Alcatel Carrier Internetworking Solutions 1000 ADSL User Manual
Page 68
Bridge
Encap
FCS
VPI
Action
Use input fields below to add entry
Port
VCI
State
-
LLCSNAP
NO
8
-
Add
Figure 39. Port States Table
The fields of the Port States Table are described next.
B
B
r
r
i
i
d
d
g
g
e
e
P
P
o
o
r
r
t
t
One of the characteristics of a databridge is the number of ports it supports. A
bridge port is the logical equivalent of an interface. By default, the ADSL modem
supports one local port (Ethernet interface) and four remote ports. The remote
ports are mapped on the virtual ATM connections of the ADSL line. Only the
remote ports are displayed in the table and are indicated as ADSL Port 0, 1, 2,
and 3.
E
E
n
n
c
c
a
a
p
p
This field indicates the encapsulation of Ethernet or IEEE 802.3 frames to
AAL5/ATM protocol.
The ADSL modem supports both the LLC/SNAP method and the VC MUX method
for bridged Ethernet V2.0/IEEE 802.3 PDUs. By default, this field is set to
LLC/SNAP, and the access server of the ISP or corporate network must use the
same method. If it does not, contact the ISP or corporate network administrator.
F
F
C
C
S
S
This field indicates whether the last four bytes of the MAC frames are preserved or
not. By default, the FCS of a MAC frame is not preserved and is set to NO. If the
ISP or corporate network requires the FCS to be preserved over the ADSL
connection, enter YES in this field.
V
V
P
P
I
I
/
/
V
V
C
C
I
I
VPI and VCI values identify an ATM virtual connection. Because the modem
comes with preconfigured VPI/VCI values, you do not have to configure these
fields.
However, if the ISP or corporate network administrator require VPI/VCI values
different from the default values, you must enter these specific values in this field.