MikroTik

Hi
I am having an issue: I cannot make the PPPOE work on the RB1100 AH.
If the PPPOE is done by the modem I do not have any issues., and it is working correctly.
I am using 5.19 with 2.39 firmware.

If I set the modem in bridge mode it is alternating between authenticating and disconnected

The debug info are as follows:
00:12:43 pppoe,ppp,debug,packet pppoe-out1: rcvd LCP TermAck id=0x24
00:12:43 pppoe,ppp,debug pppoe-out1: LCP lowerdown
00:12:43 pppoe,ppp,info pppoe-out1: terminating... - failed to authenticate
00:12:43 pppoe,debug,packet ether2: sent PADT to 00:00:00:00:00:00
00:12:43 pppoe,debug,packet session-id=0xe31c
00:12:44 pppoe,ppp,debug pppoe-out1: LCP lowerdown
00:12:44 pppoe,ppp,debug pppoe-out1: LCP down event in initial state
00:12:44 pppoe,ppp,info pppoe-out1: disconnected
00:12:54 pppoe,ppp,info pppoe-out1: initializing...
00:12:54 pppoe,ppp,info pppoe-out1: dialing...
00:12:54 pppoe,debug,packet ether2: sent PADI to FF:FF:FF:FF:FF:FF
00:12:54 pppoe,debug,packet session-id=0x0000
00:12:54 pppoe,debug,packet host-uniq=0x1a
00:12:54 pppoe,debug,packet service-name=
00:12:54 pppoe,debug,packet ether2: rcvd PADO from 00:07:7D:D7:A5:20
00:12:54 pppoe,debug,packet session-id=0x0000
00:12:54 pppoe,debug,packet vendor-specific=00 00 0d e9 01 1a 6c 73 6b 69
6e 2d 32 20 61 74 6d 20 31 2f 31 2f 31 32 2f 32 37 3a 30 2e 33 38 02 0b 30 32
30 38 35 34 39 35 30 35 36 81 04 00 00 03 e0 82 04 00 00 0d c0
00:12:54 pppoe,debug,packet host-uniq=0x1a
00:12:54 pppoe,debug,packet service-name=
00:12:54 pppoe,debug,packet ac-name=TCH-W-LAC-ED-ASR
00:12:54 pppoe,debug,packet ac-cookie=cf 26 87 28 66 10 a5 67 69 ad fd ef
a8 4a 4d df
00:12:54 pppoe,debug,packet ether2: sent PADR to 00:07:7D:D7:A5:20
00:12:54 pppoe,debug,packet session-id=0x0000
00:12:54 pppoe,debug,packet host-uniq=0xffffffff
00:12:54 pppoe,debug,packet service-name=
00:12:54 pppoe,debug,packet ac-cookie=cf 26 87 28 66 10 a5 67 69 ad fd ef
a8 4a 4d df
00:12:54 pppoe,debug,packet ether2: rcvd PADO from 54:75:D0:5B:9F:A0
00:12:54 pppoe,debug,packet session-id=0x0000
00:12:54 pppoe,debug,packet vendor-specific=00 00 0d e9 01 1a 6c 73 6b 69
6e 2d 32 20 61 74 6d 20 31 2f 31 2f 31 32 2f 32 37 3a 30 2e 33 38 02 0b 30 32
30 38 35 34 39 35 30 35 36 81 04 00 00 03 e0 82 04 00 00 0d c0
00:12:54 pppoe,debug,packet host-uniq=0x1a
00:12:54 pppoe,debug,packet service-name=
00:12:54 pppoe,debug,packet ac-name=THN-W-LAC-ED-ASR
00:12:54 pppoe,debug,packet ac-cookie=a8 ce 4a d6 7c 56 6c 7f 3d ae a8 e2
e2 ed cc 13
00:12:54 pppoe,debug ether2: received PADO with unknown host-uniq, dropping
00:12:54 pppoe,debug,packet ether2: rcvd PADS from 00:07:7D:D7:A5:20
00:12:54 pppoe,debug,packet session-id=0xe375
00:12:54 pppoe,debug,packet vendor-specific=00 00 0d e9 01 1a 6c 73 6b 69
6e 2d 32 20 61 74 6d 20 31 2f 31 2f 31 32 2f 32 37 3a 30 2e 33 38 02 0b 30 32
30 38 35 34 39 35 30 35 36 81 04 00 00 03 e0 82 04 00 00 0d c0
00:12:54 pppoe,debug,packet host-uniq=0xffffffff
00:12:54 pppoe,debug,packet service-name=
00:12:54 pppoe,debug,packet ac-cookie=cf 26 87 28 66 10 a5 67 69 ad fd ef
a8 4a 4d df
00:12:54 pppoe,ppp,debug pppoe-out1: LCP lowerup
00:12:54 pppoe,ppp,debug pppoe-out1: LCP open
00:12:54 pppoe,ppp,debug pppoe-out1: LCP timer
00:12:54 pppoe,ppp,debug,packet pppoe-out1: sent LCP ConfReq id=0x25
00:12:54 pppoe,ppp,debug,packet <mru 1480>
00:12:54 pppoe,ppp,debug,packet <magic 0x2f659623>
00:12:54 pppoe,ppp,debug,packet pppoe-out1: rcvd LCP ConfReq id=0x1
00:12:54 pppoe,ppp,debug,packet <mru 1492>
00:12:54 pppoe,ppp,debug,packet <magic 0x677742b3>
00:12:54 pppoe,ppp,debug,packet <auth chap>
00:12:54 pppoe,ppp,debug,packet pppoe-out1: sent LCP ConfAck id=0x1
00:12:54 pppoe,ppp,debug,packet <mru 1492>
00:12:54 pppoe,ppp,debug,packet <magic 0x677742b3>
00:12:54 pppoe,ppp,debug,packet <auth chap>
00:12:54 pppoe,ppp,debug,packet pppoe-out1: rcvd LCP ConfAck id=0x25
00:12:54 pppoe,ppp,debug,packet <mru 1480>
00:12:54 pppoe,ppp,debug,packet <magic 0x2f659623>
00:12:54 pppoe,ppp,debug pppoe-out1: LCP opened
00:12:54 pppoe,ppp,debug,packet pppoe-out1: rcvd CHAP Challenge id=0x1
00:12:54 pppoe,ppp,debug,packet <challenge len=10>
00:12:54 pppoe,ppp,debug,packet <name TCH-W-LAC-ED-ASR>
00:12:54 pppoe,ppp,debug,packet pppoe-out1: sent CHAP Response id=0x1
00:12:54 pppoe,ppp,debug,packet <response len=10>
00:12:54 pppoe,ppp,debug,packet <name removed@removed>
00:12:54 pppoe,ppp,debug,packet pppoe-out1: rcvd LCP ConfReq id=0x1
00:12:54 pppoe,ppp,debug,packet <magic 0x3cea24ab>
00:12:54 pppoe,ppp,debug,packet <auth chap>
00:12:54 pppoe,ppp,debug pppoe-out1: LCP received dup ConfReq
00:12:54 pppoe,ppp,debug,packet pppoe-out1: sent LCP ConfAck id=0x1
00:12:54 pppoe,ppp,debug,packet <magic 0x3cea24ab>
00:12:54 pppoe,ppp,debug,packet <auth chap>
00:12:57 pppoe,ppp,debug,packet pppoe-out1: sent CHAP Response id=0x1
00:12:57 pppoe,ppp,debug,packet <response len=10>
00:12:57 pppoe,ppp,debug,packet <name removed@removed>
00:12:57 pppoe,debug,packet ether2: rcvd PADT from 00:07:7D:D7:A5:20
00:12:57 pppoe,debug,packet session-id=0xe14a
00:13:00 pppoe,ppp,debug,packet pppoe-out1: sent CHAP Response id=0x1
00:13:00 pppoe,ppp,debug,packet <response len=10>
00:13:00 pppoe,ppp,debug,packet <name removed@removed>
00:13:03 pppoe,ppp,debug,packet pppoe-out1: sent CHAP Response id=0x1
00:13:03 pppoe,ppp,debug,packet <response len=10>
00:13:03 pppoe,ppp,debug,packet <name removed@removed>
00:13:06 pppoe,ppp,debug,packet pppoe-out1: sent CHAP Response id=0x1
00:13:06 pppoe,ppp,debug,packet <response len=10>
00:13:06 pppoe,ppp,debug,packet <name removed@removed>
00:13:09 pppoe,ppp,debug,packet pppoe-out1: sent CHAP Response id=0x1
00:13:09 pppoe,ppp,debug,packet <response len=10>
00:13:09 pppoe,ppp,debug,packet <name removed@removed>
00:13:12 pppoe,ppp,debug,packet pppoe-out1: sent CHAP Response id=0x1
00:13:12 pppoe,ppp,debug,packet <response len=10>
00:13:12 pppoe,ppp,debug,packet <name removed@removed>
00:13:15 pppoe,ppp,debug,packet pppoe-out1: sent CHAP Response id=0x1
00:13:15 pppoe,ppp,debug,packet <response len=10>
00:13:15 pppoe,ppp,debug,packet <name removed@removed>
00:13:18 pppoe,ppp,debug,packet pppoe-out1: sent CHAP Response id=0x1
00:13:18 pppoe,ppp,debug,packet <response len=10>
00:13:18 pppoe,ppp,debug,packet <name removed@removed>
00:13:21 pppoe,ppp,debug,packet pppoe-out1: sent CHAP Response id=0x1
00:13:21 pppoe,ppp,debug,packet <response len=10>
00:13:21 pppoe,ppp,debug,packet <name removed@removed>


If the PPPOE is done by the modem I do not have any issues., and it is working correctly.
I am using 5.19 with 2.39 firmware.
Any clue of what the issue might be?
Thanks
Stefano

Hello.
I'm no expert in this and I'm not using 1100 but RB750G so maybe it's not similar but here's how I did it.
In WinBox I click on Interfaces and add new PPPoE client interface. Name of the interface doesn't really matter, mine came up with pppoe-out1 and I left it at that. On the first tab I only selected the interface I wanted PPPoE to use, my case it's ether1-gateway. On the second tab, Dial Out, I put in the User, Password, left the profile on default. Checked the Dial on Demand box and Use Peer DNS and left the Allow boxes checked. If this is what you did then I don't think can be of more help. You might want to look at the config in the modem/router. I'm using ADSL router and I just bridge it so it isn't a router anymore but a modem. I put a private address on the external interface on the Mikrotik and also on the ADSL router, just to make them able to talk together. F.ex. on ether1-gateway I'd put 192.168.10.2/24 and on the ADSL router (which is in bridged mode) I put 192.168.10.1/24 on the inner interface. You can use a smaller subnet, I didn't bother.
This way the MikroTik knows where to connect to. This works on RB750G.
Hope this helps. Either way, please let me/us know, it is always good to know what works and what not.

I would verify all settings are identical from your previous PPPoE session in the modem. I'm guessing something is set in the Mikrotik that wasn't in the modem.

I don't see anything definitive, but two things stand out

1) MTU - The BRAS is wanting to negotiate to 1492 and your PPPoE client is asking for 1480
2) You are receiving PADO packets from two different BRAS servers...do you have a PPPoE server running in a Mikrotik somewhere?

Hi Burkni and IPANetEngineer
Thanks for the replies.
I have set the pppoe on the Mikotik as Burkni suggested, with the only difference being the "dial on demand". I have tried with that option ticked too. On the modem I only had to set VPI and VCI, as it is a basic consumer modem. When it was doing the pppoa I had to set username and password along with VPI and VCI, but no further configs.

IPANetEngineer, I have tried with 1492 as MTU too, no joy.
The Mikrotik is receiving two PADO packets, one from the carriers's LAC and one from ours in the datacentre.

Could it be that the problem is caused by this?
00:12:54 pppoe,debug ether2: received PADO with unknown host-uniq, dropping

I have found this post
http://forum.mikrotik.com/viewtopic.php?f=2&t=46384
where some users are having the same issue..
Thanks