 hobgoblinSortof AgoblinPremium
join:2001-11-25
Orchard Park, NY
kudos:8 | reply to bluepoint
Re: [TWC] Deciphering tracert Sigh.
Lets look at the last hop
With the router Night:
21 20 ms 22 ms 22 ms lga15s28-in-f3.1e100.net [74.125.226.195]
11 * 14 ms 15 ms 170.149.168.130
With the router Morning:
16 19 ms 21 ms 22 ms lga15s28-in-f5.1e100.net [74.125.226.197]
11 15 ms 15 ms 15 ms 170.149.168.130
Without the router:
10 18 ms 14 ms 15 ms 170.149.168.130
14 20 ms 21 ms 19 ms lga15s34-in-f5.1e100.net [173.194.43.5]
As any technically minded person will tell you the only hop that we care about is the last one. No one is interested in the first one other than you.
As I said previously the packet loss with the router is a concern.
Hob
--
"A foolish consistency is the hobgoblin of little minds."
- Ralph Waldo Emerson
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| said by hobgoblin:Sigh.
As any technically minded person will tell you the only hop that we care about is the last one. Wrong, a technically knowledgeable person will look at every hop, any congestion at each route will affect the latency. And that's why traceroute helps technical people to find router problems if any. |
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hobgoblinSortof AgoblinPremium
join:2001-11-25
Orchard Park, NY
kudos:8 | "Wrong, a technically knowledgeable person will look at every hop, any congestion at each route will affect the latency. "
Ok I am done with this conversation. This discussion has been done to death multiple times over the years. You must have missed them.
Hob
--
"A foolish consistency is the hobgoblin of little minds."
- Ralph Waldo Emerson
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| Multiple times dead, wow that's your best technical answer.  I agree, I must end this conversation. Don't forget though you need to help the OP. |
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hobgoblinSortof AgoblinPremium
join:2001-11-25
Orchard Park, NY
kudos:8 | "Multiple times dead, wow that's your best technicl answer."
A technical person can always spell technical correctly. I would suggest the OP visits »Time Warner Cable TV/Voice and posts relevant information in that forum.
Good edit!
Hob
--
"A foolish consistency is the hobgoblin of little minds."
- Ralph Waldo Emerson
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| said by hobgoblin:"A technical person can always spell technical correctly. Hob
Nope you're too late.  |
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 BeachieStranded in paradise
join:2001-07-12
St. Pete, FL
kudos:2 | It's not too late to fix [sic] loosing |
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 antdudeA Ninja AntPremium,VIP
join:2001-03-25
United State
kudos:4 | reply to golden eagle
Ping cpe-74-xx-xx-x.nyc.res.rr.com [74.xx.xx.x] for a few minutes. It seems like this one is losing packets. |
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Reviews:
 ·Windstream
 ·VOIPo
| reply to bluepoint
said by bluepoint:said by hobgoblin:Sigh.
As any technically minded person will tell you the only hop that we care about is the last one. Wrong, a technically knowledgeable person will look at every hop, any congestion at each route will affect the latency. And that's why traceroute helps technical people to find router problems if any. In this case there is no evidence of really anything wrong in any of the trace routes except for that fist one with all of the *'s in it.
The "First" hop with high latency just mean the device is putting ICMP directed at it and only at it on the back burner while it deals with other traffic, hence why the rest of the hops have a normal latency, if the high latency continued then yes there really is a delay there.
What ever the problem is its not showing in the traceroute.
--
ASUS M4A79T Deluxe | AMD Phenom II x3 720 BE AM3 w/4 Cores @ 3.41Ghz(OC) | 4Gb DDR3 Memory @ 1600mhz | Sapphire ATI HD4870 1GB 800mhz/1000mhz(OC) | 2x500GB HDD's Raid 0 | Windows 7 Ultimate x64 Build 7600 (RTM) | Windstream DSL 12m (14.9m Sync)/766k |
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| reply to bluepoint
said by bluepoint:Wrong, a technically knowledgeable person will look at every hop, any congestion at each route will affect the latency. And that's why traceroute helps technical people to find router problems if any.
A traceroute directs UDP or ICMP at EACH HOP separately, and gets an ICMP response from EACH HOP separately. Each measurement of latency is for the time which that individual hop responded to the UDP or ICMP from the traceroute.
If I am getting low latency from the last hop, then that is all that matters.
Latency at any particular hop that doesn't continue is latency to the CPU of that particular router hop. Modern day service provider routers have the management plane separated from the forwarding plane. A router responds to traceroutes from its management plane. If that management plane is busy, it will delay the ICMP response to the traceroute. All of the other traceroute packets pass through the router's forwarding plane, which is controlled by ASICs or other dedicated CPUs within the linecards of the router and are designed to forward packets quickly.
Maybe now you'll understand why high latency from a specific hop does not affect the entire round trip if the same latency is not being added to each hop thereafter.
Latency caused by congestion would show up at every hop in the traceroute, because the forwarding plane (the linecards) have the actual ports that would be congested. Adding the congestion latency to each traceroute packet that is being sent to each subsequent packet after the congested port.
This traceroute shows no signs of congestion latency. |
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 golden eagleAquila chrysaetosPremium
join:2002-08-06
On a cliff | Whoosh. Okay that being said what could be causing my consistent connection issues? TWC seems to be of little help. As it turns out that "24 hour device watch" is a 14 day watch and short of sending someone out to check my line when I experience the issue - which TW doesn't send techs out at that hour - I may be sol. They told me last night that my "modem is offline" but I was connected to the net. Certain pages did load it just took forever. I mean I understand that as demand grows during the day my speeds will be lower but starting last week and coming to a climax the last two nights nights I've been essentially regulated to an AOL dial-up connection. I couldn't even log in here last night to read thru this thread.
All I know as a novice is that my issue is consistent -every day and there's a pattern to it - in the evenings. I'd like to get more insight so I can understand what the cause is. |
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golden eagleAquila chrysaetosPremium
join:2002-08-06
On a cliff | reply to iansltx
For what it's worth here are the trace routes from last night with & w/out the router.
Tracing route to google.com [74.125.226.238]
over a maximum of 30 hops:
1 9 ms 3 ms 1 ms 192.168.1.1
2 2910 ms * * cpe-74-xx-xx-x.nyc.res.rr.com [74.xx.xx.x]
3 13 ms 12 ms 12 ms cpe-24-168-135-25.nj.res.rr.com [24.168.135.25]
4 55 ms * * bun117.nyquny91-rtr001.nyc.rr.com [184.152.112.101]
5 21 ms * * bun6-nyquny91-rtr002.nyc.rr.com [24.29.148.254]
6 19 ms 15 ms 15 ms 107.14.19.22
7 * 27 ms 23 ms ae-0-0.cr0.nyc30.tbone.rr.com [66.109.6.26]
8 22 ms * 22 ms ae-4-0.cr0.dca20.tbone.rr.com [66.109.6.28]
9 18 ms 18 ms * ae-1-0.pr0.dca10.tbone.rr.com [66.109.6.165]
10 * * * Request timed out.
11 38 ms * 22 ms 209.85.252.46
12 22 ms * * 72.14.236.148
13 41 ms 21 ms 21 ms 209.85.249.10
14 22 ms 21 ms * 209.85.251.89
15 22 ms * * 72.14.239.252
16 20 ms * * lga15s29-in-f14.1e100.net [74.125.226.238]
17 22 ms 22 ms * lga15s29-in-f14.1e100.net [74.125.226.238]
18 21 ms * 42 ms lga15s29-in-f14.1e100.net [74.125.226.238]
Trace complete.
Tracing route to nytimes.com [170.149.168.130]
over a maximum of 30 hops:
1 4 ms 1 ms 1 ms 192.168.1.1
2 * * * Request timed out.
3 * 14 ms 31 ms cpe-24-168-135-25.nj.res.rr.com [24.168.135.25]
4 * 13 ms * bun117.nyquny91-rtr001.nyc.rr.com [184.152.112.101]
5 * * * Request timed out.
6 15 ms 55 ms * ae-3-0.cr0.nyc20.tbone.rr.com [66.109.6.76]
7 * 14 ms 15 ms 107.14.17.169
8 * 14 ms 15 ms xe-11-0-2.edge2.Newark1.Level3.net [4.30.135.153]
9 * * 13 ms ae-21-52.car1.Newark1.Level3.net [4.69.156.37]
10 29 ms 14 ms * NEW-YORK-TI.car1.Newark1.Level3.net [4.30.129.234]
11 16 ms 15 ms 15 ms 170.149.168.130
Trace complete.
xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx xxxxx
Tracing route to google.com [173.194.43.37]
over a maximum of 30 hops:
1 * * * Request timed out.
2 * * 11 ms cpe-24-168-135-25.nj.res.rr.com [24.168.135.25]
3 * 37 ms * bun117.nyquny91-rtr001.nyc.rr.com [184.152.112.101]
4 34 ms * 18 ms bun6-nyquny91-rtr002.nyc.rr.com [24.29.148.254]
5 19 ms * * 107.14.19.22
6 * * 25 ms 107.14.17.172
7 19 ms * 23 ms 66.109.9.30
8 * * 17 ms 107.14.19.135
9 * 61 ms 60 ms 74.125.49.181
10 17 ms * * 209.85.252.80
11 965 ms * 20 ms 72.14.236.146
12 37 ms 19 ms * 209.85.249.10
13 * * * Request timed out.
14 * 18 ms 18 ms 72.14.237.254
15 19 ms 19 ms * lga15s35-in-f5.1e100.net [173.194.43.37]
16 20 ms 18 ms * lga15s35-in-f5.1e100.net [173.194.43.37]
17 * * * Request timed out.
18 * * * Request timed out.
19 18 ms 19 ms 18 ms lga15s35-in-f5.1e100.net [173.194.43.37]
Trace complete.
C:\Users\User>tracert nytimes.com
Tracing route to nytimes.com [170.149.168.130]
over a maximum of 30 hops:
1 * 3786 ms 2716 ms cpe-74-xx-xx-x.nyc.res.rr.com [74.xx.xx.x]
2 * * 32 ms cpe-24-168-135-25.nj.res.rr.com [24.168.135.25]
3 15 ms 31 ms 15 ms bun117.nyquny91-rtr001.nyc.rr.com [184.152.112.101]
4 * * * Request timed out.
5 * 17 ms 15 ms 107.14.19.22
6 13 ms * * 107.14.17.169
7 14 ms 12 ms * xe-4-3-0.edge2.Newark1.Level3.net [4.59.20.161]
8 * 12 ms 12 ms ae-11-51.car1.Newark1.Level3.net [4.69.156.5]
9 * * 16 ms NEW-YORK-TI.car1.Newark1.Level3.net [4.30.129.234]
10 * 99 ms * 170.149.168.130
11 14 ms 15 ms 15 ms 170.149.168.130
Trace complete.
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| Now those do show issues.
What are you modem signal levels like when you have problems? |
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 kilrathi
join:2005-04-22
Rockaway Park, NY
 ·Time Warner Cable
| reply to golden eagle
do some packet loss testing when this occurs because I am pretty much confident you have some packet loss, anytime I have upstream packet loss or used to have(nowdays things are improving) if I did any trace all the rr network hops would show a lot of * in places when normally they dont show. I pretty much know that first hop is nothing to worry about and then there is one rr hop where it disregards ping requests but all other will respond if I have no packet loss. |
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golden eagleAquila chrysaetosPremium
join:2002-08-06
On a cliff
2 edits | reply to Napsterbater
said by Napsterbater:...
What are you modem signal levels like when you have problems?
I'm assuming you're asking about the indicator lights ... Normal, Cable activity & PC link blinking/Internet & Cable link solid. Unless of course it's in the middle of some random disconnect/reboot sequence but during those events I have no connection.
said by kilrathi:do some packet loss testing ...
Wish I could but I barely have a good enough connection to perform trace routes via the command prompt. I will give it a whirl tonight tho. |
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iansltx
join:2007-02-19
Golden, CO
kudos:2 | Go to 192.168.100.1 in your web browser. There should be signal levels shown there for your modem. Report those back. |
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golden eagleAquila chrysaetosPremium
join:2002-08-06
On a cliff | At this moment:
Main ---------------------------------------
PC Connectivity:
USB: Unattached
Ethernet: 100 BaseT
USB VendID: 069B
MAC Address: xx:xx:xx:xx:xx:xx
Cable Signal: Ready
Tuning: Complete
Ranging: Complete
Data Service: Ready
Connecting: Complete
Configuring: Complete
Registering: Complete
Current State: Operational
Highest State Obtained: Operational
Configuration Parameters:
Computers Allowed by Service Provider: 1
Computers Detected by Modem: 1
Diagnostics ------------------------------------
Status Code: Operational
Software Version: ST52.08.34
Software Model: a806
Bootloader: 2.1.6d
Cable Signal Details
Forward Path:
Signal Acquired at 315.000 MHz
SNR: 37.9 dB
Received Signal Strength: -7.6 dBmV
Bit Error Rate: 0.000 %
Modulation: 256 QAM
Return Path:
Connection: Acquired
Frequency: 23.8 MHz
Power Level: 48.9 dBmV
Channel ID: 22
Modulation: 16 QAM
Data Service Details
Provisioned Address: Yes
Provisioned Time: Yes
Provisioned Configuration: Yes
Registered: Yes
BPI: Enabled
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| Those look ok at the moment, check back on them when your having the problems. |
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golden eagleAquila chrysaetosPremium
join:2002-08-06
On a cliff | reply to golden eagle
Oops. |
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golden eagleAquila chrysaetosPremium
join:2002-08-06
On a cliff | reply to Napsterbater
Roger wilco |
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