1. Run the display location mac-addr command to check multiple times (more than three
times is recommended) whether a MAC address drift occurred on the port that has learned
the BRAS MAC address.
l If the MAC address drift has occurred, go to Step 9.2.
l If no MAC address drift has occurred, go to Step 10.
NOTE
l The mac-addr parameter indicates the MAC address of the BRAS.
l The F/S/P parameter in the query result indicates the uplink port where the BRAS MAC address
has been learned. Generally, the port displayed in the query result should be the uplink port on
the MA5612 connected to the BRAS. If the displayed port is not the uplink port, the BRAS MAC
address drift has occurred.
2. Check whether a loop has formed or whether there are user attacks on the port to which the
user's MAC address has drifted. If such a problem occurs, disconnect the loop or deactivate
the port where the user attacks are initiated. Then, perform another dialup check.
l If the dialup is successful, go to Step 15.
l If the dialup fails, go to Step 10.
Step 10 Check whether the security configuration on the MA5612 is correct.
1. Run the display security config command to check whether the anti-MAC address
spoofing function is enabled.
l If the function is enabled, go to Step 10.2.
l If the function is not enabled, go to Step 11.
2. Run the display mac-address static command to check whether a static MAC address is
configured on the service port of the user.
NOTE
If a static MAC address and the anti-MAC address spoofing function are configured on a service port
at the same time, the service port user cannot access the Internet.
l If a static MAC address is configured on the service port, go to Step 10.3.
l If no static MAC address is configured on the service port, go to Step 11.
3. Run the security anti-macspoofing disable command to disable the anti-MAC address
spoofing function on the service port or run the undo mac-address static command to
delete the static MAC address configured on the port based on the service planning. Then,
perform another dialup check.
l If the dialup is successful, go to Step 15.
l If the dialup fails, go to Step 11.
Step 11 Check whether an ACL restricting the transmission of PPPoE packets is configured on the
MA5612.
1. Run the display packet-filter port frameid/slotid/portid command to check whether an
ACL is configured on the user port.
l If an ACL is configured, go to Step 11.2.
l If no ACL is configured, go to Step 12.
2. Run the display acl command to check whether the ACL restricts the transmission of
PPPoE packets.
l If the ACL restricts the transmission of PPPoE packets, go to Step 11.3.
l If the ACL does not restrict the transmission of PPPoE packets, go to Step 12.
SmartAX MA5612 Multi-service Access Module
Maintenance Guide
5 Troubleshooting Services Transmitted Through a GPON
Port
Issue 01 (2012-07-25) Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
121
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