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[Bags]

Hi

I am a gamer and i had all the interleaving problems and after reading all the advise on this forum i emailed BT and had it turned off, its been brilliant for a few months but now i seem to be having ping issues again. My question is on the BT home hub how do you know if interleaving is on or off?

Heres my connection

 DSL Connection 

Link Information
   
 
Uptime: 0 days, 11:43:30
 
Modulation: G.992.1 annex A
 
Bandwidth (Up/Down) [kbps/kbps]: 448 / 3,008
 
Data Transferred (Sent/Received) [MB/MB]: 31.13 / 112.75
 
Output Power (Up/Down) [dBm]: 12.0 / 17.0
 
Line Attenuation (Up/Down) [dB]: 27.0 / 49.0
 
SN Margin (Up/Down) [dB]: 19.0 / 6.0
 
Vendor ID (Local/Remote): TMMB / TSTC
 
Loss of Framing (Local/Remote): 0 / 0
 
Loss of Signal (Local/Remote): 9 / 0
 
Loss of Power (Local/Remote): 0 / 0
 
Loss of Link (Remote): 0
 
Error Seconds (Local/Remote): 472,060 / 0
 
FEC Errors (Up/Down): 0 / 0
 
CRC Errors (Up/Down): 0 / 18,466
 
HEC Errors (Up/Down): 0 / 4,992
 
 
 
Thanks Bags

[kitz]

Hi and welcome.

Most routers will tell you if you are interleaved and they will normally say somewhere whether it is FAST or INTERLEAVED. 

If you dont see anything obvious, then possibly the easiest way of checking is by doing a tracert to the bbc and seeing your latency hops.

If youre interleaved then your first main hop will probably be in the region of 30ms.
A non-interleaved line will be less

eg

Code: [Select]

C:\Documents and Settings\kitz>tracert bbc.co.uk

Tracing route to bbc.co.uk [212.58.224.131]
over a maximum of 30 hops:

  1     1 ms     1 ms     1 ms  192.168.7.100
  2    17 ms    16 ms    17 ms  lo0-plusnet.pte-ag1.plus.net [195.166.128.64]
  3    17 ms    17 ms    17 ms  ge0-0-0-403.pte-gw2.plus.net [84.92.4.2]
  4    18 ms    18 ms    15 ms  ge0-0-0-22.ptn-gw1.plus.net [212.159.4.1]
  5    18 ms    18 ms    16 ms  gi1-1-22.ptn-gw5.plus.net [212.159.4.6]
  6    18 ms    18 ms    17 ms  rt0.thdo.bbc.co.uk [212.58.239.25]
  7    18 ms    19 ms    16 ms  212.58.238.133
  8    18 ms    17 ms    16 ms  rdirwww-vip.thdo.bbc.co.uk [212.58.224.131]

Trace complete.
...  and finally... looking at your line stats, theres a lot of crc/hec errors, but no FEC errors.  Lots of FEC errors is normally indicative of an interleaved line.

[Bags]

Hi

i tried a tracert

Tracing route to bbc.co.uk [212.58.224.131]
over a maximum of 30 hops:

  1    47 ms    99 ms    99 ms  api.home [192.168.1.254]
  2    27 ms    27 ms    26 ms  esr6.manchester5.broadband.bt.net [217.47.67.145
]
  3    28 ms    27 ms    31 ms  217.47.67.13
  4    28 ms    28 ms    28 ms  212.140.206.1
  5    28 ms    30 ms    28 ms  217.41.173.66
  6    32 ms    41 ms    33 ms  217.41.173.118
  7    50 ms    28 ms    27 ms  217.41.173.46
  8    28 ms    28 ms    27 ms  217.47.251.49
  9    28 ms    32 ms    28 ms  londonc-access2-s7.ukcore.bt.net [194.72.2.241]

 10    33 ms    32 ms    32 ms  core1-pos4-1.ealing.ukcore.bt.net [62.6.204.201]

 11    32 ms    32 ms    33 ms  core1-pos1-0-0.telehouse.ukcore.bt.net [62.6.201
.82]
 12    34 ms    38 ms    32 ms  194.74.65.6
 13    33 ms    32 ms    33 ms  212.58.238.153
 14    32 ms    32 ms    32 ms  rdirwww-vip.thdo.bbc.co.uk [212.58.224.131]

Trace complete.

that 1st hop to the hub doesn't look right any thoughts

Thanks

Bags

[roseway]

That first hop does look strange. I get around 0.5 ms for my first hop, and I am interleaved. I've no idea what your result means though, I'm afraid.

Eric

[tickmike]

I results look about the same as mine and I'm on interleaved path 9.
I use the DMT tool and it tells you on there =           http://dmt.mhilfe.de/

Michael

[kitz]

>> manchester5.broadband

Same RAS/section and that I was on and I can trace to the RAS in about 15ms so it looks like Interleaving could be applied.

You could try the dmt tool as suggested by mike. 
Since the HH is loosely based on the ST716 then you'd need version 7.x of dmt.  But there are reports of it not working if you have the latest HH firmware. :/

High first hop could be a few things, but since its not following through to other hops it means your router is giving trafic priotity over responding to PINGs and Im not too concerned right now.  Are you using wireless, is there other traffic on the internal LAN, have you made the router unpingable which may be affecting outgoing response.  Do you Have QoS turned on in the router.

[soms]

Lo all, just thought I would point out that when I tracert I am also getting a relatively slow hop to the hub.
Must be a common thing rather than perhaps just a certain scenario.
One little, probably incorrect thought - on my machine I have the DNS client service disabled since I think that having a local DNS cache can be a pain. Perhaps this first hop is slower due to DNS resolution? Probably wrong, but worth a mention. I am no expert on DNS, internet routing whatever etc.

Tracing route to www.bbc.net.uk [212.58.226.232]
over a maximum of 30 hops:

  1    41 ms    99 ms    99 ms  BThomehub.home [192.168.1.1]
  2    45 ms    42 ms    42 ms  217.47.130.58
  3    40 ms    41 ms    41 ms  217.47.130.161
  4    44 ms    41 ms    42 ms  217.41.175.29
  5    42 ms    43 ms    41 ms  217.41.175.65
  6    42 ms    41 ms    42 ms  217.41.175.130
  7    41 ms    42 ms    41 ms  217.41.175.42
  8    75 ms    59 ms    41 ms  217.41.191.113
  9    42 ms    41 ms    41 ms  194.72.31.81
 10    74 ms    49 ms    43 ms  core1-pos11-3.ealing.ukcore.bt.net [62.6.204.29]

 11    44 ms    43 ms    43 ms  core1-pos1-0-0.telehouse.ukcore.bt.net [62.6.201
.82]
 12    42 ms    45 ms    42 ms  194.74.65.6
 13    44 ms    43 ms    43 ms  212.58.238.153
 14    43 ms    43 ms    41 ms  212.58.238.157
 15    43 ms    43 ms    43 ms  212.58.226.232

Trace complete.

[mr_chris]

Must be a 'feature' of the BT Home Hub - nice for diagnostics eh?

Are either of you connected wirelessly or wired to the hub?

As regards DNS lookup, I see your train of thought, but that's nothing to do with it - the DNS lookup happens separately from the timing of the ping response. Tracert sends 3 ping requests, times the responses, THEN looks up the name of the IP address it received a response from.

[kitz]

>> Must be a 'feature' of the BT Home Hub - nice for diagnostics eh?


Didn't one of the ST routers do that at one point too?   Was something to do with the firmware :/

[kitz]

>> Must be a 'feature' of the BT Home Hub - nice for diagnostics eh?


Didn't one of the ST routers do that at one point too?   Was something to do with the firmware :/

Yeah apparently its a quirk to do with all ST v5 firware (which the HH is based on), and it gives a false high 1st hop.
Doesnt affect throughput though and it should be ok if you ping the router direct.