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zebu

join:2012-11-28
Salisbury, MA

[Connectivity] modem logs concern

I recently had a really bad connection problem that comcast promised they fixed by changing the entire line to my house. Well anyways, it looks fine but there is a concern I have.
In my modem logs there are three lines I want to know what they mean.

DS multicast is not mapped to SAID
Map Reject - Downstream Traffic Flow Not Mapped to BPI+ SAID
SA Map State Machine Started

Is it something I should worry about or just leave it alone?



EG
The wings of love
Premium
join:2006-11-18
Union, NJ
kudos:9

Those are usually benign errors. What do the modem's signal stat figures look like ? Try getting them here »192.168.100.1 or here »10.0.0.1

Please post the downstream power level, the upstream power level, and the SNR numbers.


zebu

join:2012-11-28
Salisbury, MA

downstream : 14 db (tech said it was fine and no big deal)
upstream : 40 db (used to be 54 db which was the major problem)
SNR 37 db



pflog
Bueller? Bueller?
Premium,MVM
join:2001-09-01
El Dorado Hills, CA
kudos:3

said by zebu:

downstream : 14 db (tech said it was fine and no big deal)
upstream : 40 db (used to be 54 db which was the major problem)
SNR 37 db

14dB is too high, it should be less than 10. The closer to 0 the better.

40 is ok, but ideally would be a little higher for the upstream power.

SNR is fine.
--
"Women. Can't live with 'em, pass the beer nuts." -Norm


EG
The wings of love
Premium
join:2006-11-18
Union, NJ
kudos:9

1 recommendation

reply to zebu

Agree with pflog See Profile but FWIW, that high downstream power will not cause those particular errors. Are you having any ongoing connectivity issues ? If not, don't sweat it.



tshirt
Premium,MVM
join:2004-07-11
Snohomish, WA
kudos:4
Reviews:
·Comcast
reply to zebu

Did your downstream power used to be zero?? (kind of wondering if /how this was padded/ changed, and IF it was equal on each side, WHY go quite that much?)
Each plant is different and your modem is not a precision meter, BUT if accurate, 4-5 points lower on the DS side and 4-5 point higher on the US would be in the very good range pretty much anywhere.
The SAID message isn't a problem if you see it a few times, if you get dozens or hundreds a day you have problems.


zebu

join:2012-11-28
Salisbury, MA

I had ongoing connectivity issue but I had the comcast tech change my line and check out the pole and they're monitoring it atm.
I thought I would stop getting a critical-3 error but I got another one just now. I didn't experience drop of connection but it worries me

No Ranging Response received - T3 time-out

if someone knows what it precisely means, it would help.