Procedure
Step 1 Check that the physical status of the ADSL interface is Up.
Run the display interface atm command in the system view to check whether the physical status
of the ADSL interface is Up. The following information uses the display on ATM1/0/0 as an
example.
l If "Atm1/0/0 current state : Administratively DOWN" is displayed, ATM1/0/0 has been
shut down. Run the undo shutdown command on ATM1/0/0 to enable it.
l If "Atm1/0/0 current state : DOWN" is displayed, check the following items.
Item Expected Result Follow-up Operation
Check the
connection
between the local
and remote
interfaces.
The local and remote interfaces
are properly connected using a
cable.
If the local and remote
interfaces are not properly
connected, reconnect them. If
the fault persists, change the
cable between the two
interfaces.
Check the
transmission
standard of the
local ADSL
interface.
Run the display dsl interface
atm command in the system
view to check the parameters
settings of the local ADSL
interface. The value of the
Transmission mode field
indicates the transmission
standard of the local ADSL
interface, which must be the
same as the transmission
standard of the remote interface.
If the local and remote
interfaces use different
transmission standards, run the
adsl standard command on the
local ADSL interface to change
its transmission standard to be
the same as the transmission
standard of the remote interface.
If "Atm1/0/0 current state : DOWN" is still displayed, go to step 3.
l If "Atm1/0/0 current state : UP" is displayed, ATM1/0/0 is in the Up state. Go to step 2.
Step 2 Check that ATM is correctly configured.
l If IP packets are transmitted over ATM links, check the following items.
Item
Expected Result Follow-up Operation
Run the display
this command in
the ADSL
interface view to
check whether the
IP address of the
local ADSL
interface is on the
same network
segment as the IP
address of the
remote interface.
IP addresses of the local
ADSL interface and the
remote interface are on the
same network segment.
If IP addresses of the local ADSL
interface and the remote interface
are on different network segments,
run the ip address command in the
ADSL interface view to assign the
local ADSL interface an IP address
that is on the same network
segment as the IP address of the
remote interface.
Huawei AR2200-S Series Enterprise Routers
Troubleshooting 5 WAN
Issue 01 (2012-01-06) Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
124
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