US Cable Support → Time Warner Cable > Cary,NC: packet loss, high latency

Cary,NC: packet loss, high latency

Hello,

Has anyone else in this area been experiencing internet issues? For the last week this has been an intermittent issue at different times and now the hotline has a pre-recorded message that there is an issue in the area. Troubleshooting more than a week seems a bit long.

I'm on a business line at Regency Park and haven't noticed any issues.

I am seeing the problem you are seeing in Cary in the Northwest Raleigh. All destinations are experiencing high latency and I am seeing periods of packet loss.

Tracing route to www.dslreports.com [64.91.255.98]
over a maximum of 30 hops:

1 1 ms 1 ms 4 ms 10.0.0.1
2 1 ms 1 ms 1 ms xxx.xxx.xxx.xxx
3 41 ms 27 ms 29 ms cpe-107-015-240-001.nc.res.rr.com [107.15.240.1]

4 122 ms 117 ms 115 ms 66.26.45.221
5 125 ms 127 ms 122 ms ae19.rlghncpop-rtr1.southeast.rr.com [24.93.64.0
]
6 120 ms 121 ms 120 ms 107.14.19.42
7 128 ms 124 ms 125 ms ae-2-0.pr0.dca10.tbone.rr.com [66.109.6.169]
8 120 ms 122 ms 122 ms 64.213.78.149
9 149 ms 147 ms 148 ms GIGLINX.TenGigabitEthernet3-1.ar5.CHI2.gblx.net
[208.49.135.162]
10 174 ms 161 ms 158 ms lw-dc2-core3-te9-1.rtr.liquidweb.com [209.59.157
.224]
11 154 ms 153 ms 150 ms lw-core6.rtr.liquidweb.com [209.59.157.109]
12 157 ms 155 ms 157 ms lw-dc3-dist15.rtr.liquidweb.com [69.167.128.205]

13 156 ms 153 ms 153 ms www.dslreports.com [64.91.255.98]

Trace complete.

I too am seeing an increase in latency and PL tonight, looks like hop 3 is the offending router:

Target Name: google-public-dns-a.google.com
IP: 8.8.8.8
Date/Time: 10/2/2013 9:34:11 PM to 10/2/2013 9:39:35 PM

Hop Sent Err PL% Min Max Avg Host Name / [IP]
2 29 0 0.0 14 76 33 rrcs-24-172-248-1.midsouth.biz.rr.com [24.172.248.1]
3 29 1 3.4 122 149 130 [66.26.45.173] =================
4 29 0 0.0 124 152 131 ae19.rlghncpop-rtr1.southeast.rr.com [24.93.64.0]
5 29 0 0.0 123 167 137 [107.14.19.20]
6 29 1 3.4 121 186 140 ae-2-0.pr0.dca10.tbone.rr.com [66.109.6.169]
7 9 0 0.0 195 273 216 [74.125.49.181]
8 29 2 6.9 130 175 139 [209.85.252.80]
9 29 0 0.0 140 182 155 [72.14.236.146]
10 29 1 3.4 147 177 156 [66.249.95.231]
11 29 0 0.0 129 156 137 [72.14.234.67]
12 26 26 100.0 0 0 0 [-]
13 29 1 3.4 128 153 138 google-public-dns-a.google.com [8.8.8.8]

Having the same issue in Morrisville:

Tracing route to www.dslreports.com [64.91.255.98]
over a maximum of 30 hops:

2 93 ms 92 ms 108 ms xe10-1-0.1162.rlghnca-rtr1.nc.rr.com [24.162.250
.41]
3 93 ms 91 ms 90 ms ae19.rlghncpop-rtr1.southeast.rr.com [24.93.64.0
]
4 * 100 ms 119 ms 107.14.19.42
5 100 ms 98 ms 96 ms ae-2-0.pr0.dca10.tbone.rr.com [66.109.6.169]
6 343 ms 108 ms 204 ms 64.213.78.149
7 166 ms 166 ms 170 ms GIGLINX.TenGigabitEthernet3-1.ar5.CHI2.gblx.net
[208.49.135.162]
8 177 ms 175 ms 175 ms lw-dc2-core3-te9-1.rtr.liquidweb.com [209.59.157
.224]
9 176 ms 176 ms 175 ms lw-dc3-core5-ge1-13.rtr.liquidweb.com [209.59.15
7.105]
10 177 ms 193 ms 182 ms lw-dc3-dist15.rtr.liquidweb.com [69.167.128.201]

11 189 ms 187 ms 195 ms www.dslreports.com [64.91.255.98]

Trace complete.

I had the same issue here in West Cary a few nights ago. Latency increased significantly, and bandwidth dropped below a megabit. Internet was mostly un-usable for several hours. Have not noticed any issues since.

About a month ago TWC sent me a notice that they were re-claiming some analog channels (ch. 22/23 and some others) for digital use on or around the October 8th time frame. I'm guessing that these channels are being reclaimed for digital channels and DOCSIS 3. Maybe this is whats causing the recent slowdowns across the local area? I'm still on a DOCSIS 2 modem, so I have no idea if any channels have been recently bonded, but I did reset my modem the night I was having the speed and latency issues and noticed my modem sync'd back up to a different upstream channel than usual.

Does anyone in this area have a DOCSIS 3 modem that shows how many channels are currently being bonded on the downstream/upstream? The notice also does mention their intention to deliver "more robust internet speeds."

I actually switched from a docsis2 to 3 in hope this would help with the intermittent slowdowns but as far as I can tell the issue must be behind the port in the access hub.
I am currently seeing 4 bonded upstream channels. My most recent issues were 10/3 at 5:03pm and 10/4 at 12:07pm

How bad are these slowdowns, and how long do they last?

Outside of that one evening, I have't noticed anything. Around this time of evening I sometimes will see some congestion on my DOCSIS 2 modem, but I won't notice it unless I'm downloading a file or run a speed test, and then, usually I'm still getting around 10 Mbps. I can sorta live with that for now but I am paying for 20 Mbps, which I always see except for late evening.

There's a lot of nearby construction going on in the area I live in. 2 weeks ago crews damaged a line outside our neighborhood and our service partially went out. Internet was flaky, and most digital channels were broken up and distorted. TWC found the damaged cable the next day and replaced it. Have also had issues in the past where there was a problem upstream causing horrible slowdowns that often usually require several neighbors on the same node to call up and complain, then they usually investigate and fix it. Ask your neighbors if they are having similar issues.