Guide To Restarting A Device - Huawei ME60 Emergency Maintenance

HUAWEI ME60 Multiservice Control Gateway
Emergency Maintenance
transmission test to check whether the number of packets changes. After the local loopback
test is complete, run the undo loopback command to disable the local loopback.
Step 4 Check and modify the data link layer or upper layer protocol.
If the interface still fails to send and receive packets in the local loopback test, check the data
link layer or upper layer protocol. For example, check whether the Point-to-Point Protocol
(PPP) or the High level Data Link Control (HDLC) protocol at both ends is identical and the
routing protocol runs normally.
Step 5 Reset the interface.
If the fault persists after the preceding steps are performed, you can reset the interface to solve
the problem.
Run the shutdown command to disable the interface, and then run the undo shutdown
command to enable the interface to reset the interface.
Step 6 Seek Huawei technical support.
Seek Huawei technical support according to 1.6 Technical Support.
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3.3 Guide to Restarting a Device

This section guides you how to restart a device when a fault on the device causes services to
be interrupted and the device fails to restart automatically.
When a critical fault occurs on the ME60 during the equipment running, the ME60 is
automatically restarted. After the restart, the ME60 runs normally. The ME60 needs to be
restarted manually only in emergency or exception, for example, services are interrupted
because of the fault occurred on the ME60, and the ME60 fails to automatically restart or
recover by using other methods.
Issue 01 (2017-11-10)
The procedures of testing the receiving and sending of packets through the ping command in Ethernet
interfaces are as follows:
1. Run the arp static ip-address mac-address command in the system view to construct an IP address
on the same segment with the faulty interface and a MAC address in the local ARP table. You can
select the MAC address at will, but it cannot be the local MAC address, a broadcast or multicast
address. The feature of broadcast or multicast address is: the 8th bit of MAC address is 1.
2. Run the ping command in the view of the faulty interface ( it does not matter that ping succeed or
failed. ) to send a certain number of ping packets to the constructed IP address.
3. Run the display this interface command in the view of the faulty interface to check whether the
number of received and sends packets are correct. Because the ARP is just configured, the first ping
may discard a few packets. Ping for the second time, the number of received and sent packets will
equal. If so, the local loopback test is successful and this indicates that the local interface is normal.
4. Run undo arp static command to delete the MAC address, and run undo loopback command in the
interface view to disable the local loopback.
The above operation can only locate a faulty interface. If the interface is OK, maybe the optical module
is faulty. You can location optical module faulty as follows: connect the RX and TX ports of optical
module with two ends of an optical fiber, and run undo shutdown in interface view to test the receiving
and sending of packets again.
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