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Standard User spacecowboy83
(newbie) Tue 07-Jun-11 15:59:41
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Stats


[link to this post]
 
Hi im new here and my broadband is with BT. I was wondering what are CRC Events, HEC Events and Error Seconds (Local/Remote): as the numbers seem to get higher the longer my router is conncected and is this normal

ADSL Line Status
Connection Information
Line state: Connected
Connection time: 0 days, 00:36:41
Downstream: 5.281 Mbps
Upstream: 448 Kbps


ADSL Settings
VPI/VCI: 0/38
Type: PPPoA
Modulation: G.992.1 Annex A
Latency type: Fast
Noise margin (Down/Up): 6.0 dB / 24.0 dB
Line attenuation (Down/Up): 49.8 dB / 31.5 dB
Output power (Down/Up): 19.3 dBm / 12.5 dBm
FEC Events (Down/Up): 0 / 0
CRC Events (Down/Up): 230 / 8
Loss of Framing (Local/Remote): 0 / 0
Loss of Signal (Local/Remote): 0 / 0
Loss of Power (Local/Remote): 0 / 0
HEC Events (Down/Up): 165 / 0
Error Seconds (Local/Remote): 440 / 30
Standard User orly
(fountain of knowledge) Tue 07-Jun-11 16:40:09
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Re: Stats


[re: spacecowboy83] [link to this post]
 
Generally as a line gets longer (yours is reasonably lengthy at nearly 50dB attenuation) you'll see more of these errors on the line.

CRC is "cyclic redundancy check". The first lines of the wikipedia article explains it pretty well.

Similarly, HEC events and Errored seconds

From the errored seconds we can see you experience some sort of error approximately 7% of the time you're connected. Note that an error doesn't necessarily occur for an entire second so in reality the rate is far lower.

You'll likely find the errors will appear at a slow rate when the line is idle and will increase more rapidly if you're downloading at the full 5mbit you receive.

In short I wouldn't really worry. It's normal and you're numbers aren't too high. If you were seeing many thousands of errors over a relatively short period of time it might indicate some sort of issue. When I first got ADSL many moons ago I remember seeing comedy numbers like 28,000 CRC errors and the like - the connection was still pretty good!

---
BT Infinity 8th July 2010
(NIBA)
600m (approx) to cabinet
25.5mbit down / 7.6mbit up

Click here to see Comparison of FTTC ISPs
Which FTTC ISP do you use?

Edited by orly (Tue 07-Jun-11 16:42:27)

Standard User john2007
(legend) Tue 07-Jun-11 17:17:39
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Re: Stats


[re: orly] [link to this post]
 
Odd stats. I don't understand how the error seconds can be larger than the number of errors.

Downloading or idle the incidence of errors should not change. The ADSL line is always communicating at the same rate home to exchange and CRC/HEC/FEC errors will always be generated/detected.


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Administrator MrSaffron
(staff) Tue 07-Jun-11 17:19:09
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Re: Stats


[re: john2007] [link to this post]
 
If the single error crosses boundary of two seconds...

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 john2007
(legend) Tue 07-Jun-11 17:33:42
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Re: Stats


[re: MrSaffron] [link to this post]
 
In reply to a post by MrSaffron:
If the single error crosses boundary of two seconds...

Er, yes, but, no, but, yes, but no.

Can't see that written in any of the ADSL specifications. smile
Standard User marc2510
(newbie) Tue 07-Jun-11 18:28:15
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Re: Stats


[re: spacecowboy83] [link to this post]
 
In reply to a post by spacecowboy83:
Hi im new here and my broadband is with BT. I was wondering what are CRC Events, HEC Events and Error Seconds (Local/Remote): as the numbers seem to get higher the longer my router is conncected and is this normal

ADSL Line Status
Connection Information
Line state: Connected
Connection time: 0 days, 00:36:41
Downstream: 5.281 Mbps
Upstream: 448 Kbps


ADSL Settings
VPI/VCI: 0/38
Type: PPPoA
Modulation: G.992.1 Annex A
Latency type: Fast
Noise margin (Down/Up): 6.0 dB / 24.0 dB
Line attenuation (Down/Up): 49.8 dB / 31.5 dB
Output power (Down/Up): 19.3 dBm / 12.5 dBm
FEC Events (Down/Up): 0 / 0
CRC Events (Down/Up): 230 / 8
Loss of Framing (Local/Remote): 0 / 0
Loss of Signal (Local/Remote): 0 / 0
Loss of Power (Local/Remote): 0 / 0
HEC Events (Down/Up): 165 / 0
Error Seconds (Local/Remote): 440 / 30


Sorry to Hijack your post but we are in the same boat and rather than making a new post.

Here is my ADSL List Stats is there anythink in my stats i should be worried about?
I play alot of online games and i seem to get a very high ping/tracert results.
( compared to my old house that is on the same round lol ) - Both with BT

ADSL line status
Connection information
Line state Connected
Connection time 0 days, 22:27:22
Downstream 5,024 Kbps
Upstream 448 Kbps


ADSL settings
VPI/VCI 0/38
Type PPPoA
Modulation ITU-T G.992.1
Latency type Interleaved
Noise margin (Down/Up) 5.8 dB / 22.0 dB
Line attenuation (Down/Up) 48.0 dB / 28.0 dB
Output power (Down/Up) 19.3 dBm / 11.9 dBm
Loss of Framing (Local) 0
Loss of Signal (Local) 0
Loss of Power (Local) 0
FEC Errors (Down/Up) 8670911 / 31
CRC Errors (Down/Up) 321 / 2147480000
HEC Errors (Down/Up) nil / 17
Error Seconds (Local) 263

Cheers
Standard User XRaySpeX
(knowledge is power) Tue 07-Jun-11 18:59:30
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Re: Stats


[re: spacecowboy83] [link to this post]
 
What router have you? These is a way of analysing errors with the right router.

Those Error Secs are high. That's 1 every 5 secs frown

1999: Freeserve 48K Dial-Up => 2005: Wanadoo 1 Meg BB => 2007: Orange 2 Meg BB => 2008: Orange 8 Meg LLU BB => 2010: Orange 19 Meg Tweaked / 16 Meg Untweaked LLU BB

Edited by XRaySpeX (Tue 07-Jun-11 19:03:15)

Standard User marc2510
(newbie) Tue 07-Jun-11 19:01:36
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Re: Stats


[re: XRaySpeX] [link to this post]
 
In reply to a post by XRaySpeX:
What router have you? These is a way of analysing errors with the right router.


My router is the BT Home hub 2 frown
Standard User spacecowboy83
(newbie) Tue 07-Jun-11 20:10:41
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Re: Stats


[re: marc2510] [link to this post]
 
Im using home hub 3
here are my stats now

ADSL Line Status
Connection Information
Line state: Connected
Connection time: 0 days, 04:47:29
Downstream: 5.281 Mbps
Upstream: 448 Kbps


ADSL Settings
VPI/VCI: 0/38
Type: PPPoA
Modulation: G.992.1 Annex A
Latency type: Fast
Noise margin (Down/Up): 5.8 dB / 24.0 dB
Line attenuation (Down/Up): 49.8 dB / 31.5 dB
Output power (Down/Up): 19.3 dBm / 12.5 dBm
FEC Events (Down/Up): 0 / 0
CRC Events (Down/Up): 884 / 10
Loss of Framing (Local/Remote): 0 / 0
Loss of Signal (Local/Remote): 0 / 0
Loss of Power (Local/Remote): 0 / 0
HEC Events (Down/Up): 830 / 0
Error Seconds (Local/Remote): 978 / 36
Standard User XRaySpeX
(knowledge is power) Tue 07-Jun-11 20:25:03
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Re: Stats


[re: spacecowboy83] [link to this post]
 
Error Secs still high; 1 every 17 secs frown

1999: Freeserve 48K Dial-Up => 2005: Wanadoo 1 Meg BB => 2007: Orange 2 Meg BB => 2008: Orange 8 Meg LLU BB => 2010: Orange 19 Meg Tweaked / 16 Meg Untweaked LLU BB
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