DGND3700 V1 - PPPoE problems with my ISP

[yonesmit]

Hello All,

I have a problem to connect to my ISP using PPPoE, the connection parameters are:

VPI: 8
VCI: 32
Encapsulation: LLC
Protocol: PPPoE
username (common for all users): adslppp@telefonicanetpa
password (common for all users): adslppp

I used these parameters with other routers and ALL OF THEM connect successfully (including other netgear routers as DG834Gv3 and DGN2000).
The problem is that when I setup DGND3700v1 it doesn't connect correctly. The ADSL link is correct, I see the led and the status screen displays it is connected but the PPPoE never get IP from the ISP.
I tried changing config to PPPoA and reducing the MTU, nothing works.

I also tested with Richud firmware and using SSH I see that the firmware is running this command:
pppd -c ppp0 -i atm0 -u adslppp@telefonicanetpa -p adslppp -t 1492 -f 0 -k

I killed this process and run it with -d command to get the debug output. It's the following:

~ # pppd -d -c ppp0 -i atm0 -u adslppp@telefonicanetpa -p adslppp -t 1492 -f 0 -k
Sending PADI
Sent packet: Ether addr: ff:ff:ff:ff:ff:ff
 (PPPOE Discovery)
 PPPoE hdr: ver=0x1 type=0x1 code=0x09 sid=0x0000 length=0x000c (PADI)
 PPPoE tag: type=0103 length=0004 (Host Uniq) data (bin):  00 48 d0 08 PPPoE tag: type=0101 length=0000 (Service name)
Recv'd packet: Ether addr: ac:4b:c8:80:c0:52
 (PPPOE Discovery)
 PPPoE hdr: ver=0x1 type=0x1 code=0x07 sid=0x0000 length=0x002f (PADO)
 PPPoE tag: type=0102 length=000b (AC Name) data (UTF-8): rbatgrc1-01 PPPoE tag: type=0103 length=0004 (Host Uniq) data
HOST_UNIQ successful match
Sent packet: Ether addr: ac:4b:c8:80:c0:52
 (PPPOE Discovery)
 PPPoE hdr: ver=0x1 type=0x1 code=0x19 sid=0x0000 length=0x0020 (PADR)
 PPPoE tag: type=0101 length=0000 (Service name) PPPoE tag: type=0103 length=0004 (Host Uniq) data (bin):  00 48 d0 08 PPP
Recv'd packet: Ether addr: ac:4b:c8:80:c0:52
 (PPPOE Discovery)
 PPPoE hdr: ver=0x1 type=0x1 code=0x65 sid=0x01c2 length=0x002f (PADS)
 PPPoE tag: type=0101 length=0000 (Service name) PPPoE tag: type=0103 length=0004 (Host Uniq) data (bin):  00 48 d0 08 P
HOST_UNIQ successful match
Got connection: 1c2
using channel 2
Using interface ppp0
Connect: ppp0 <--> atm0
Couldn't increase MTU to 1500.
Couldn't increase MRU to 1500
sent [LCP ConfReq id=0x1 ]
rcvd [LCP ConfReq id=0x5  ]
sent [LCP ConfAck id=0x5  ]
rcvd [LCP ConfAck id=0x1 ]
Couldn't increase MTU to 1500.
sent [LCP EchoReq id=0x0 magic=0x8865b415]
rcvd [LCP EchoRep id=0x0 magic=0x5badc802]
rcvd [CHAP Challenge id=0x2e <2eff40f9c979da669069574a7e4aae1d9609eaf2d1e4dcf49eeb92402c>, name = "JUNOS"]
sent [CHAP Response id=0x2e <7c6e5e496d5798ac0529e8b1dc7d6655>, name = "adslppp@telefonicanetpa"]
sent [CHAP Response id=0x2e <7c6e5e496d5798ac0529e8b1dc7d6655>, name = "adslppp@telefonicanetpa"]
sent [CHAP Response id=0x2e <7c6e5e496d5798ac0529e8b1dc7d6655>, name = "adslppp@telefonicanetpa"]
sent [CHAP Response id=0x2e <7c6e5e496d5798ac0529e8b1dc7d6655>, name = "adslppp@telefonicanetpa"]
sent [CHAP Response id=0x2e <7c6e5e496d5798ac0529e8b1dc7d6655>, name = "adslppp@telefonicanetpa"]
sent [CHAP Response id=0x2e <7c6e5e496d5798ac0529e8b1dc7d6655>, name = "adslppp@telefonicanetpa"]
sent [CHAP Response id=0x2e <7c6e5e496d5798ac0529e8b1dc7d6655>, name = "adslppp@telefonicanetpa"]
sent [CHAP Response id=0x2e <7c6e5e496d5798ac0529e8b1dc7d6655>, name = "adslppp@telefonicanetpa"]
sent [CHAP Response id=0x2e <7c6e5e496d5798ac0529e8b1dc7d6655>, name = "adslppp@telefonicanetpa"]
sent [CHAP Response id=0x2e <7c6e5e496d5798ac0529e8b1dc7d6655>, name = "adslppp@telefonicanetpa"]
sent [LCP EchoReq id=0x1 magic=0x8865b415]
sent [CHAP Response id=0x2e <7c6e5e496d5798ac0529e8b1dc7d6655>, name = "adslppp@telefonicanetpa"]
sent [CHAP Response id=0x2e <7c6e5e496d5798ac0529e8b1dc7d6655>, name = "adslppp@telefonicanetpa"]
sent [CHAP Response id=0x2e <7c6e5e496d5798ac0529e8b1dc7d6655>, name = "adslppp@telefonicanetpa"]

The last lines are repeated forever and the connection doesn't progress.

Any idea what can be happening?? What can I do to fix this issue?

Thanks in advance.
Best Regards,

[richud]

you should get only one line of that [CHAP Response line, then a line starting
rcvd [CHAP Success id=0x2e


-t 1500 ?

very strange 🙂
[pppd program has been hacked/patched by broadcomm/foxconn/netgear so it can't just be replaced with a newer version easily, if it is a bug in that]

I am just working on a new firmware based on the 3800 codebase and the newest ADSL phy for the dgnd3700v1 if you want to try that, I will hopefully put out a beta next w/e. I dont think pppd has changed though if that is the problem.

[yonesmit]

Hello Richud,

thank you very much for your help. I will test all that I can because I want to use this router to replace a DG834V3. I also tested LuKePicci's V3 based firmware for V1 with exactly the same result. So I think it's a netgear's pppd problem but I don't get support from them.

Thanks for your help

[yonesmit]

Hello,

I've set up a router in bridge mode to test if I can connect to my ISP PPPoE using WAN port and it works:

~ #  pppd -d -c ppp0 -i eth0 -u adslppp@telefonicanetpa -p adslppp -t 1492 -f 0 -k
Sending PADI
Sent packet: Ether addr: ff:ff:ff:ff:ff:ff
 (PPPOE Discovery)
 PPPoE hdr: ver=0x1 type=0x1 code=0x09 sid=0x0000 length=0x000c (PADI)
 PPPoE tag: type=0101 length=0000 (Service name) PPPoE tag: type=0103 length=0004 (Host Uniq) data (bin):  00 48 d0 08
Recv'd packet: Ether addr: ac:4b:c8:80:c0:52
 (PPPOE Discovery)
 PPPoE hdr: ver=0x1 type=0x1 code=0x07 sid=0x0000 length=0x002f (PADO)
 PPPoE tag: type=0102 length=000b (AC Name) data (UTF-8): rbatgrc1-01 PPPoE tag: type=0103 length=0004 (Host Uniq) data
HOST_UNIQ successful match
Sent packet: Ether addr: ac:4b:c8:80:c0:52
 (PPPOE Discovery)
 PPPoE hdr: ver=0x1 type=0x1 code=0x19 sid=0x0000 length=0x0020 (PADR)
 PPPoE tag: type=0101 length=0000 (Service name) PPPoE tag: type=0103 length=0004 (Host Uniq) data (bin):  00 48 d0 08 PPP
Recv'd packet: Ether addr: ac:4b:c8:80:c0:52
 (PPPOE Discovery)
 PPPoE hdr: ver=0x1 type=0x1 code=0x65 sid=0x01a0 length=0x002f (PADS)
 PPPoE tag: type=0101 length=0000 (Service name) PPPoE tag: type=0103 length=0004 (Host Uniq) data (bin):  00 48 d0 08 P
HOST_UNIQ successful match
Got connection: 1a0
using channel 2
Using interface ppp0
Connect: ppp0 <--> eth0
Couldn't increase MTU to 1500.
Couldn't increase MRU to 1500
sent [LCP ConfReq id=0x1 ]
rcvd [LCP ConfReq id=0xbc  ]
sent [LCP ConfAck id=0xbc  ]
rcvd [LCP ConfAck id=0x1 ]
Couldn't increase MTU to 1500.
sent [LCP EchoReq id=0x0 magic=0x4702af34]
rcvd [CHAP Challenge id=0xf8 , name = "JUNOS"]
sent [CHAP Response id=0xf8 , name = "adslppp@telefonicanetpa"]
rcvd [LCP EchoRep id=0x0 magic=0x451960e3]
rcvd [CHAP Success id=0xf8 ""]
sent [IPCP ConfReq id=0x1   ]
rcvd [IPCP ConfNak id=0x1   ]
sent [IPCP ConfReq id=0x2   ]
rcvd [IPCP ConfAck id=0x2   ]
rcvd [IPCP ConfReq id=0x9d ]
sent [IPCP ConfAck id=0x9d ]
Failed to create /var/fyi/sys/dns: No such file or directory
local  IP address xxx.xxx.xxx.xxx
remote IP address 192.168.144.1
primary   DNS address xxx.xxx.xxx.xxx
secondary DNS address xxx.xxx.xxx.xxx
Failed to create /var/fyi/sys/gateway: No such file or directory
Failed to create /var/fyi/sys/dns: No such file or directory
PPP: ppp0 Connection Up.
Script /var/ppp/ip-up started (pid 1451)
Script /var/ppp/ip-up finished (pid 1451), status = 0x0
rcvd [LCP EchoReq id=0x0 magic=0x451960e3]
sent [LCP EchoRep id=0x0 magic=0x4702af34]

So it may be a problem in atm device or in adsl drivers. I really don't know what can I do to fix this issue.

Best Regards,