General Discussion
  >> General Broadband Chatter


Register (or login) on our website and you will not see this ad.


  Print Thread
Standard User FarmerGilesUK
(learned) Sat 02-Apr-11 14:01:22
Print Post

Is this normal ?


[link to this post]
 
Hi all

Attached is a snapshot from RouterStats last night. You can see that there were 5 sudden drops in SNR at around 02:30-02:45. Unsurprisingly this caused quite a few CRC errors and today there is an overall drop in SNR margin of about 2dB.

Is this what one would expect to see from time to time on a 7km line (63.5dB attenuation) or is this an indication that the line has a possible fault?

RouterStats Snapshot

Stats from my Speedtouch.

Uptime: 2 days, 5:36:56
Modulation: G.992.1 Annex A
Bandwidth (Up/Down) [kbps/kbps]: 448 / 1,920
Data Transferred (Sent/Received) [MB/MB]: 64.83 / 681.31
Output Power (Up/Down) [dBm]: 11.5 / 17.0
Line Attenuation (Up/Down) [dB]: 31.5 / 63.5
SN Margin (Up/Down) [dB]: 6.0 / 6.0
Vendor ID (Local/Remote): TMMB / ALCB
Loss of Framing (Local/Remote): 0 / 0
Loss of Signal (Local/Remote): 0 / 0
Loss of Power (Local/Remote): 0 / 0
Loss of Link (Remote): 0
Error Seconds (Local/Remote): 513 / 0
FEC Errors (Up/Down): 0 / 97,940
CRC Errors (Up/Down): 0 / 2,552
HEC Errors (Up/Down): 0 / 2,020

Regards
Administrator MrSaffron
(staff) Sat 02-Apr-11 15:06:43
Print Post

Re: Is this normal ?


[re: FarmerGilesUK] [link to this post]
 
To be expected on any service that relies on RF and is subject to broad spectrum interference from external sources.

Not indicative of a fault in isolation, if a similar patterns occurs everynight then suspect something on a timer in the property or next door.

Andrew Ferguson, andrew@thinkbroadband.com
www.thinkbroadband.com - formerly known as ADSLguide.org.uk
The author of the above post is a thinkbroadband staff member. It may not constitute an official statement on behalf of thinkbroadband.
Standard User FarmerGilesUK
(learned) Sat 02-Apr-11 17:46:01
Print Post

Re: Is this normal ?


[re: MrSaffron] [link to this post]
 
Its quite random. Hasn't done it for a few nights.

Regards


Register (or login) on our website and you will not see this ad.

Standard User ukhardy07
(member) Sat 02-Apr-11 18:54:27
Print Post

Re: Is this normal ?


[re: FarmerGilesUK] [link to this post]
 
As long as it's stable and doesn't drop connection / slow the broadband speed down it's fine.

If it causes the line to drop, it's a different story.
  Print Thread

Jump to