Mystified at Zero FEC errors
- Subscribe to RSS Feed
- Mark Topic as New
- Mark Topic as Read
- Float this Topic for Current User
- Bookmark
- Subscribe
- Printer Friendly Page
- Plusnet Community
- :
- Forum
- :
- Help with my Plusnet services
- :
- Broadband
- :
- Mystified at Zero FEC errors
Mystified at Zero FEC errors
20-12-2010 8:00 PM
- Mark as New
- Bookmark
- Subscribe
- Subscribe to RSS Feed
- Highlight
- Report to Moderator
Morning
Uptime: 2 days, 19:52:05
FEC Errors (Up/Down): 0 / 0
CRC Errors (Up/Down): 0 / 11,914
HEC Errors (Up/Down): 0 / 7,360
Evening
Uptime: 3 days, 6:12:08
DSL Type: G.992.5 annex A
Bandwidth (Up/Down) [kbps/kbps]: 443 / 7,776
Data Transferred (Sent/Received) [kB/kB]: 0.00 / 1.00
Output Power (Up/Down) [dBm]: 12.5 / 0.0
Line Attenuation (Up/Down) [dB]: 25.0 / 46.0
SN Margin (Up/Down) [dB]: 16.5 / 4.0
Vendor ID (Local/Remote): TMMB / IFTN
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): 44 / 0
FEC Errors (Up/Down): 0 / 0
CRC Errors (Up/Down): 0 / 14,261
HEC Errors (Up/Down): 0 / 8,842
You will see that whilst downstream CRC and HEC errors are amassing, FEC errors are absent.
I am told this is a sign that Interleaving is off, but in Member Centre > Connection Settings> Broadband Interleaving it is shown as on.
I am thinking if a router reboot might be worthwhile, but wondering if either there is a fault with the router or a glitch has happened at PN's end, so that I am working unwanted Fastpath,or the router's info is wrong.
Please advise
Re: Mystified at Zero FEC errors
20-12-2010 8:09 PM
- Mark as New
- Bookmark
- Subscribe
- Subscribe to RSS Feed
- Highlight
- Report to Moderator
Quote I am told this is a sign that Interleaving is off, but in Member Centre > Connection Settings> Broadband Interleaving it is shown as off.
Re: Mystified at Zero FEC errors
20-12-2010 8:22 PM
- Mark as New
- Bookmark
- Subscribe
- Subscribe to RSS Feed
- Highlight
- Report to Moderator
All the same, the maximum sync speed with interleaving turned on is 7616kbps, so a figure above this does indeed suggest that interleaving is turned off (BTW you put "off" twice in your post).
FEC errors are the ones corrected by the forward-error-correction scheme that is turned on/off at the same time as interleaving, so a zero count is a direct indication that the FEC process has been turned off and, by implication, that interleaving is turned off too.
Your CRC errors suggest you are getting around 180 errors per hour, or just under 0.1%
Using FTTC since 2011. Currently on 80/20 Unlimited Fibre Extra.
Re: Mystified at Zero FEC errors
20-12-2010 8:26 PM
- Mark as New
- Bookmark
- Subscribe
- Subscribe to RSS Feed
- Highlight
- Report to Moderator
Re: Mystified at Zero FEC errors
20-12-2010 8:51 PM
- Mark as New
- Bookmark
- Subscribe
- Subscribe to RSS Feed
- Highlight
- Report to Moderator
Using FTTC since 2011. Currently on 80/20 Unlimited Fibre Extra.
Re: Mystified at Zero FEC errors
20-12-2010 9:00 PM
- Mark as New
- Bookmark
- Subscribe
- Subscribe to RSS Feed
- Highlight
- Report to Moderator
Text now corrected
Quote from: Oldjim Please clarify
Quote I am told this is a sign that Interleaving is off, but in Member Centre > Connection Settings> Broadband Interleaving it is shown as off.
Re: Mystified at Zero FEC errors
20-12-2010 9:03 PM
- Mark as New
- Bookmark
- Subscribe
- Subscribe to RSS Feed
- Highlight
- Report to Moderator
Re: Mystified at Zero FEC errors
20-12-2010 9:20 PM
- Mark as New
- Bookmark
- Subscribe
- Subscribe to RSS Feed
- Highlight
- Report to Moderator
Interleaving
Interleaving is a form of error correction that helps to improve the stability of high-speed broadband. You currently have interleaving switched on.
While improving stability, interleaving can increase ping times. This can cause problems for online gamers. For this reason, we offer the ability to turn interleaving off.
BTW it's only in the last few days that FEC errors have been absent.
Warning! Turning interleaving off may reduce the stability of your broadband connection. We recommend leaving it turned on. If you turn interleaving off, there is no option to turn it back on again.
Control interleaving
Your interleaving status: ON
Re: Mystified at Zero FEC errors
21-12-2010 1:01 AM
- Mark as New
- Bookmark
- Subscribe
- Subscribe to RSS Feed
- Highlight
- Report to Moderator
Re: Mystified at Zero FEC errors
21-12-2010 1:31 AM
- Mark as New
- Bookmark
- Subscribe
- Subscribe to RSS Feed
- Highlight
- Report to Moderator
puddy
Re: Mystified at Zero FEC errors
21-12-2010 9:35 AM
- Mark as New
- Bookmark
- Subscribe
- Subscribe to RSS Feed
- Highlight
- Report to Moderator
I've just been checking the status of your line on the BT systems and interleaving is currently Auto which means it can be changed. The interleaving is currently in the off or fast state as of the 17th December.
Jojo
Re: Mystified at Zero FEC errors
21-12-2010 2:22 PM
- Mark as New
- Bookmark
- Subscribe
- Subscribe to RSS Feed
- Highlight
- Report to Moderator
So that solves the mystery: my line is on auto, and, pace spraxyt, "interleaving status in On, but the Depth is 1 - which means it is actually Off ". Just as long as eventually it won't muck things up, I'll leave as it is.
All that concerned me was that nothing untoward was happening at either end.
@others
I do have a very good connection. For some unknown reason it has climbed in the last couple of months , so at a road distance of 2.7km (via cabinet's known location) it is as now. Cannot fathom why, unless preparation for FTTC due 09/11 has side effects.
Thanks all for your time
Re: Mystified at Zero FEC errors
22-12-2010 9:38 AM
- Mark as New
- Bookmark
- Subscribe
- Subscribe to RSS Feed
- Highlight
- Report to Moderator
Re: Mystified at Zero FEC errors
22-12-2010 10:46 AM
- Mark as New
- Bookmark
- Subscribe
- Subscribe to RSS Feed
- Highlight
- Report to Moderator
Quote from: lucerne @others
I do have a very good connection. For some unknown reason it has climbed in the last couple of months , so at a road distance of 2.7km (via cabinet's known location) it is as now. Cannot fathom why, unless preparation for FTTC due 09/11 has side effects.
Each joint in the cable adds some additional attenuation especially if it is (or goes) bad. A rising attenuation might be a sign that BT added some joints in your cable as part of installation of their fibre paths, but I didn't think they disturbed existing circuits when doing that. And I wouldn't have thought it would be that noticeable either.
Another reason might be that you have a line that is starting to get iffy - but then you'd see that in the noise figures too.
Using FTTC since 2011. Currently on 80/20 Unlimited Fibre Extra.
Re: Mystified at Zero FEC errors
22-12-2010 3:50 PM
- Mark as New
- Bookmark
- Subscribe
- Subscribe to RSS Feed
- Highlight
- Report to Moderator
I think you may have the wrong end of the stick. I no way am I concerned about the line with its rising connection speed. Were you thinking that SNR was a problem or the attenuation? SNR is not high and attenuation only rose when connection went adsl2+, which is normal.
My OP was an enquiry not a complaint, something probably rare on the forum these days: it's east to read in complaint mode.
- Subscribe to RSS Feed
- Mark Topic as New
- Mark Topic as Read
- Float this Topic for Current User
- Bookmark
- Subscribe
- Printer Friendly Page
- Plusnet Community
- :
- Forum
- :
- Help with my Plusnet services
- :
- Broadband
- :
- Mystified at Zero FEC errors