Item
Description
Follow-up Operation
Check that the
connection and
cable between the
local and remote
interfaces and
modules on
interfaces are
working properly.
If the
Alarm State
field is
displayed as
Loss-of-Signal
,
the following faults may occur:
1. The local and remote
interfaces are not properly
connected.
2. The interface modules fail.
3. The cable between the two
interfaces is disconnected.
Connect the two interfaces
properly. If the fault persists,
replace the cable or interface
board.
Check the working
mode of the local
and remote
interfaces.
The
Work Mode
field indicates
the working mode of an
interface:
l
E1 FRAMED: The interface
works in framed mode.
l
E1 UNFRAMED: The
interface works in unframed
mode.
The local and remote interfaces
must work in framed mode.
If the local and remote
interfaces work in unframed
mode, run the
pri-set
command
on the CE1 interface view to set
the working mode to framed
mode.
Check whether the
local and remote
interfaces use the
same frame
format.
The
Frame-format
field
indicates the frame format of an
interface:
l
CRC4: The frame is a multi-
frame.
l
NO-CRC4: The frame is a
basic frame, which is also
called a dual-frame or an
odd-even frame.
The local and remote interfaces
must use the same frame format.
If the local and remote
interfaces use different frame
formats, run the
frame-format
command in the CE1 interface
view to reconfigure the frame
format so that the two interfaces
use the same frame format.
Check whether the
local and remote
interfaces use the
same encoding and
decoding mode.
The
Line Code
field indicates
the encoding and decoding
mode of an interface. The value
is HDB3.
The local and remote interfaces
must use the same encoding and
decoding mode.
If the remote interface does not
use the HDB3 mode, change it
to the HDB3 mode so that the
local and remote interfaces use
the same mode.
Check whether the
clock mode is
correctly
configured for the
local and remote
interfaces.
When two routers are directly
connected using two CE1
interfaces, the two CE1
interfaces work in master clock
mode and slave clock mode
respectively.
If the clock mode is incorrectly
configured for the local and
remote interfaces, run the
clock
command in the CE1
interface view to correctly
configure the clock mode.
Huawei AR2200-S Series Enterprise Routers
Troubleshooting
5 WAN
Issue 01 (2012-01-06)
Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
109