Internet disconnecting more frequently due to attenuation from cisco router
We have Cisco 877 Router, Everything is going fine, but Router doing work fine, But some time router Doesn't flow Traffic & stop working, if I restarted Router then again All is going well, I can't imagine why & What's happening is because of.. I thought it must be due to the power off, but even if the power failed, I would expect it to start up again once the power came back on...
I notice your line attenuation is pretty high at 53.0 dB - this value is the loss of signal strength between the DSLAM and your equipment. Different routers can effect this too, but 53.0db is pretty high and could be effecting the stability if your line. THis could explain why the cisco unit is having issues reconnecting..
It may be that with the billion connected the attenuation is reduced a little.
It will be a greta if anyone suggest me how to resolve this issue
Cisco877#sh dsl int atm 0 ATM0 Alcatel 20190 chipset information ATU-R (DS) ATU-C (US) Modem Status: Showtime (DMTDSL_SHOWTIME) DSL Mode: ITU G.992.1 (G.DMT) Annex A ITU STD NUM: 0x03 0x1 Vendor ID: 'STMI' 'IFTN' Vendor Specific: 0x0000 0x71B9 Vendor Country: 0x0F 0xB5 Chip ID: C196 (0) DFE BOM: DFE3.0 Annex A (1) Capacity Used: 43% 44% Noise Margin: 24.0 dB 27.0 dB Output Power: 16.5 dBm 12.0 dBm Attenuation: 53.0 dB 31.5 dB Defect Status: None None Last Fail Code: None Watchdog Counter: 0x54 Watchdog Resets: 0 Selftest Result: 0x00 Subfunction: 0x00 Interrupts: 8252 (0 spurious) PHY Access Err: 0 Activations: 1 LED Status: ON --More-- LED On Time: 100 LED Off Time: 100 Init FW: init_AMR-3.0.014_no_bist.bin Operation FW: AMR-3.0.014.bin FW Source: embedded FW Version: 3.0.14
Re: Internet disconnecting more frequently due to attenuation f
If the attenuation is indeed at the core of your problem then I am afraid you cannot do much about it yourself. The attenutation is a characteristic of the local loop between your premises and the DSLAM at the telco's central office. If you believe that the local loop is faulty you should call your telco operator and ask him to come and make a test measurement of the local loop transmission characteristics to reensure it is suited for ADSL service.
So I suggest starting with contacting your telco and making tests of your local loop, and if they come out as being fine (verify the attenuation reported by the telco tech person and your 877!) then you should start troubleshooting your router.
I have had one experience with the 836 model whose ADSL modem quality slowly deteriorated over time to the point that the entire 836 had to be replaced. It also manifested itself as outages in the connectivity with sudden, bursty nature of problems, the router being unable to reconnect and requiring physical restart. And I also remember seeing much worse statistics including the attenuation in the show dsl controllers command, similar to yours. After replacing the router, the new one on the same loop reported much better statistics and has been working fine ever since.
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