A
L
B
E
D
O
T
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l
e
c
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m
-
J
o
a
n
d
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À
u
s
t
r
i
a
,
1
1
2
-
B
a
r
c
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l
o
n
a
-
0
8
0
1
8
-
w
w
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.
a
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.
c
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User Guide
72
1. Make sure that your tester is connected to the network. The physical layer must
be up and working (See section 4.1.1).
2. From the Home panel, go to CONFIG,
The test port settings panel is displayed.
3. Select either Port A or Port B to enter in the port specific configuration.
4. Enter in the Frame menu.
All settings related with frame configuration are displayed.
Figure 4.2: IEEE 802.1Q y IEEE 820.1ad frame structures.
bits
13 5 724 6 8
PCP
CFI
VID
Preamble
bits
13 57
SDF (0xd5)
2
468
FCS
DA
SA
1
6
6
2
4
7
bytes
Q frame
Ethertype
Q-Tag
2
(IEEE 802.1Q)
2
Ethertype (0x8100)
(0x55-55-55-55-55-55-55)
bits
SDF (0xd5)
FCS
DA
SA
Ethertype (0x88a8)
1
6
6
2
4
7
PB frame
Ethertype
Ethertype (0x8100)
C-Tag
2
2
2
(IEEE 802.1ad)
13 572468
bytes
S-Tag
2
Preamble
(0x55-55-55-55-55-55-55)
DEI
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