There was no Internet connection this morning and I looked at the router - the CD light was blinking fast.
Router did not respond to SSH connection and I plugged in the console cable.
sh run had factory default configuration. So I've restored the last running config, but still would not have Internet.
CD light continues to flash frequently and this is what router reports:
#sh dsl int atm0
Alcatel 20190 chipset information
Line has not yet been activated.
Modem Status: Down (DMTDSL_DO_OPEN)
DSL Mode: Unknown
Interrupts: 8238 (0 spurious)
PHY Access Err: 0
LED Status: OFF
LED On Time: 100
LED Off Time: 100
Init FW: init_AMR-4.0.015.bin
Operation FW: AMR-4.0.015.bin
FW Source: external
DSL: Training log buffer capability is not enabled
As of now I am connected thru a combination of SpeedTouch modem and DLink router as a backup.
Is there any way to diagnose what is missing for the DSL connection to be established by 877?
your config looks ok. to troubleshoot, try to connect your laptop/PC directly on any spare FE ports on your 877 and assign static IPs on the 10.10.10.0/24 subnet. ping your GW 10.10.10.1 and on the SP side. i bet you would expect replies from the router GW and time out from the SP. if you detect CD light is blinking fast, this automatically indicates an ADSL sync problem. check for any Layer 1 issues (RJ11, splitter) and report this to your SP/telco and have this fixed.
I myself have had issues with the auto training mode on serveral 877s. When the ATM interface was set to auto it never trained up. Once I set "dsl operating-mode ansi-dmt" it worked flawlessly. If you do not know what mode your carrier supports you might want to give each a try.
adsl2 ITU G.992.3 Annex A and L
adsl2+ ITU G.992.5 Annex A
ansi-dmt ANSI T1.413
itu-dmt ITU G.992.1 Annex A
I don't understand why you're unable to troubleshoot using simple pings. I used the command dsl enable-training-log before but couldn't even interpret it unless you open a TAC case. You mentioned this works with your back up router and I've seen this kind of situation before. I would suggest to replace the 877's power adapter and try to test again.
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What specifically are you proposing to ping?
I am sceptical about 'simple pings' because we are facing an issue with training to the telco's ADSL signal. Do you really understand what is the issue here? See, there would be nothing to ping on the WAN until carrier is detected and PPP authenticated. Does it help?