7mbs on a 25mbps comcast plan, please help

Toggle sidebar Toggle sidebar
E

evechey

Honorable
Nov 21, 2013
8
0
10,510
Alright, so I signed up for new service. I noticed that my service was really slow so I called in to verify that I was indeed on the 25mbps plan. They confirmed that. I then saw that my old surfboard modem was DOCSIS2.0 so I bought a new one: Surfboard SB6121. This is now activated, going into a Linksys Wireless-G router (with tomato firmware). Over wired or wireless I am only see ~7mbps down and ~1.5mbps up. Here is some further details:

From the modem admin page:

Downstream Bonding Channel Value
Channel ID 129 130 131 132
Frequency 579000000 Hz 585000000 Hz 591000000 Hz 597000000 Hz
Signal to Noise Ratio 38 dB 37 dB 38 dB 38 dB
Downstream Modulation QAM256 QAM256 QAM256 QAM256
Power Level 0 dBmV 0 dBmV 1 dBmV 1 dBmV

Here is a ping:

ping yahoo.com
PING yahoo.com (98.139.183.24): 56 data bytes
64 bytes from 98.139.183.24: icmp_seq=0 ttl=51 time=62.426 ms
64 bytes from 98.139.183.24: icmp_seq=1 ttl=51 time=61.872 ms
64 bytes from 98.139.183.24: icmp_seq=2 ttl=49 time=88.588 ms
64 bytes from 98.139.183.24: icmp_seq=3 ttl=51 time=48.635 ms
^C
--- yahoo.com ping statistics ---
4 packets transmitted, 4 packets received, 0.0% packet loss
round-trip min/avg/max/stddev = 48.635/65.380/88.588/14.492 ms

After seeing this information, does this appear to be a Comcast issue? A cable wiring issue (distance/splitting/quality loss)? Or a hardware problem (maybe old firmware and/or hardware)?

Any information would be appreciated.
 
Solution
T
I would call comcast support and ask why your speed does not match the advertised speed. it sounds like comcast is throttling you.
the only other thing i can think is there is just a lot of traffic. does this happen all the time, or just during certian periods?
Sort by date Sort by votes
T

TheinsanegamerN

Distinguished
Jul 19, 2011
363
0
18,810
I would call comcast support and ask why your speed does not match the advertised speed. it sounds like comcast is throttling you.
the only other thing i can think is there is just a lot of traffic. does this happen all the time, or just during certian periods?
 
Upvote 0 Downvote
Solution
E

evechey

Honorable
Nov 21, 2013
8
0
10,510
Could it possibly be due to splitters? I *think* this is running through 2 splitters, but they are the 1000mhz rated ones.

This is all the time, doesn't matter on the time. Right now it is 11am on a Thursday and it's the same.
 
Upvote 0 Downvote
Shaun o

Shaun o

Illustrious
Oct 7, 2007
6,113
1
41,960
Try the modem connected to a computer.
and leave out the router.

That should confirm if it is the problem.

I would still get a test done of the line from your end in case there is a problem from you to the cab located at the end of the street.
Have the line checked for voltages, and DB range to make sure it is in Range.

Also use www.Speedtest.net to confirm the amount of Jitter on the line.

And yes a splitter can be the cause since it half`s or divides power and signal ect.

 
Upvote 0 Downvote
E

evechey

Honorable
Nov 21, 2013
8
0
10,510
Here is the current speed test:

3116223365.png
 
Upvote 0 Downvote
E

evechey

Honorable
Nov 21, 2013
8
0
10,510


I'm not sure how to accomplish this.

 
Upvote 0 Downvote
M

MKBL

Splendid
Nov 17, 2011
429
3
24,565


Is this from wireless or wired? What is the wireless mode on your computer, and the router?

Is the modem/router's firmware updated?

What is the network adapter in your computer? Did you update the driver?

When you connect the wired LAN, is wireless automatically disconnected?


 
Upvote 0 Downvote
E

evechey

Honorable
Nov 21, 2013
8
0
10,510


- This is from a wired connection to my router.
- Firmware information:

Modem:
Model Name: SB6121
Vendor Name: Motorola
Firmware Name: SB_KOMODO-1.0.6.10-SCM00-NOSH
Boot Version: PSPU-Boot(25CLK) 1.0.12.18m3
Hardware Version: 5.0
Serial Number: 359079324634115801012019
Firmware Build Time: Oct 29 2012 18:07:13

Router:
Tomato Firmware v1.23.1607
Copyright (C) 2006-2008 Jonathan Zarate
http://www.polarcloud.com/tomato/
Built on Sun, 14 Dec 2008 02:54:59 -0800

Network adapter:
OSX 10.8.3
Name: ethernet
Type: Ethernet Controller
Bus: PCI
Vendor ID: 0x14e4
Device ID: 0x16b4
Subsystem Vendor ID: 0x14e4
Subsystem ID: 0x16b4
Revision ID: 0x0010
Link Width: x1
BSD name: en0
Kext name: AppleBCM5701Ethernet.kext
Firmware version: 57765-v1.37, 0x7287af41
Location: /System/Library/Extensions/IONetworkingFamily.kext/Contents/PlugIns/AppleBCM5701Ethernet.kext
mDNS offload capable: 3c:07:54:78:67:fb
Version: 3.6.0b1

-I'm not sure if wireless disables automatically, but I turned it off manually to ensure it was the wired connection.

 
Upvote 0 Downvote
E

evechey

Honorable
Nov 21, 2013
8
0
10,510
This is what a comcast tech agent just told me:

"Crisanto: I see that you got an actual download speed of 7.34 Mbps. It is indeed slow for your provisioned Performance speed level which has a maximum achievable download speed rate of 20-25 Mbps."
 
Upvote 0 Downvote
E

evechey

Honorable
Nov 21, 2013
8
0
10,510


Here is a tracert to youtube.com:


Hop Address Min (ms) Max (ms) Avg (ms) +/- (ms)
1 *
2 xe-7-0-0-32767-sur01.grandrapids.mi.michigan.comcast.net (68.85.218.81) 7.50 12.56 9.31
3 xe-9-2-0-0-sur02.grandrapids.mi.michigan.comcast.net (69.139.255.18) 7.70 15.80 10.74 1.43
4 te-0-1-0-9-ar01.pontiac.mi.michigan.comcast.net (68.85.222.49) 20.02 24.38 21.49 10.75
5 he-4-4-0-0-cr01.350ecermak.il.ibone.comcast.net (68.86.90.113) 23.43 29.39 25.64 4.15
6 he-0-10-0-0-pe04.350ecermak.il.ibone.comcast.net (68.86.83.50) 21.82 23.30 22.32 -3.31
7 as15169-4.350ecermak.il.ibone.comcast.net (66.208.233.142) 20.70 34.12 25.64 3.32
8 209.85.255.26 21.28 21.87 21.53 -4.11
9 72.14.237.109 21.42 21.82 21.56 0.04
10 ord08s12-in-f8.1e100.net (74.125.225.8) 21.43 23.07 22.16 0.59
 
Upvote 0 Downvote
E

evechey

Honorable
Nov 21, 2013
8
0
10,510


Here is a ping:

Seq Address RX Bytes TTL RTT (ms) +/- (ms)
0 youtube.com (74.125.225.68) 64 56 22.04
1 youtube.com (74.125.225.68) 64 56 22.52 0.48
2 youtube.com (74.125.225.68) 64 56 23.15 0.63
3 youtube.com (74.125.225.68) 64 56 21.13 -2.02
4 youtube.com (74.125.225.68) 64 56 34.54 13.41
Round-Trip: 21.128 min, 24.674 avg, 34.539 max (ms)
Packets: 5 transmitted, 5 received, 0% lost
 
Upvote 0 Downvote
K

Kewlx25

Distinguished
Oct 23, 2009
2,275
0
20,160
Your tracert to YouTube doesn't look too bad. Looks like about 22ms with +-1ms or so.

What I find interesting is the IP address for YouTube in your tracert is different than your ping. This can happen because of DNS, but the ping looks much worse. About 25ms +-10ms

You pay want to do a "ping -t" to YouTube and let it run all day. It should give you a nice summary. But just a quick glance at what you linked, nothing looks horribly wrong, but is definitely in the "sketch" area.

Another thing to be aware of is that YouTube looks to have a local direct route to your ISP and it may not be very representative of your issues. You may want to try more sites like Blizzard.com or Google.com. You may want to also try some speedtests from other servers.
 
Upvote 0 Downvote
MartinWilson

MartinWilson

Honorable
Aug 13, 2013
154
0
10,760


Did they say they were going to look into the matter? It looks like an ISP issue given what the tech agent said?

 
Upvote 0 Downvote
You must log in or register to reply here.

TRENDING THREADS

Latest posts

Moderators online

Share this page

COMPANY
RESOURCES
FOLLOW
Top Bottom