hello
i,m trying to setup a BRAS for my huawei OLT (ma 5608) using a mikrotik router(RB750g) but pppoe connecton fails
the problem is that the OLT adds 2 vlan tags to the packet ، i,m using a switch between OLT and mikrotik to remove the outer vlan tag and the inner vlan tag is processed via mikrotik
i have ping between OLT and mikrotik but pppoe connection fails
i have used debug and captured the packets
from my capture i can tell that pppoe connection is established (padi + pado + padr + pads packets are sent and received between devices) but when the LCP phase starts packets from OLT do not reach the mikrotik router meaning that ack packets in response to configuration packets sent via mikrotik device fail to get to mikrotik or they are dropped (i have turned of the firewall)
since ack messages are not received by the mikrotik router it sends another request with the same magic number that causes the OLT to terminate the session (send padt packet)
why pppoe session packets get to the mikrotik but ppp LCP packets dont ? is it because of vlan tag ? or the mikrotik drops them?
if you need any further information please post an email so i can send my capture files to you
my best guess is that i,m not handling the VLANs correctly
thank you
Why are you doing double vlan tagging in Huawei? Wouldn’t it be simpler to only have single tag and avoid having switch between?
You can also use packet sniffer on Mikrotik to check what packets are received.