dslreports logo
site
 
    All Forums Hot Topics Gallery
spc

spacer




how-to block ads


Search Topic:
uniqs
861
share rss forum feed

Gravy_Dave

join:2006-02-21
Sacramento, CA

[Signals] High Ping

Have the performance tier. Never had any problems with connection, very stable. Lately when I do a speed test thru Comcast, it's coming up with a very high ping. Usually it's around 15-20 ms. »stage.results.speedtest.comcast.···0332.png

Here is what the modem is showing me:

Status
Status HW/FW Versions Event Log CM State Advanced
RF Parameters
Downstream
DCID Freq Power SNR Modulation Octets Correcteds Uncorrectables
Downstream 1 32 555.00 MHz -10.08 dBmV 34.48 dB 256QAM 867215309 0 0
Downstream 2 29 537.00 MHz -9.67 dBmV 34.21 dB 256QAM 576790189 0 0
Downstream 3 30 543.00 MHz -10.75 dBmV 33.72 dB 256QAM 540915619 0 0
Downstream 4 31 549.00 MHz -10.59 dBmV 34.08 dB 256QAM 569599312 0 0
Reset FEC Counters
Upstream
UCID Freq Power Channel Type Symbol Rate Modulation
Upstream 1 1 30.60 MHz 40.00 dBmV DOCSIS2.0 (ATDMA) 5120 kSym/s 64QAM
Upstream 3 2 23.70 MHz 40.00 dBmV DOCSIS2.0 (ATDMA) 5120 kSym/s 64QAM
Upstream 4 3 35.40 MHz 40.00 dBmV DOCSIS1.x (TDMA) 2560 kSym/s 16QAM

Status
System Uptime: 3 d: 12 h: 29 m
Computers Detected: staticCPE(0), dynamicCPE(1)
CM Status: OPERATIONAL
Time and Date: Tue 2012-08-28 05:46:49

Interface Parameters

Any help is appreciated and thanks in advance.


gar187er
I do this for a living

join:2006-06-24
Dover, DE
kudos:4
could be a lot of issues, is it 24/7 that high?

also your downstream levels/snr is fairly low
--
I'm better than you!

Gravy_Dave

join:2006-02-21
Sacramento, CA
reply to Gravy_Dave
The last couple of days it's been like that.


EG
The wings of love
Premium
join:2006-11-18
Union, NJ
kudos:10
reply to Gravy_Dave
Just adding two cents here. Are you actually experiencing any connectivity or speed issues ?

I wouldn't put too much trust in those response time figures that you see at speed testing sites such as those. They are subject to many variables. Try using your operating system's built in ping tool to ping some remote servers like google.com and your WAN (comcast) default gateway IP address and see what you get.

Gravy_Dave

join:2006-02-21
Sacramento, CA
reply to Gravy_Dave
That's just it, connectivity is just fine. 24 down and 3.50 up with powerboost.
I pinged google and it's just fine but I pinged Comcast and it's

C:\Documents and Settings\Dave.DAVE-0CA6439C8C> ping comcast.net

Pinging comcast.net [76.96.39.102] with 32 bytes of data:

Request timed out.
Request timed out.
Request timed out.
Request timed out.

Ping statistics for 76.96.39.102:
Packets: Sent = 4, Received = 0, Lost = 4 (100% loss),


EG
The wings of love
Premium
join:2006-11-18
Union, NJ
kudos:10
Looks like that particular Comcast server / site is deliberately configured to not respond to ICMP based ping packets. This is not an indication of anything wrong.

Gravy_Dave

join:2006-02-21
Sacramento, CA
reply to Gravy_Dave
I've pinged it multiple times and never had a problem.


NetFixer
Bah Humbug
Premium
join:2004-06-24
The Boro
Reviews:
·Cingular Wireless
·Comcast Business..
·Vonage
said by Gravy_Dave:

I've pinged it multiple times and never had a problem.

Are you sure that you always explicitly pinged "comcast.net"?


C:\>ping comcast.net
 
Pinging comcast.net [76.96.39.102] with 32 bytes of data:
 
Request timed out.
Request timed out.
Request timed out.
Request timed out.
 
Ping statistics for 76.96.39.102:
    Packets: Sent = 4, Received = 0, Lost = 4 (100% loss),
 
C:\>ping www.comcast.net
 
Pinging a1526.dscg.akamai.net [23.67.61.57] with 32 bytes of data:
 
Reply from 23.67.61.57: bytes=32 time=20ms TTL=58
Reply from 23.67.61.57: bytes=32 time=18ms TTL=58
Reply from 23.67.61.57: bytes=32 time=20ms TTL=58
Reply from 23.67.61.57: bytes=32 time=20ms TTL=58
 
Ping statistics for 23.67.61.57:
    Packets: Sent = 4, Received = 4, Lost = 0 (0% loss),
Approximate round trip times in milli-seconds:
    Minimum = 18ms, Maximum = 20ms, Average = 19ms
 
C:\>ping xfinity.comcast.net
 
Pinging a1075.dscg.akamai.net [23.67.61.73] with 32 bytes of data:
 
Reply from 23.67.61.73: bytes=32 time=20ms TTL=58
Reply from 23.67.61.73: bytes=32 time=18ms TTL=58
Reply from 23.67.61.73: bytes=32 time=18ms TTL=58
Reply from 23.67.61.73: bytes=32 time=19ms TTL=58
 
Ping statistics for 23.67.61.73:
    Packets: Sent = 4, Received = 4, Lost = 0 (0% loss),
Approximate round trip times in milli-seconds:
    Minimum = 18ms, Maximum = 20ms, Average = 18ms
 
C:\>ping speedtest.comcast.net
 
Pinging speedtest.g.comcast.net [69.252.23.68] with 32 bytes of data:
 
Reply from 69.252.23.68: bytes=32 time=43ms TTL=56
Reply from 69.252.23.68: bytes=32 time=43ms TTL=56
Reply from 69.252.23.68: bytes=32 time=43ms TTL=56
Reply from 69.252.23.68: bytes=32 time=43ms TTL=56
 
Ping statistics for 69.252.23.68:
    Packets: Sent = 4, Received = 4, Lost = 0 (0% loss),
Approximate round trip times in milli-seconds:
    Minimum = 43ms, Maximum = 43ms, Average = 43ms
 
 


--
We can never have enough of nature.
We need to witness our own limits transgressed, and some life pasturing freely where we never wander.


EG
The wings of love
Premium
join:2006-11-18
Union, NJ
kudos:10

4 edits
reply to Gravy_Dave
Things change... With today's CDN's you are probably being re-directed to different servers, some of which do not respond to ping. You are reading too much in to this !!! If you are not having issues then there is nothing wrong. The only thing that may be an issue is as gar187er See Profile has stated, the downstream power is weak and the SNR is low, and if it fluctuates even farther out of spec then you can begin to have connectivity issues.

Also, pinging Comcast is basically meaningless unless you are spending your life at their portal. As some newbies may think, that is not where everything on the internet comes from.

Gravy_Dave

join:2006-02-21
Sacramento, CA
reply to Gravy_Dave
NetFixer, yes always to comcast.net.

The only reason I'm concerned is I play COD4 and my ping too the server in Los Angeles is little higher than usual. I'm usually at 30-35 ping and lately it's been up to 50's and 60's, which I know is still good.


EG
The wings of love
Premium
join:2006-11-18
Union, NJ
kudos:10

1 edit
reply to Gravy_Dave
said by Gravy_Dave:

That's just it, connectivity is just fine.

Hmmm... This is what you stated earlier. If you want to try to improve the stats, can you remove any excess splitters that may be in the line leading directly to the modem ?


tshirt
Premium
join:2004-07-11
Snohomish, WA
kudos:5
Reviews:
·Comcast
Try pinging pretty much anything else right now.
both comcast.net and www.comcast.net seem to be in DOS defense mode and after 3-8 pings jump to the 100's of ms or fail to respond at all.
Normal usage seems to be fine, of course different areas maybe at different response times.