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Think Broadband Ping Monitor Results (POST YOURS)
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Old 29-09-2013, 21:39   #4036
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Re: Think Broadband Ping Monitor Results (POST YOURS)

Do the same again, except this time use "pathping" instead of traceroute. But to be honest, those results look fine.
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Old 29-09-2013, 21:42   #4037
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Re: Think Broadband Ping Monitor Results (POST YOURS)

He didn't choose a problematic URL - which is what you requested.
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Old 29-09-2013, 21:54   #4038
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Re: Think Broadband Ping Monitor Results (POST YOURS)

Indeed, this is probably exactly why qasdfdsaq didn't go into much further detail. I'm not convinced that an elevated ping of 10ms to a single site is an issue worth getting into. Unless you can demonstrate that a site has significantly higher ping than it should, it'll be a nightmare to pin down the real cause of it.

In any case, the fact that there's no issue up to the BBC shows that the local connection is fine, so even if we could find a site with a higher ping, it's almost certainly something out of his control (And Good luck explaining this to first line).
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Old 29-09-2013, 22:03   #4039
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Re: Think Broadband Ping Monitor Results (POST YOURS)

mtr is a nice tool to check latency and packetloss with and there is a winmtr version if you are using windows.http://winmtr.net/
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Old 29-09-2013, 22:44   #4040
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Re: Think Broadband Ping Monitor Results (POST YOURS)

Quote:
Originally Posted by Kushan View Post
Do the same again, except this time use "pathping" instead of traceroute. But to be honest, those results look fine.
I have a mac, don't have path ping? I found MTR?

This is for Youtube

Quote:
Traceroute

traceroute: Warning: youtube.com has multiple addresses; using 64.15.115.55
traceroute to youtube.com (64.15.115.55), 64 hops max, 72 byte packets
1 * * *
2 * * *
3 basl-core-2a-ae8-605.network.virginmedia.net (81.96.1.45) 16.957 ms 12.336 ms 10.873 ms
4 brnt-bb-1a-ae10-0.network.virginmedia.net (81.96.0.145) 11.645 ms 12.671 ms 12.494 ms
5 brhm-bb-1b-et-700-0.network.virginmedia.net (62.253.175.38) 23.760 ms 17.306 ms 21.996 ms
6 manc-bb-1c-et-000-0.network.virginmedia.net (62.253.175.70) 31.880 ms 19.016 ms 57.265 ms
7 * manc-bb-1d-ae2-0.network.virginmedia.net (62.253.174.93) 20.863 ms *
8 tcma-ic-2-ae0-0.network.virginmedia.net (62.253.174.178) 74.581 ms 18.165 ms 18.885 ms
9 186-14-250-212.static.virginmedia.com (212.250.14.186) 19.790 ms 20.473 ms 18.110 ms
10 cache.google.com (64.15.115.55) 18.402 ms 19.559 ms 24.021 ms

Quote:
HOST: MacBook-Pro.local Loss% Snt Last Avg Best Wrst StDev
1.|-- ??? 100.0 10 0.0 0.0 0.0 0.0 0.0
2.|-- ??? 100.0 10 0.0 0.0 0.0 0.0 0.0
3.|-- basl-core-2b-ae8-708.netw 0.0% 10 10.0 19.5 8.9 42.0 10.9
4.|-- popl-bb-1b-ae11-0.network 0.0% 10 11.6 13.4 10.0 23.1 3.9
5.|-- manc-bb-1a-as3-0.network. 0.0% 10 19.4 21.0 17.3 30.2 3.8
6.|-- manc-bb-1d-ae0-0.network. 0.0% 10 32.7 26.4 20.4 32.7 3.8
7.|-- tcma-ic-2-ae0-0.network.v 10.0% 10 25.9 23.9 17.7 34.8 5.5
8.|-- 182-14-250-212.static.vir 0.0% 10 23.5 21.7 17.7 26.1 3.0
9.|-- cache.google.com 0.0% 10 21.2 22.2 17.7 26.9 3.6
Also cableforum

Quote:
HOST: MacBook-Pro.local Loss% Snt Last Avg Best Wrst StDev
1.|-- routerlogin.net 30.0% 10 2.8 1.8 1.2 2.8 0.7
2.|-- ??? 100.0 10 0.0 0.0 0.0 0.0 0.0
3.|-- basl-core-2b-ae8-707.netw 0.0% 10 10.0 11.9 9.4 18.4 2.9
4.|-- popl-bb-1b-ae11-0.network 0.0% 10 15.6 19.7 10.4 44.7 10.8
5.|-- popl-bb-1c-ae1-0.network. 0.0% 10 14.2 12.8 10.8 15.3 1.6
6.|-- nrth-bb-1c-ae7-0.network. 0.0% 10 14.3 15.4 13.0 19.8 2.4
7.|-- nrth-tmr-1-ae1-0.network. 0.0% 10 14.2 15.8 12.9 21.3 2.7
8.|-- fran-ic-1-as0-0.network.v 0.0% 10 29.5 31.3 29.2 33.6 1.6
9.|-- decix.bb-d.fra3.fra.de.on 0.0% 10 34.2 34.4 31.7 39.1 2.3
10.|-- ae-4.bb-d.fra3.fra.de.one 0.0% 10 30.2 32.6 30.2 35.8 1.9
11.|-- te-3-3.bb-d.bs.kae.de.one 0.0% 10 35.6 45.9 34.0 82.6 19.0
12.|-- ae-1.gw-distp-a.kw.nbz.fr 0.0% 10 34.8 38.4 34.1 48.1 4.0
13.|-- ae-1.gw-prtr-a0308-a.kw.n 0.0% 10 34.8 38.4 33.2 54.7 6.5
14.|-- titan.cableforum.co.uk 0.0% 10 37.5 36.7 34.2 38.5 1.4
Quote:
Originally Posted by Sephiroth View Post
He didn't choose a problematic URL - which is what you requested.
Found one now.
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Old 30-09-2013, 02:23   #4041
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Re: Think Broadband Ping Monitor Results (POST YOURS)

Aside from some congestion effects they all look perfectly normal.

---------- Post added at 01:23 ---------- Previous post was at 01:22 ----------

Quote:
Originally Posted by Risco View Post
Found one now.
And that would be what?
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Old 03-10-2013, 22:42   #4042
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Re: Think Broadband Ping Monitor Results (POST YOURS)



Mmmmmm, and I was out all day
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Old 04-10-2013, 00:17   #4043
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Re: Think Broadband Ping Monitor Results (POST YOURS)

Can Anyone help me out with some advice on this one please?

120M/12M service
SH2 in modem mode
8 Downstream channels
1 Upstream channel

Before my summer hols - like this nearly every day - consistent 100M+ down and 8M+ up




After my summer hols (SH2 was switched off for a couple of week - big mistake I think) - now with a new IP address - very inconsistent performance, down and up fluctuating all over the shop. significant jitter



and tonight



Power levels look to be in line with acceptable ranges

Downstream (manually rebooted two days ago)
Power Level (dBmV) 3.16 4.15 3.88 3.40 3.77 3.95 3.62 3.44
RxMER (dB) 37.09 37.09 36.84 37.09 37.36 37.94 37.36 37.09
Pre RS Errors 12802 12339 7816 6376 4175 4171 4563 4198
Post RS Errors 1127 1142 1027 1201 878 866 1236 782

Upstream Power 45.50 no timeouts

A couple of WinMTR results which seem to indicate a big problem with the first hop outside.


WinMTR dell.com
|-----------------------------------------------------------------------------------------------|

| WinMTR statistics |

| Host - % | Sent | Recv | Best | Avrg | Wrst | Last |

|-----------------------------------------------------|------|------|------|------|------|------|

| 192.168.*.* - 0 | 1658 | 1658 | 0 | 1 | 4 | 1 |

|cpc9-heme***************.virginmedia.com - 1 | 1654 | 1653 | 8 | 25 | 1472 | 15 |

|lutn-core-2b-ae5-2547.network.virginmedia.net - 1 | 1650 | 1648 | 9 | 18 | 165 | 12 |

|nrth-bb-1c-ae12-0.network.virginmedia.net - 0 | 1657 | 1657 | 9 | 19 | 188 | 19 |

| 62.253.174.189 - 0 | 1658 | 1658 | 19 | 29 | 214 | 26 |

| xe-2-0-1.cr1.ams5.nl.above.net - 0 | 1658 | 1658 | 19 | 28 | 207 | 20 |

| xe-0-1-0.mpr1fra3.de.above.net - 0 | 1658 | 1658 | 25 | 35 | 204 | 28 |

| xe-0-0-0.mpr1.fra4.de.above.net - 1 | 1654 | 1653 | 24 | 37 | 294 | 33 |

| xe-7-1-1.mpr1.cdg11.fr.above.net - 0 | 1658 | 1658 | 29 | 39 | 245 | 38 |

| xe-0-0-0.mpr2.cdg12.fr.above.net - 0 | 1658 | 1658 | 28 | 39 | 208 | 34 |

| ge-7-1-0.mpr1.lhr2.uk.above.net - 0 | 1658 | 1658 | 28 | 36 | 207 | 33 |

| so-5-3-0.mpr1.lhr3.uk.above.net - 1 | 1654 | 1653 | 28 | 37 | 197 | 39 |

| xe-7-0-0.mpr2.lhr3.uk.above.net - 0 | 1658 | 1658 | 29 | 38 | 219 | 34 |

| 64.125.24.121.available.above.net - 1 | 1654 | 1653 | 28 | 38 | 191 | 32 |

| xe-8-3-0.cr1.lga5.us.above.net - 1 | 1654 | 1653 | 0 | 117 | 265 | 111 |

| xe-1-0-0.cr2.lga5.us.above.net - 1 | 1650 | 1648 | 107 | 118 | 289 | 117 |

| xe-0-2-1.er2.lga5.us.above.net - 1 | 1654 | 1653 | 102 | 112 | 255 | 126 |

| 192.205.36.105 - 0 | 1658 | 1658 | 103 | 112 | 281 | 116 |

| cr2.n54ny.ip.att.net - 0 | 1658 | 1658 | 141 | 150 | 330 | 148 |

| cr2.wswdc.ip.att.net - 1 | 1654 | 1653 | 142 | 151 | 326 | 150 |

| cr1.attga.ip.att.net - 0 | 1658 | 1658 | 142 | 152 | 334 | 149 |

| cr2.dlstx.ip.att.net - 1 | 1654 | 1653 | 143 | 152 | 306 | 151 |

| cr81.auttx.ip.att.net - 0 | 1658 | 1658 | 141 | 150 | 326 | 147 |

| ggr1.dlstx.ip.att.net - 0 | 1658 | 1658 | 140 | 157 | 340 | 149 |

| 12.249.215.6 - 0 | 1658 | 1658 | 141 | 149 | 324 | 145 |

| No response from host - 100 | 332 | 0 | 0 | 0 | 0 | 0 |

| No response from host - 100 | 332 | 0 | 0 | 0 | 0 | 0 |

| No response from host - 100 | 332 | 0 | 0 | 0 | 0 | 0 |

| No response from host - 100 | 332 | 0 | 0 | 0 | 0 | 0 |

| No response from host - 100 | 332 | 0 | 0 | 0 | 0 | 0 |

|_________________________________________________ ____|______|______|______|______|______|______|

WinMTR v0.92 GPL V2 by Appnor MSP - Fully Managed Hosting & Cloud Provider


WinMTR bbc.co.uk

|-----------------------------------------------------------------------------------------------|

| WinMTR statistics |

| Host - % | Sent | Recv | Best | Avrg | Wrst | Last |

|-----------------------------------------------------|------|------|------|------|------|------|

| 192.168.*.* - 0 | 553 | 553 | 0 | 1 | 8 | 1 |

|cpc9-heme*******************.virginmedia.com - 0 | 552 | 552 | 9 | 31 | 1565 | 12 |

|lutn-core-2a-ae5-2547.network.virginmedia.net - 0 | 553 | 553 | 8 | 14 | 84 | 13 |

|popl-bb-1c-ae2-0.network.virginmedia.net - 0 | 553 | 553 | 9 | 16 | 112 | 12 |

|nrth-bb-1c-ae7-0.network.virginmedia.net - 0 | 553 | 553 | 11 | 17 | 51 | 15 |

|nrth-bb-1b-ae11-0.network.virginmedia.net - 4 | 486 | 469 | 11 | 24 | 125 | 13 |

| tele-ic-4-ae0-0.network.virginmedia.net - 1 | 549 | 548 | 13 | 22 | 122 | 16 |

| pos6-1.rt0.thdo.bbc.co.uk - 0 | 553 | 553 | 12 | 19 | 78 | 15 |

| No response from host - 100 | 110 | 0 | 0 | 0 | 0 | 0 |

| ae0.er01.cwwtf.bbc.co.uk - 0 | 553 | 553 | 14 | 21 | 77 | 20 |

| 132.185.255.156 - 0 | 553 | 553 | 16 | 21 | 48 | 17 |

| www-vip.cwwtf.bbc.co.uk - 0 | 553 | 553 | 14 | 20 | 56 | 19 |

|_________________________________________________ ____|______|______|______|______|______|______|

WinMTR v0.92 GPL V2 by Appnor MSP - Fully Managed Hosting & Cloud Provider
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Old 04-10-2013, 00:23   #4044
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Re: Think Broadband Ping Monitor Results (POST YOURS)

I don't see the problem in the WinMTR. Could you be more specific please? I didn't understand the bit I highlighted: "A couple of WinMTR results which seem to indicate a big problem with the first hop outside."

In your stats, you have post-RS errors. Are these growing?
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Old 04-10-2013, 01:00   #4045
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Re: Think Broadband Ping Monitor Results (POST YOURS)

Quote:
Originally Posted by Sephiroth View Post
I don't see the problem in the WinMTR. Could you be more specific please? I didn't understand the bit I highlighted: "A couple of WinMTR results which seem to indicate a big problem with the first hop outside."

In your stats, you have post-RS errors. Are these growing?
The WinMTR wrst column has figures of 1472ms and 1565ms and for the bbc set an average of 31ms - these seem unusually high to me, but maybe not?

The Post RS errors have increased from around 300 immediately after the reboot (which is fairly normal) to the current values in three days.
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Old 04-10-2013, 09:07   #4046
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Re: Think Broadband Ping Monitor Results (POST YOURS)

The BBC according to my eyes had an average of 20 ms. The max at the Hemel CMTS means that a packet addressed directly to VM's Hemel server had an RTT of 1472/1565. This means that occasionally, the low priority pings are given degraded priority over other traffic - but note, they are not discarded which is what they would be if the CMTS was congested.

The post-RS errors shouldn't be occurring. True, the rate is lowish but they are lost packets and will affect your experience. When you changed IP addresses, were the past and current address totally different? The usual thing if you switch off for a week or more is that you get a new IP address on the same line card and that your downstream channels are in the same bonding group. Have your downstream channel numbers changed? If the channels are totally different then you've been moved to a different line card and so has everyone else on your cabinet. If all that has changed, there has possibly been a resegmentation and the loading on your segment is different from before.

The Post-RS errors are not congruent with the SNR/RxMER values. I can't see if you have an SH2 or a SH1; the former always shows lower SNR values than the SH1. But either way, the reported SNR is more than adequate to support no noise, which is the usual cause for packet loss on the downstream. Also, the SH1 is known not to count post-RS errors correctly.

So, if the post-RS count is correct, that suggests the packets either arrive corrupted at the SH or are corrupted en-route which needs to be investigated by VM.

It might pay to see what your neighbours are experiencing.
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Old 04-10-2013, 14:38   #4047
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Re: Think Broadband Ping Monitor Results (POST YOURS)

Quote:
Originally Posted by Sephiroth View Post
The BBC according to my eyes had an average of 20 ms. The max at the Hemel CMTS means that a packet addressed directly to VM's Hemel server had an RTT of 1472/1565. This means that occasionally, the low priority pings are given degraded priority over other traffic - but note, they are not discarded which is what they would be if the CMTS was congested.

The post-RS errors shouldn't be occurring. True, the rate is lowish but they are lost packets and will affect your experience. When you changed IP addresses, were the past and current address totally different? The usual thing if you switch off for a week or more is that you get a new IP address on the same line card and that your downstream channels are in the same bonding group. Have your downstream channel numbers changed? If the channels are totally different then you've been moved to a different line card and so has everyone else on your cabinet. If all that has changed, there has possibly been a resegmentation and the loading on your segment is different from before.

The Post-RS errors are not congruent with the SNR/RxMER values. I can't see if you have an SH2 or a SH1; the former always shows lower SNR values than the SH1. But either way, the reported SNR is more than adequate to support no noise, which is the usual cause for packet loss on the downstream. Also, the SH1 is known not to count post-RS errors correctly.

So, if the post-RS count is correct, that suggests the packets either arrive corrupted at the SH or are corrupted en-route which needs to be investigated by VM.

It might pay to see what your neighbours are experiencing.
It is an SH2, which rebooted (for unknown reason) very early this morning. IP address is completely different before/after summer hol , but will need to rummage through files to see if I have the previous channels recorded anywhere. Re-segmentation is a possibility - though you'd hope that would improve things, not make them worse. Time to face the fun of calling VM I suppose. Thanks for your assistance.
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Old 04-10-2013, 15:51   #4048
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Re: Think Broadband Ping Monitor Results (POST YOURS)

It won't be better if they've swung you and a load of others onto a temporary CMTS (currently HEME9) while they beef up the one you were on. I notice you only habe one upstream channel - should be two when they've finished their upgrades.
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Old 04-10-2013, 16:03   #4049
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Re: Think Broadband Ping Monitor Results (POST YOURS)

What about me?

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Mmmmmm, and I was out all day
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Old 04-10-2013, 16:22   #4050
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Re: Think Broadband Ping Monitor Results (POST YOURS)

Ha ha Craigie! An updated TBB would be instructive.
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