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hobgoblin
Sortof Agoblin
Premium
join:2001-11-25
Orchard Park, NY
kudos:10

1 recommendation

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



bluepoint

join:2001-03-24

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.


hobgoblin
Sortof Agoblin
Premium
join:2001-11-25
Orchard Park, NY
kudos:10

"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



bluepoint

join:2001-03-24

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.



hobgoblin
Sortof Agoblin
Premium
join:2001-11-25
Orchard Park, NY
kudos:10

"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



bluepoint

join:2001-03-24

said by hobgoblin:

"A technical person can always spell technical correctly. Hob

Nope you're too late.


Beachie
Stranded in paradise

join:2001-07-12
St. Pete, FL
kudos:2

It's not too late to fix [sic] loosing



antdude
A Ninja Ant
Premium,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.



Napsterbater
Meh
Premium,MVM
join:2002-12-28
Milledgeville, GA
Reviews:
·Windstream
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


skuv

@rr.com
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.


golden eagle
Aquila chrysaetos
Premium
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.



golden eagle
Aquila chrysaetos
Premium
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.
 


Napsterbater
Meh
Premium,MVM
join:2002-12-28
Milledgeville, GA

Now those do show issues.

What are you modem signal levels like when you have problems?



kilrathi
Premium
join:2005-04-22
Rockaway Park, NY
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.



golden eagle
Aquila chrysaetos
Premium
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.

iansltx

join:2007-02-19
Austin, TX
kudos:2

1 recommendation

Go to 192.168.100.1 in your web browser. There should be signal levels shown there for your modem. Report those back.



golden eagle
Aquila chrysaetos
Premium
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
 


Napsterbater
Meh
Premium,MVM
join:2002-12-28
Milledgeville, GA

2 recommendations

Those look ok at the moment, check back on them when your having the problems.



golden eagle
Aquila chrysaetos
Premium
join:2002-08-06
On a cliff
reply to golden eagle

Oops.



golden eagle
Aquila chrysaetos
Premium
join:2002-08-06
On a cliff
reply to Napsterbater

Roger wilco



golden eagle
Aquila chrysaetos
Premium
join:2002-08-06
On a cliff

Here's where I stand:

While on the phone with level 3 yesterday, shortly after my last post incidentally, I completely lost my connection. Level 3 told me that at 11:43 am a "service disruption had been identified" in my area and "technicians were working on it". Because of this he was unable to schedule an appt for me to have someone come out and check my line.

So I'm stuck with a random connection for the time being. Unless of course my issue is related to the service disruption. While I'm hopeful I have my reservations. If my issue is related to the disruption how on earth did it take two days for enough customers to notice and log a complaint w/TW? :/