Level 2 protocols
Mac level
Analyzer recognized the typical MAC level of the 802.3 network and the MAC
level of the Ethernet II network (which does not need the LLC level).
802.3
0 |
1 |
2 |
3 |
4 |
5 |
6 |
7 |
8 |
9 |
10 |
11 |
12 |
13 |
14 |
15 |
16 |
17 |
18 |
19 |
20 |
21 |
22 |
23 |
24 |
25 |
26 |
27 |
28 |
29 |
30 |
31 |
DSAP |
DSAP |
SSAP |
SSAP |
LEN |
... |
... |
LLC
PDU (0 -> 1500 byte) |
... |
PAD (0 -> 46
byte) |
... |
FCS |
Ethernet v.2.0
0 |
1 |
2 |
3 |
4 |
5 |
6 |
7 |
8 |
9 |
10 |
11 |
12 |
13 |
14 |
15 |
16 |
17 |
18 |
19 |
20 |
21 |
22 |
23 |
24 |
25 |
26 |
27 |
28 |
29 |
30 |
31 |
DSAP |
DSAP |
SSAP |
SSAP |
TYPE |
... |
... |
Data (46 ->
1500 byte) |
... |
FCS |
LLC level
The LLC level is typical of IEEE 802 networks. Here it is
also the SNAP version which is used to support the protocol which are not
defined by ISO.
LLC (standard)
0 |
1 |
2 |
3 |
4 |
5 |
6 |
7 |
8 |
9 |
10 |
11 |
12 |
13 |
14 |
15 |
16 |
17 |
18 |
19 |
20 |
21 |
22 |
23 |
24 |
25 |
26 |
27 |
28 |
29 |
30 |
31 |
DSAP |
SSAP |
CONTROL |
... |
Data |
LLC/SNAP
0 |
1 |
2 |
3 |
4 |
5 |
6 |
7 |
8 |
9 |
10 |
11 |
12 |
13 |
14 |
15 |
16 |
17 |
18 |
19 |
20 |
21 |
22 |
23 |
24 |
25 |
26 |
27 |
28 |
29 |
30 |
31 |
DSAP=AAH |
SSAP=AAH |
CONTROL=03H |
OUI |
OUI |
Protocol Type |
Data |