00 02 f1 1f
2d 2d 2d 2d 2d 5f 39 38 30 32 36 42 34 34 00 00
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
98 02 6b 44 00 00 00 00 00 01 44 44 00 03 00 47
44 45 4e 54 43 45 50 52 49 4e 54 00 00 00 00 00
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
98 02 6b 44 00 00 00 00 00 01 80 60 00 03 01 07
44 45 4e 54 2d 43 45 00 00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
98 02 6b 44 00 00 00 00 00 01 81 04 00 03 00 04
44 45 43 4f 4c 4f 47 59 00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
98 02 6b 9a 00 00 00 00 00 01 04 51 00 02 00 47
44 45 43 4f 44 45 44 00 00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
98 02 6b 9a 00 00 00 00 00 01 80 60 00 03 01 07
44 45 43 4f 4c 4f 47 59 00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
98 02 6b 9a 00 00 00 00 00 01 81 04 00 03 xx xx
xx xx

Packet Trace 5:

00 00 1b 02 24 d7 00 00 1b 0a 4a 4a 81 37 ff ff
00 32 00 11 98 02 15 64 00 00 00 00 00 01 04 51
98 02 15 00 00 00 1b 0a 4a 4a 40 03 22 22 d4 11
03 00 48 00 01 00 59 29 00 00 00 xx xx xx xx

Packet Trace 6:

ff ff ff ff ff ff 08 00 09 46 43 87 00 64 e0 e0
03 ff ff 00 60 00 00 09 66 13 25 ff ff ff ff ff
ff 04 52 09 66 13 25 08 00 09 46 43 87 04 52 00
02 03 87 48 50 32 38 36 38 38 42 5f 30 38 30 30
30 39 34 36 34 33 38 37 5f 32 00 00 00 00 00 00
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 00 09 66 13 25 08 00 09 46 43 87 00 00 00
01 00 xx xx xx xx

Packet Trace 7:

08 00 20 8f 0f 6d 08 00 20 a8 63 eb 08 00 45 00
00 43 64 18 40 00 ff 11 41 5b 98 02 91 30 98 02
15 01 a4 9a 00 35 00 2f 98 f7 fd cd 01 00 00 01
00 00 00 00 00 00 08 64 68 63 70 37 36 35 32 04
64 68 63 70 03 75 6e 63 03 65 64 75 00 00 01 00
01 xxxx xx xx

Packet Trace 8:

ff ff ff ff ff ff 00 06 29 8f b1 88 88 6d 00 01
00 01 cc 73 12 00 01 00 00 06 29 8f b1 88 00 00
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
35 32 33 30 37 5a 32 32 30 31 31 39 39 34 40 61
6e 6f 6e 2e 70 65 6e 65 74 2e 66 69 3e 20 61 72
74 69 63 6c 65 0d 0a 4d 65 73 73 61 67 65 2d 49
44 3a 20 3c 31 35 32 33 30 37 5a 32 32 30 31 31
39 39 34 40 61 6e 6f 6e 2e 70 65 6e 65 74 2e 66
2d 2d 2d 2d 2d 2d 2d 2d 2d 2d xx xx xx xx

Packet Trace 9:

09 00 07 ff ff ff aa 00 04 00 d6 9d 01 78 aa aa
03 08 00 07 80 9b 01 70 d3 93 00 00 00 fc ff 8c
01 01 01 00 fc 08 8c 00 fc 80 00 fc 82 00 03 80
00 0f 82 00 56 01 00 57 01 00 58 01 00 5b 01 00
81 81 00 81 82 00 82 01 00 88 81 00 88 82 00 8c
81 00 8c 82 00 8d 81 00 8d 82 00 90 01 00 b6 81
00 b6 82 00 e1 81 00 e1 82 00 e5 81 00 e5 82 00
e6 01 00 e7 01 00 eb 01 00 ec 01 00 fe 01 01 1c
01 01 1d 81 01 1d 82 01 fa 81 01 fa 82 06 04 01
06 05 01 06 09 81 06 09 82 06 0b 81 06 0b 82 06
0f 81 06 0f 82 06 40 80 06 40 82 06 41 81 06 41
02 06 42 02 07 f3 81 07 f3 82 07 f4 82 07 f4 82
08 46 01 2e a8 01 2e e0 81 2e e0 82 3c 5e 01 46
35 02 4f 49 01 50 cb 81 50 cb 82 50 e1 01 52 b7
01 5c 31 81 5c 31 82 5f 50 81 5f 50 82 5f 51 01
5f 53 81 5f 53 82 5f 54 01 5f 56 01 5f 57 81 5f
57 82 5f 58 01 5f 5b 81 5f 5b 82 5f 5c 81 5f 5c
82 5f 5f 01 5f 60 81 5f 60 82 5f 61 01 5f 64 81
5f 64 82 5f 65 81 5f 65 82 5f 69 01 5f 6a 81 5f
6a 82 5f 6b 01 5f 6e 81 5f 6e 82 5f 70 81 5f 70
82 5f 73 01 5f 74 01 5f 75 81 5f 75 82 5f 78 81
5f 78 82 5f 7d 01 5f 7e 81 5f 7e 82 5f 7f 01 60
8e 82 60 90 82 75 95 81 75 95 82 7d 00 01 8a 34
82 8a 34 82 92 93 02 92 94 02 de 26 81 de 26 82
de 28 81 de 28 82 xx xx xx xx

Packet Trace 10:

01 00 0c cc cc cc 00 40 96 32 b2 77 00 61 aa aa
03 00 00 0c 20 00 02 b4 a8 18 00 01 00 11 30 30
34 30 39 36 33 32 62 32 37 37 00 00 02 00 11 00
00 00 01 01 01 cc 00 04 98 13 80 9b 00 03 00 08
66 65 63 30 00 04 00 08 00 00 00 00 00 05 00 15
43 69 73 63 6f 20 41 50 33 34 30 20 31 31 2e 30
35 00 06 00 09 41 50 33 34 30 00 0b 00 05 00 xx
xx xx xx