PPPoE Client does not answer to PADO frame

gusp · October 28, 2012, 8:24am

Hi Gents,

I am newbie to RouterBoards and RouterOS.
I have just bought an RB2011. I would like to use it as a DSLRouter but it doesn’t answer with PADR to PADO frame from the AS.
FW version is 5.20.

PPPoE Client config:

[thegod@LocalGW] > /interface pppoe-client print
Flags: X - disabled, R - running 
 0    name="pppoe-out1" max-mtu=1480 max-mru=1480 mrru=disabled 
      interface=ether1-gateway user="USERNAME@ISP" password="PASSWORD" 
      profile=default service-name="" ac-name="adsl" add-default-route=yes 
      dial-on-demand=no use-peer-dns=yes allow=pap 
[thegod@LocalGW] >

There is nothing useful in the log.

00:53:10 pppoe,ppp,info pppoe-out1: initializing... 
00:53:10 pppoe,ppp,info pppoe-out1: dialing... 
00:53:10 pppoe,debug,packet ether1-gateway: sent PADI to FF:FF:FF:FF:FF:FF 
00:53:10 pppoe,debug,packet     session-id=0x0000 
00:53:10 pppoe,debug,packet     host-uniq=0xf8 
00:53:10 pppoe,debug,packet     service-name= 
00:53:11 pppoe,debug,packet ether1-gateway: sent PADI to FF:FF:FF:FF:FF:FF 
00:53:11 pppoe,debug,packet     session-id=0x0000 
00:53:11 pppoe,debug,packet     host-uniq=0xf8 
00:53:11 pppoe,debug,packet     service-name= 
00:53:12 pppoe,debug,packet ether1-gateway: sent PADI to FF:FF:FF:FF:FF:FF 
00:53:12 pppoe,debug,packet     session-id=0x0000 
00:53:12 pppoe,debug,packet     host-uniq=0xf8 
00:53:12 pppoe,debug,packet     service-name= 
00:53:13 pppoe,ppp,info pppoe-out1: terminating... - disconnected 
00:53:13 pppoe,ppp,debug pppoe-out1: LCP lowerdown 
00:53:13 pppoe,ppp,debug pppoe-out1: LCP down event in initial state 
00:53:13 pppoe,ppp,info pppoe-out1: disconnected 
00:53:23 pppoe,ppp,info pppoe-out1: initializing... 
00:53:23 pppoe,ppp,info pppoe-out1: dialing... 
00:53:23 pppoe,debug,packet ether1-gateway: sent PADI to FF:FF:FF:FF:FF:FF 
00:53:23 pppoe,debug,packet     session-id=0x0000 
00:53:23 pppoe,debug,packet     host-uniq=0xf9 
00:53:23 pppoe,debug,packet     service-name= 
00:53:24 pppoe,debug,packet ether1-gateway: sent PADI to FF:FF:FF:FF:FF:FF 
00:53:24 pppoe,debug,packet     session-id=0x0000 
00:53:24 pppoe,debug,packet     host-uniq=0xf9 
00:53:24 pppoe,debug,packet     service-name= 
00:53:25 pppoe,debug,packet ether1-gateway: sent PADI to FF:FF:FF:FF:FF:FF 
00:53:25 pppoe,debug,packet     session-id=0x0000 
00:53:25 pppoe,debug,packet     host-uniq=0xf9 
00:53:25 pppoe,debug,packet     service-name= 
00:53:26 pppoe,ppp,info pppoe-out1: terminating... - disconnected 
00:53:26 pppoe,ppp,debug pppoe-out1: LCP lowerdown 
00:53:26 pppoe,ppp,debug pppoe-out1: LCP down event in initial state 
00:53:26 pppoe,ppp,info pppoe-out1: disconnected

I have tried to check the traffic between the RB2011 and the DSL Modem therefore I configured a mirror port on RB2011.

[thegod@LocalGW] > /interface ethernet switch print                             Flags: I - invalid           
 #   NAME     TYPE         MIRROR-SOURCE     MIRROR-TARGET     SWITCH-ALL-PORTS
 0   switch1  Atheros-8327 ether1-gateway    ether3           
 1   switch2  Atheros-8227 none              none             
[thegod@LocalGW] >

Proper PADI and PADO frames are visible in the traffic but no PADR.

07:54:11.591862 PPPoE PADI [Host-Uniq 0x000000F8] [Service-Name]
	0x0000:  1109 0000 000c 0103 0004 0000 00f8 0101  ................
	0x0010:  0000 0000 0000 0000 0000 0000 0000 0000  ................
	0x0020:  0000 0000 0000 0000 0000 0000 0000       ..............
07:54:11.642022 PPPoE PADO [Host-Uniq 0x000000F8] [AC-Name "adsl"] [AC-Cookie 0x5A6AACEB3C180FDD4835D224FAC6D560] [Service-Name]
	0x0000:  1107 0000 0028 0103 0004 0000 00f8 0102  .....(..........
	0x0010:  0004 6164 736c 0104 0010 5a6a aceb 3c18  ..adsl....Zj..<.
	0x0020:  0fdd 4835 d224 fac6 d560 0101 0000       ..H5.$...`....
07:54:12.543075 PPPoE PADI [Host-Uniq 0x000000F8] [Service-Name]
	0x0000:  1109 0000 000c 0103 0004 0000 00f8 0101  ................
	0x0010:  0000 0000 0000 0000 0000 0000 0000 0000  ................
	0x0020:  0000 0000 0000 0000 0000 0000 0000       ..............
07:54:13.486719 PPPoE PADI [Host-Uniq 0x000000F8] [Service-Name]
	0x0000:  1109 0000 000c 0103 0004 0000 00f8 0101  ................
	0x0010:  0000 0000 0000 0000 0000 0000 0000 0000  ................
	0x0020:  0000 0000 0000 0000 0000 0000 0000       ..............
07:54:24.479190 PPPoE PADI [Host-Uniq 0x000000F9] [Service-Name]
	0x0000:  1109 0000 000c 0103 0004 0000 00f9 0101  ................
	0x0010:  0000 0000 0000 0000 0000 0000 0000 0000  ................
	0x0020:  0000 0000 0000 0000 0000 0000 0000       ..............
07:54:24.521864 PPPoE PADO [Host-Uniq 0x000000F9] [AC-Name "adsl"] [AC-Cookie 0x5A6AACEB3C180FDD4835D224FAC6D560] [Service-Name]
	0x0000:  1107 0000 0028 0103 0004 0000 00f9 0102  .....(..........
	0x0010:  0004 6164 736c 0104 0010 5a6a aceb 3c18  ..adsl....Zj..<.
	0x0020:  0fdd 4835 d224 fac6 d560 0101 0000       ..H5.$...`....
07:54:25.510309 PPPoE PADI [Host-Uniq 0x000000F9] [Service-Name]
	0x0000:  1109 0000 000c 0103 0004 0000 00f9 0101  ................
	0x0010:  0000 0000 0000 0000 0000 0000 0000 0000  ................
	0x0020:  0000 0000 0000 0000 0000 0000 0000       ..............
07:54:25.542012 PPPoE PADO [Host-Uniq 0x000000F9] [AC-Name "adsl"] [AC-Cookie 0x5A6AACEB3C180FDD4835D224FAC6D560] [Service-Name]
	0x0000:  1107 0000 0028 0103 0004 0000 00f9 0102  .....(..........
	0x0010:  0004 6164 736c 0104 0010 5a6a aceb 3c18  ..adsl....Zj..<.
	0x0020:  0fdd 4835 d224 fac6 d560 0101 0000       ..H5.$...`....
07:54:26.614482 PPPoE PADI [Host-Uniq 0x000000F9] [Service-Name]
	0x0000:  1109 0000 000c 0103 0004 0000 00f9 0101  ................
	0x0010:  0000 0000 0000 0000 0000 0000 0000 0000  ................
	0x0020:  0000 0000 0000 0000 0000 0000 0000       ..............
07:54:26.662389 PPPoE PADO [Host-Uniq 0x000000F9] [AC-Name "adsl"] [AC-Cookie 0x5A6AACEB3C180FDD4835D224FAC6D560] [Service-Name]
	0x0000:  1107 0000 0028 0103 0004 0000 00f9 0102  .....(..........
	0x0010:  0004 6164 736c 0104 0010 5a6a aceb 3c18  ..adsl....Zj..<.
	0x0020:  0fdd 4835 d224 fac6 d560 0101 0000       ..H5.$...`....

I have tried to sniff the traffic by an ethernet hub but the result was the same.

Has anyone met with similar problem?

Thanks in andvance for your help!

/Gusti

jandafields · October 30, 2012, 3:53pm

Is this one of those real small Motorola DSL modems? If so, there is a known bug with those modems that doesn’t allow Bridge Mode or PPPoE Passthrough to work properly. This is a problem with certain Motorola DSL modems, NOT with Mikrotik.

You can google for it and find lots of information (but no solutions).

If that is NOT the case, then make sure your DSL modem is in PPPoE passthru or Bridge Mode.

The Mikrotik definately works with PADO/PADR frames. I use it that way myself.

If it doesn’t work, it is the fault of the modem, not the router.

gusp · October 31, 2012, 8:03am

Hi,

Thanks for your suggestion, but I have D-Link DSL modem.

I have contacted the reseller and I got the hint to use the QuickSet interface to Initial Configuration.
After a /system reset-configuration I could configure the pppoe-client properly through QuickSet but I had to redefine the interface to be used by pppoe-client because sfp-gateway was defined as interface to be used by QuickSet instead of ether1-gateway.

Best Regards,
/Gusti