When a new
service is added to an ME60, PPPoE dialup fails, but the original PPPoE users
on the ME60 function properly. The configuration of the new interface is
confirmed to be the same as that of the original service interface. The key
configuration of the PPPoE user access interface is as follows:
pppoe-server bind Virtual-Template 1
user-vlan 1000 4000 qinq 2629
access-type layer2-subscriber default-domain authentication pppoe
access-limit 2 start-vlan 1000 end-vlan 4000 qinq 2629
1. Collect the
configuration file on the live network. Check that the configuration of the new
interface is confirmed to be the same as that of the original service
2. On the ME60, trace terminal access.
[LN-ME60]trace access-user object 1 mac-add 2089-842E interface GigabitEthernet
The tracing information shows that the PPPoE session stage is not complete
and packet exchanges exist. After the ME60 receives a PADI packet from the
client, the ME60 replies with a PADO packet. The client then initiates a PADR
packet request again. After that, no PADS packets are sent. Instead, error
information is printed as follows.
Mar 4 2017 11:35:19.690.2 LN-ME60 BTRC/7/BTRC_TraceInfo:[objectID=1][slotID=2][PPPOE][user
MAC Address : 2089-842E-XXXX
Interface : GigabitEthernet2/1/3.2629
PE VLAN ID : 2629
CE VLAN ID : 1001
Access Mode : PPPoE ]
[trace info: Find
PPPoE item, but PortIndex or VLANID is invalid, discard this item]
3. Check that the inner VLAN 1001 of the user is within the configuration
scope and the outer VLAN 2629.
4. Use the MAC address to check the user. It is found that the MAC address
has been used for user login.
<LN-ME60-6>dis access-user mac-address 2089-842E-XXXX
User access physical interface
It can be confirmed that the user's MAC address is already online and resides
on interface 2/0/0. The inner label is 1014 and the outer label is 2621, which
is inconsistent with the VLAN information and information about the interface
from where the new user goes online. Therefore, the user fails to go online,
and a tracing error is displayed.
5. Perform a test after the user is logged out from the ME60. The test
a user (MAC XX-XX-XX) already exists on the ME60 and another user (XX-XX-XX)
wants to go online but the interface and VLAN information of the new user is
different from that of the existing online user, packets are discarded. This
problem occurs if the MAC address is cloned.
Check whether a user with the same MAC address has already gone online
from the ME60. If so, log out this user and then try again.