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Irish Shark
Play Like A Champion Today
Las Vegas, NV
reply to kpet12

Re: Packet loss, disconnect, etc.

• Yes the MTU should be 1500.

• Other devices are going to use/share the bandwidth either connected directly to the router or to the Wireless side of the router.

• On that subject, you said that you have a 20mb service with Comcast. Correct?

• Looking at you speed tests when directly connected to the MODEM, it just hit me. Those speeds are trash for a 20mb line. You have other issues that are impacting your setup. You should be getting ~ 20mb or better.

• Are there any splitters from the drop to the MODEM? How many and what are the rated at?

• Make sure all your coax is in good shape and all connections are tight.

• The MODEM is a DOCSIS 3 MODEM and Comcast may be using bonding on the download and upload channels. Go to this MODEM page » The first page should show your signals for each channel. C&P that page here.

Flip to the log page and see is you have critical errors.
"You can observe a lot by watching". Yogi Berra


Pleasanton, CA
- It makes sense that other devices that are sharing the bandwidth but I haven't introduced any new devices and I was not experiencing these issues before.

- Correction. Up to 20/mb. That might make a difference.

- No splitters attached from the wall cable to the modem.

- Coax cables look good, and everything is tight. From what I can tell anyways.

Modem Stats

RF Parameters

DCID Freq Power SNR Modulation Octets Correcteds Uncorrectables
Downstream 1 2 711.00 MHz -3.28 dBmV 36.84 dB 256QAM 655885763 0 0
Downstream 2 3 717.00 MHz -3.03 dBmV 37.09 dB 256QAM 584716962 0 0
Downstream 3 5 729.00 MHz -3.82 dBmV 37.09 dB 256QAM 490874617 0 0
Downstream 4 8 747.00 MHz -4.17 dBmV 37.09 dB 256QAM 614809865 0 0


UCID Freq Power Channel Type Symbol Rate Modulation
Upstream 1 11 30.60 MHz 46.00 dBmV DOCSIS2.0 (ATDMA) 5120 kSym/s 64QAM
Upstream 3 10 35.40 MHz 45.50 dBmV DOCSIS1.x (TDMA) 2560 kSym/s 16QAM
Upstream 4 12 23.70 MHz 45.25 dBmV DOCSIS2.0 (ATDMA) 5120 kSym/s 64QAM

System Uptime: 9 d: 0 h: 37 m
Computers Detected: staticCPE(1), dynamicCPE(1)
CM Status: Telephony-Reg Complete
Time and Date: Fri 2012-08-31 12:44:19

Interface Parameters
Interface Name Provisioned State Speed (Mbps) MAC address
LAN Enabled Up 100(Full) 00:1D:D0:AA:E8:ED
CABLE Enabled Up ----- 00:1D:D0:AA:E8:EE
MTA Pass Up ----- 00:1D:D0:AA:E8:EF

- I didn't see any critical errors in the event log.

Irish Shark
Play Like A Champion Today
Las Vegas, NV
Shot that one down.

I need to break away for today. I'll have some time tomorrow as I will be up early for the ND Game.

It doesn't make any sense why you are getting speeds like those.

We are just going to have to eliminate one thing at a time.

In the router what speed is it set to? b/g/n what is the Macbook set to? Router = n; Macbook = ? (the fastest that it can go).

Do you have another adapter to use to connect wireless to the router?

Have you updated your router's firmware? The WNR2000v3 initial Release Firmware Version is what you want to have.
"You can observe a lot by watching". Yogi Berra

Mr. Wireless

what do u use to measure packet loss? do u run an MTR?

Irish Shark
Play Like A Champion Today
Las Vegas, NV

1 edit
reply to Irish Shark
Just thinking about some more stuff that we can look at/try. Not in any order, just off the top of my head.

• If a port’s light is lit, a link has been established to the connected device. If a LAN port is connected to a 100 Mbps device, verify that the port’s light is green. If the port is 10 Mbps, the light will be amber. What color is the MacBook port?

• If the light is NOT GREEN ... What is the speed that the Macbook Airport set to set to? b/g/n ?

• Reboot the Router.

• What does Network Utility show as your wireless speed?

• If Bluetooth is on, turn it off.

• Use WPA2 as your encryption mode (All Devices).

• Try changing the channel that your wireless is on (Try Channel 11 as a starting point in the router and the MacBook; then 2, then 6.) You can use this »www.istumbler.net/ to check your wireless single's strength. Use the channel that has the highest single. You can also see nearby networks that might be interfering with you.

• How far away are you from the router? Walls & stuff? Bring the Macbook close to the router. Any improvement?

• Try resetting your the PRAM and NVRAM »support.apple.com/kb/ht1379

• Try resetting the System Management Controller (SMC)
"You can observe a lot by watching". Yogi Berra


Pleasanton, CA
I'll take a look into these and report back later this afternoon. Once again, I appreciate all of your help.

And congrats on the Notre Dame win!