Discussion:
Looks like Comcast recently optimized Bay Area internet routing
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Thad Floryan
2014-04-29 22:11:18 UTC
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I was wondering why "things" seemed zippier recently, and the ping result
was the first clue "something" improved. The second clue was NOT seeing
"tata" in the traceroute any more -- it used to be at the GreatOaks facility.

My jaw dropped seeing "chicago.il" at hop 6 in the traceroute (see below),
but there's no apparent detrimental effect.

FWIW, I'm in Los Altos near Foothill Expressway and I-280 and my email/web
hosting is with NTT-Verio at their center in Milpitas which, per my gcdist
program, is 11.5 miles away on a great circle route (shortest distance):

REGULUS bash 1/5672> gcdist
GREAT CIRCLE CALCULATOR, GCDIST 1.1 1987 by Thad Floryan

Origin name: .

Destination name: NTT Verio
Latitude of NTT Verio (Deg Min Sec {N or S}): 37 25 58.66 N
Longitude of NTT Verio (Deg Min Sec {E or W}): 121 53 59.7 W

From: 37° 20' 17.2"N, 122° 04' 17.1"W Home
To: 37° 25' 58.7"N, 121° 53' 59.7"W NTT Verio
Bearing = 55° 06.5', Distance = 10.0 nm, 11.5 miles


procyon bash 3089/3091> ping thadlabs.com
PING thadlabs.com (192.220.75.50) 56(84) bytes of data.
64 bytes from thadlabs.com (192.220.75.50): icmp_seq=1 ttl=53 time=14.5 ms
64 bytes from thadlabs.com (192.220.75.50): icmp_seq=2 ttl=53 time=14.3 ms
64 bytes from thadlabs.com (192.220.75.50): icmp_seq=3 ttl=53 time=15.0 ms
64 bytes from thadlabs.com (192.220.75.50): icmp_seq=4 ttl=53 time=14.6 ms
64 bytes from thadlabs.com (192.220.75.50): icmp_seq=5 ttl=53 time=13.9 ms
^C
--- thadlabs.com ping statistics ---
5 packets transmitted, 5 received, 0% packet loss, time 4514ms
rtt min/avg/max/mdev = 13.957/14.504/15.024/0.382 ms

procyon bash 3089/3091> traceroute thadlabs.com
traceroute to thadlabs.com (192.220.75.50), 30 hops max, 60 byte packets
1 router (172.20.20.1) 1.268 ms 1.473 ms 2.971 ms
2 cablegw (24.6.16.1) 12.083 ms 17.341 ms 18.722 ms
3 68.85.216.13 (68.85.216.13) 19.232 ms 18.916 ms 19.035 ms
4 te-1-1-0-12-ar01.oakland.ca.sfba.comcast.net (69.139.199.102) 21.199 ms 22.041 ms 21.699 ms
5 be-90-ar01.sfsutro.ca.sfba.comcast.net (68.85.155.14) 22.092 ms 22.176 ms 22.264 ms
6 te-0-2-0-0-cr01.chicago.il.ibone.comcast.net (68.86.91.121) 23.596 ms 21.662 ms 25.984 ms
7 he-0-10-0-1-pe03.11greatoaks.ca.ibone.comcast.net (68.86.85.234) 23.401 ms 15.078 ms 13.621 ms
8 ae-13.r07.snjsca04.us.bb.gin.ntt.net (129.250.66.33) 17.800 ms 17.784 ms 17.131 ms
9 ae-2.r00.mlpsca01.us.bb.gin.ntt.net (129.250.4.101) 14.869 ms 15.370 ms 21.684 ms
10 ae-0.r00.mlpsca01.us.wh.verio.net (129.250.26.161) 21.403 ms 21.494 ms 21.610 ms
11 ge-25.a0454d.mlpsca01.us.wh.verio.net (128.121.129.26) 21.031 ms 21.643 ms 21.717 ms
12 thadlabs.com (192.220.75.50) 19.480 ms 19.963 ms 20.584 ms
procyon bash 3089/3091>

Thad
Thad Floryan
2014-04-29 23:36:44 UTC
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Post by Thad Floryan
[...]
REGULUS bash 1/5672> gcdist
GREAT CIRCLE CALCULATOR, GCDIST 1.1 1987 by Thad Floryan
Origin name: .
Destination name: NTT Verio
Latitude of NTT Verio (Deg Min Sec {N or S}): 37 25 58.66 N
Longitude of NTT Verio (Deg Min Sec {E or W}): 121 53 59.7 W
From: 37° 20' 17.2"N, 122° 04' 17.1"W Home
To: 37° 25' 58.7"N, 121° 53' 59.7"W NTT Verio
Bearing = 55° 06.5', Distance = 10.0 nm, 11.5 miles
[...]
For the curious, I described the math used in the above program in
the Usenet sci.math group back on 20 October 1988 noting the above
program was the test bed to verify the calculations against examples
in Bowditch's "The American Practical Navigator".

The math description can be seen here:

https://groups.google.com/forum/#!original/sci.math/KAyYuyrovqM/hP0UKTCRyNYJ

Info about the Bowditch book is here:

http://en.wikipedia.org/wiki/Bowditch%27s_American_Practical_Navigator

If you'd like a copy of the Bowditch book, it's free here in a PDF ZIP'd:

2002 bicentennial edition, 35.9 MB ZIP containing a 41MB PDF:

http://msi.nga.mil/MSISiteContent/StaticFiles/NAV_PUBS/APN/pub9.zip

By individual chapters:

http://msi.nga.mil/NGAPortal/MSI.portal?_nfpb=true&_pageLabel=msi_portal_page_62&pubCode=0002

It's *THE* definitive reference for nautical navigation and it also has
a lot of astronomical data.

Note "NGA" = National Geospatial-Intelligence Agency.

Thad
Eli the Bearded
2014-04-30 19:01:17 UTC
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Post by Thad Floryan
http://en.wikipedia.org/wiki/Bowditch%27s_American_Practical_Navigator
http://msi.nga.mil/MSISiteContent/StaticFiles/NAV_PUBS/APN/pub9.zip
...
Post by Thad Floryan
It's *THE* definitive reference for nautical navigation and it also has
a lot of astronomical data.
_Carry On, Mr Bowditch_ by Jean Lee Latham won the Newberry Award in 1956
and is still an excellent book for youth interested in historical and/or
nautical fiction. It traces Nathaniel Bowditch's life from childhood
through self-education to becoming a captain and writing his book. 'Nat'
was very interested in making navigational skills available to everyone,
not just the officers.

Elijah
------
unlike those Brits who wanted to preserve class structure on ships
Thad Floryan
2014-04-30 23:55:51 UTC
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Post by Eli the Bearded
Post by Thad Floryan
http://en.wikipedia.org/wiki/Bowditch%27s_American_Practical_Navigator
http://msi.nga.mil/MSISiteContent/StaticFiles/NAV_PUBS/APN/pub9.zip
...
Post by Thad Floryan
It's *THE* definitive reference for nautical navigation and it also has
a lot of astronomical data.
_Carry On, Mr Bowditch_ by Jean Lee Latham won the Newberry Award in 1956
and is still an excellent book for youth interested in historical and/or
nautical fiction. It traces Nathaniel Bowditch's life from childhood
through self-education to becoming a captain and writing his book. 'Nat'
was very interested in making navigational skills available to everyone,
not just the officers.
Elijah
------
unlike those Brits who wanted to preserve class structure on ships
Hi Eli!

Thank you VERY much for the "Carry on Mr. Bowditch" book reference.

I'm really surprised I haven't heard of it before because astronomy and
navigation were my primary hobbies beginning in the early 1950s and, in
fact, astronomy was my first merit badge in the Boy Scouts. Signalling
was the second merit badge I earned and I was the first kid in the troop
to get that badge in over 40 years -- I'm sure that was contributory to
my career with computers, electronics, telecom, and related.

For the curious, a potpourri of planispheres I've collected since 1954
(60 years ago) can be seen here (think sky charts in paper, plastic and
electronic) -- I need to update that page with additional planispheres
after photographing them:

http://thadlabs.com/Planispheres/

There's another page for the Celestron SkyScout that belongs in the main
Astronomy page on my website (which is still being reworked) that you
might find interesting, too; it identifies sky objects being pointed to
and directs the user to specified objects in the sky:

http://thadlabs.com/SkyScout

Thad
Eli the Bearded
2014-05-01 20:39:20 UTC
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Post by Thad Floryan
Thank you VERY much for the "Carry on Mr. Bowditch" book reference.
You're welcome.
Post by Thad Floryan
I'm really surprised I haven't heard of it before because astronomy and
navigation were my primary hobbies beginning in the early 1950s and, in
fact, astronomy was my first merit badge in the Boy Scouts. Signalling
was the second merit badge I earned and I was the first kid in the troop
to get that badge in over 40 years -- I'm sure that was contributory to
my career with computers, electronics, telecom, and related.
What was "signalling" to a 1950s Boy Scout? Morse code and semaphore
(the flag waving kind that led to the creation of the peace sign[*]) come
to mind. But Claude Shannon's math research predicting the limits of
signal transmission in the presence of interference of the late 40s
probably meant some exciting times in overall signaling research starting
around then.

[*] The flag positions for N and D, being the initials of "nuclear
disarmament", were superimposed on a circle to create the "chicken
foot" design. Semaphore "flags" in drawings of crowd scenes are
used as code in another juvenile literature series that would appeal
to nautical / historical fiction minded kids: Arthur Ransome's
_Swallows and Amazons_ series (although no semaphores in the first
book, which names the series).

Elijah
------
had a kid very interested in nautical and historical fiction
b***@MIX.COM
2014-04-30 16:50:51 UTC
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Post by Thad Floryan
I was wondering why "things" seemed zippier recently, and the ping result
was the first clue "something" improved. The second clue was NOT seeing
"tata" in the traceroute any more -- it used to be at the GreatOaks facility.
My jaw dropped seeing "chicago.il" at hop 6 in the traceroute (see below),
but there's no apparent detrimental effect.
6 te-0-2-0-0-cr01.chicago.il.ibone.comcast.net (68.86.91.121) 23.596 ms 21.662 ms 25.984 ms
The RTT seems too short for it to actually be in Chicago. I'm guessing
it's much closer to San Jose. Looking from Tuscon, Arizona -

messy:/home/billy> tra 68.86.91.121
traceroute to 68.86.91.121 (68.86.91.121), 30 hops max, 40 byte packets
1 Firewall.Opus1.COM (192.245.12.78) 0.696 ms 0.618 ms 0.731 ms
2 Opus-GW.Opus1.COM (207.182.35.49) 1.569 ms 1.559 ms 1.545 ms
3 209.104.3.89 (209.104.3.89) 2.016 ms 2.343 ms 2.730 ms
4 login-gw.twtelecom.net (206.169.93.41) 2.854 ms 3.547 ms 3.536 ms
5 sjc1-pr1-xe-0-3-0-0.us.twtelecom.net (66.192.249.22) 26.386 ms 26.377 ms 26.577 ms
6 be-10-301-pe01.11greatoaks.ca.ibone.comcast.net (75.149.229.1) 28.740 ms 27.155 ms 26.422 ms
7 pos-2-6-0-0-cr01.sanjose.ca.ibone.comcast.net (68.86.87.149) 31.761 ms * *

Speaking of Greatoaks, and hop 6, heh.....

Here's the path from my hosting to yours -

messy:/home/billy> tra 192.220.75.50
traceroute to 192.220.75.50 (192.220.75.50), 30 hops max, 40 byte packets
1 Firewall.Opus1.COM (192.245.12.78) 0.485 ms 0.445 ms 0.544 ms
2 Opus-GW.Opus1.COM (207.182.35.49) 1.399 ms 1.391 ms 1.378 ms
3 209.104.3.89 (209.104.3.89) 1.933 ms 1.950 ms 2.025 ms
4 login-gw.twtelecom.net (206.169.93.41) 2.203 ms 2.188 ms 2.175 ms
5 sjc1-pr1-xe-0-3-0-0.us.twtelecom.net (66.192.249.22) 26.188 ms 26.151 ms 26.276 ms
6 xe-0.equinix.snjsca04.us.bb.gin.ntt.net (206.223.116.12) 26.673 ms 25.617 ms 26.117 ms
7 ae-2.r00.mlpsca01.us.bb.gin.ntt.net (129.250.4.101) 28.715 ms 28.603 ms 29.175 ms
8 ae-0.r00.mlpsca01.us.wh.verio.net (129.250.26.161) 27.519 ms 27.900 ms 27.532 ms
9 ge-25.a0454d.mlpsca01.us.wh.verio.net (128.121.129.26) 27.521 ms 28.000 ms 28.345 ms
10 thadlabs.com (192.220.75.50) 26.931 ms 27.132 ms 26.940 ms

I'd liked to have looked at the return, but it seems just about no one
is allowing use of a loose source route gateway any more.

Billy Y..
--
sub #'9+1 ,r0 ; convert ascii byte
add #9.+1 ,r0 ; to an integer
bcc 20$ ; not a number
Thad Floryan
2014-04-30 23:23:43 UTC
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Post by b***@MIX.COM
Post by Thad Floryan
I was wondering why "things" seemed zippier recently, and the ping result
was the first clue "something" improved. The second clue was NOT seeing
"tata" in the traceroute any more -- it used to be at the GreatOaks facility.
My jaw dropped seeing "chicago.il" at hop 6 in the traceroute (see below),
but there's no apparent detrimental effect.
6 te-0-2-0-0-cr01.chicago.il.ibone.comcast.net (68.86.91.121) 23.596 ms 21.662 ms 25.984 ms
The RTT seems too short for it to actually be in Chicago. I'm guessing
it's much closer to San Jose. [...]
Hi Billy,

That make good sense. I would expect Chicago to be around 50 or so,
and Reston VA roughly 70 to 90. One friend also on NTT-Verio has his
hosting at a Verio center on the East Coast and 78 - 80ms is common.

I was surprised to learn that NTT-Verio has scores (100s ?) of data
centers worldwide and NTT operates [a] major backbone(s). That's a
far cry from the Verio that acquired Best in the mid-1990s.

I'm been extremely satisfied with their service since the mid-1990s
and it keeps getting better all the time and I'm still paying the
same monthly rate that I did in the mid-1990s. Many of my friends
who moved to Verio since 2000 or so on my recommendation are on their
$9.95/month plan for webhosting, email, shell access, and more on a
FreeBSD system:

http://www.verio.com/web-hosting/plans/

and they're glad they moved.
Post by b***@MIX.COM
[...]
Here's the path from my hosting to yours -
messy:/home/billy> tra 192.220.75.50
traceroute to 192.220.75.50 (192.220.75.50), 30 hops max, 40 byte packets
1 Firewall.Opus1.COM (192.245.12.78) 0.485 ms 0.445 ms 0.544 ms
2 Opus-GW.Opus1.COM (207.182.35.49) 1.399 ms 1.391 ms 1.378 ms
3 209.104.3.89 (209.104.3.89) 1.933 ms 1.950 ms 2.025 ms
4 login-gw.twtelecom.net (206.169.93.41) 2.203 ms 2.188 ms 2.175 ms
5 sjc1-pr1-xe-0-3-0-0.us.twtelecom.net (66.192.249.22) 26.188 ms 26.151 ms 26.276 ms
6 xe-0.equinix.snjsca04.us.bb.gin.ntt.net (206.223.116.12) 26.673 ms 25.617 ms 26.117 ms
7 ae-2.r00.mlpsca01.us.bb.gin.ntt.net (129.250.4.101) 28.715 ms 28.603 ms 29.175 ms
8 ae-0.r00.mlpsca01.us.wh.verio.net (129.250.26.161) 27.519 ms 27.900 ms 27.532 ms
9 ge-25.a0454d.mlpsca01.us.wh.verio.net (128.121.129.26) 27.521 ms 28.000 ms 28.345 ms
10 thadlabs.com (192.220.75.50) 26.931 ms 27.132 ms 26.940 ms
I'd liked to have looked at the return, but it seems just about no one
is allowing use of a loose source route gateway any more.
Any speculation why that would be so? Just curious.

Thad
b***@MIX.COM
2014-06-23 16:43:00 UTC
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Post by Thad Floryan
Post by b***@MIX.COM
I'd liked to have looked at the return, but it seems just about no one
is allowing use of a loose source route gateway any more.
Any speculation why that would be so? Just curious.
My (better late than never, heh) guess is it now defaults
to off, and no one's bothering to turn it on. It might be
a security problem, though I can't imagine how.

Billy Y..
--
sub #'9+1 ,r0 ; convert ascii byte
add #9.+1 ,r0 ; to an integer
bcc 20$ ; not a number
Bhairitu
2014-04-30 19:03:13 UTC
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Post by Thad Floryan
I was wondering why "things" seemed zippier recently, and the ping result
was the first clue "something" improved. The second clue was NOT seeing
"tata" in the traceroute any more -- it used to be at the GreatOaks facility.
My jaw dropped seeing "chicago.il" at hop 6 in the traceroute (see below),
but there's no apparent detrimental effect.
FWIW, I'm in Los Altos near Foothill Expressway and I-280 and my email/web
hosting is with NTT-Verio at their center in Milpitas which, per my gcdist
REGULUS bash 1/5672> gcdist
GREAT CIRCLE CALCULATOR, GCDIST 1.1 1987 by Thad Floryan
Origin name: .
Destination name: NTT Verio
Latitude of NTT Verio (Deg Min Sec {N or S}): 37 25 58.66 N
Longitude of NTT Verio (Deg Min Sec {E or W}): 121 53 59.7 W
From: 37° 20' 17.2"N, 122° 04' 17.1"W Home
To: 37° 25' 58.7"N, 121° 53' 59.7"W NTT Verio
Bearing = 55° 06.5', Distance = 10.0 nm, 11.5 miles
procyon bash 3089/3091> ping thadlabs.com
PING thadlabs.com (192.220.75.50) 56(84) bytes of data.
64 bytes from thadlabs.com (192.220.75.50): icmp_seq=1 ttl=53 time=14.5 ms
64 bytes from thadlabs.com (192.220.75.50): icmp_seq=2 ttl=53 time=14.3 ms
64 bytes from thadlabs.com (192.220.75.50): icmp_seq=3 ttl=53 time=15.0 ms
64 bytes from thadlabs.com (192.220.75.50): icmp_seq=4 ttl=53 time=14.6 ms
64 bytes from thadlabs.com (192.220.75.50): icmp_seq=5 ttl=53 time=13.9 ms
^C
--- thadlabs.com ping statistics ---
5 packets transmitted, 5 received, 0% packet loss, time 4514ms
rtt min/avg/max/mdev = 13.957/14.504/15.024/0.382 ms
procyon bash 3089/3091> traceroute thadlabs.com
traceroute to thadlabs.com (192.220.75.50), 30 hops max, 60 byte packets
1 router (172.20.20.1) 1.268 ms 1.473 ms 2.971 ms
2 cablegw (24.6.16.1) 12.083 ms 17.341 ms 18.722 ms
3 68.85.216.13 (68.85.216.13) 19.232 ms 18.916 ms 19.035 ms
4 te-1-1-0-12-ar01.oakland.ca.sfba.comcast.net (69.139.199.102) 21.199 ms 22.041 ms 21.699 ms
5 be-90-ar01.sfsutro.ca.sfba.comcast.net (68.85.155.14) 22.092 ms 22.176 ms 22.264 ms
6 te-0-2-0-0-cr01.chicago.il.ibone.comcast.net (68.86.91.121) 23.596 ms 21.662 ms 25.984 ms
7 he-0-10-0-1-pe03.11greatoaks.ca.ibone.comcast.net (68.86.85.234) 23.401 ms 15.078 ms 13.621 ms
8 ae-13.r07.snjsca04.us.bb.gin.ntt.net (129.250.66.33) 17.800 ms 17.784 ms 17.131 ms
9 ae-2.r00.mlpsca01.us.bb.gin.ntt.net (129.250.4.101) 14.869 ms 15.370 ms 21.684 ms
10 ae-0.r00.mlpsca01.us.wh.verio.net (129.250.26.161) 21.403 ms 21.494 ms 21.610 ms
11 ge-25.a0454d.mlpsca01.us.wh.verio.net (128.121.129.26) 21.031 ms 21.643 ms 21.717 ms
12 thadlabs.com (192.220.75.50) 19.480 ms 19.963 ms 20.584 ms
procyon bash 3089/3091>
Thad
And it appears that AT&T may be throttling customers so they can extort
money from Netflix too. U-Verse has been fine for streaming until
recently when I started getting rebuffering last week on both Netflix
and Hulu+. I ran a speed test last night and found that my usuall 10-12
mbps was clear down to 4 mbps. Time to call AT&T and complain.

I also heard a person at the table next to me at Starbucks complain
about their AT&T broadband service.
Thad Floryan
2014-04-30 23:05:47 UTC
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Post by Bhairitu
[...]
And it appears that AT&T may be throttling customers so they can extort
money from Netflix too. U-Verse has been fine for streaming until
recently when I started getting rebuffering last week on both Netflix
and Hulu+. I ran a speed test last night and found that my usuall 10-12
mbps was clear down to 4 mbps. Time to call AT&T and complain.
I also heard a person at the table next to me at Starbucks complain
about their AT&T broadband service.
Seems it's [U-Verse] deteriorating. Failing copper plant?

AT&T supplies major backbone service but they cannot provide
what could be construed to be "real" broadband to consumers.

Here's the Internet traffic report:

http://www.internettrafficreport.com/

Backbone latency of AT&T, CenturyLink, Cogent, Level3, NTT,
Savvis, SBC, Sprint, Verizon, and XO:

http://www.internetpulse.net/

AT&T Global IP Network home page with links to Current Performance,
Network Latency, Network Loss, and Averages:

http://ipnetwork.bgtmo.ip.att.net/pws/index.html

I suppose AT&T is too embarrassed to show U-Verse performance, :-)

and Verizon latency:

http://www.verizonenterprise.com/about/network/latency/

Thad
Kristian M Zoerhoff
2014-05-01 05:21:36 UTC
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Post by Bhairitu
Post by Thad Floryan
I was wondering why "things" seemed zippier recently, and the ping result
was the first clue "something" improved. The second clue was NOT seeing
"tata" in the traceroute any more -- it used to be at the GreatOaks facility.
My jaw dropped seeing "chicago.il" at hop 6 in the traceroute (see below),
but there's no apparent detrimental effect.
FWIW, I'm in Los Altos near Foothill Expressway and I-280 and my email/web
hosting is with NTT-Verio at their center in Milpitas which, per my gcdist
REGULUS bash 1/5672> gcdist
GREAT CIRCLE CALCULATOR, GCDIST 1.1 1987 by Thad Floryan
Origin name: .
Destination name: NTT Verio
Latitude of NTT Verio (Deg Min Sec {N or S}): 37 25 58.66 N
Longitude of NTT Verio (Deg Min Sec {E or W}): 121 53 59.7 W
From: 37? 20' 17.2"N, 122? 04' 17.1"W Home
To: 37? 25' 58.7"N, 121? 53' 59.7"W NTT Verio
Bearing = 55? 06.5', Distance = 10.0 nm, 11.5 miles
procyon bash 3089/3091> ping thadlabs.com
PING thadlabs.com (192.220.75.50) 56(84) bytes of data.
64 bytes from thadlabs.com (192.220.75.50): icmp_seq=1 ttl=53 time=14.5 ms
64 bytes from thadlabs.com (192.220.75.50): icmp_seq=2 ttl=53 time=14.3 ms
64 bytes from thadlabs.com (192.220.75.50): icmp_seq=3 ttl=53 time=15.0 ms
64 bytes from thadlabs.com (192.220.75.50): icmp_seq=4 ttl=53 time=14.6 ms
64 bytes from thadlabs.com (192.220.75.50): icmp_seq=5 ttl=53 time=13.9 ms
^C
--- thadlabs.com ping statistics ---
5 packets transmitted, 5 received, 0% packet loss, time 4514ms
rtt min/avg/max/mdev = 13.957/14.504/15.024/0.382 ms
procyon bash 3089/3091> traceroute thadlabs.com
traceroute to thadlabs.com (192.220.75.50), 30 hops max, 60 byte packets
1 router (172.20.20.1) 1.268 ms 1.473 ms 2.971 ms
2 cablegw (24.6.16.1) 12.083 ms 17.341 ms 18.722 ms
3 68.85.216.13 (68.85.216.13) 19.232 ms 18.916 ms 19.035 ms
4 te-1-1-0-12-ar01.oakland.ca.sfba.comcast.net (69.139.199.102) 21.199 ms 22.041 ms 21.699 ms
5 be-90-ar01.sfsutro.ca.sfba.comcast.net (68.85.155.14) 22.092 ms 22.176 ms 22.264 ms
6 te-0-2-0-0-cr01.chicago.il.ibone.comcast.net (68.86.91.121) 23.596 ms 21.662 ms 25.984 ms
7 he-0-10-0-1-pe03.11greatoaks.ca.ibone.comcast.net (68.86.85.234) 23.401 ms 15.078 ms 13.621 ms
8 ae-13.r07.snjsca04.us.bb.gin.ntt.net (129.250.66.33) 17.800 ms 17.784 ms 17.131 ms
9 ae-2.r00.mlpsca01.us.bb.gin.ntt.net (129.250.4.101) 14.869 ms 15.370 ms 21.684 ms
10 ae-0.r00.mlpsca01.us.wh.verio.net (129.250.26.161) 21.403 ms 21.494 ms 21.610 ms
11 ge-25.a0454d.mlpsca01.us.wh.verio.net (128.121.129.26) 21.031 ms 21.643 ms 21.717 ms
12 thadlabs.com (192.220.75.50) 19.480 ms 19.963 ms 20.584 ms
procyon bash 3089/3091>
Thad
And it appears that AT&T may be throttling customers so they can extort
money from Netflix too. U-Verse has been fine for streaming until
recently when I started getting rebuffering last week on both Netflix
and Hulu+. I ran a speed test last night and found that my usuall 10-12
mbps was clear down to 4 mbps. Time to call AT&T and complain.
I also heard a person at the table next to me at Starbucks complain
about their AT&T broadband service.
My formerly 12Mbps has been more like 8-9 lately, depending on time of day,
but occasionally spiking back to 12 again (it's at 12.4 right now). I'm
chalking it up to general AT&T incompetence; I doubt they're smart enough to
implement Netflix throttling.
--
Kristian M Zoerhoff
Kevin McMurtrie
2014-05-01 02:28:01 UTC
Permalink
Raw Message
Post by Thad Floryan
I was wondering why "things" seemed zippier recently, and the ping result
was the first clue "something" improved. The second clue was NOT seeing
"tata" in the traceroute any more -- it used to be at the GreatOaks facility.
My jaw dropped seeing "chicago.il" at hop 6 in the traceroute (see below),
but there's no apparent detrimental effect.
FWIW, I'm in Los Altos near Foothill Expressway and I-280 and my email/web
hosting is with NTT-Verio at their center in Milpitas which, per my gcdist
REGULUS bash 1/5672> gcdist
GREAT CIRCLE CALCULATOR, GCDIST 1.1 1987 by Thad Floryan
Origin name: .
Destination name: NTT Verio
Latitude of NTT Verio (Deg Min Sec {N or S}): 37 25 58.66 N
Longitude of NTT Verio (Deg Min Sec {E or W}): 121 53 59.7 W
From: 37° 20' 17.2"N, 122° 04' 17.1"W Home
To: 37° 25' 58.7"N, 121° 53' 59.7"W NTT Verio
Bearing = 55° 06.5', Distance = 10.0 nm, 11.5 miles
procyon bash 3089/3091> ping thadlabs.com
PING thadlabs.com (192.220.75.50) 56(84) bytes of data.
64 bytes from thadlabs.com (192.220.75.50): icmp_seq=1 ttl=53 time=14.5 ms
64 bytes from thadlabs.com (192.220.75.50): icmp_seq=2 ttl=53 time=14.3 ms
64 bytes from thadlabs.com (192.220.75.50): icmp_seq=3 ttl=53 time=15.0 ms
64 bytes from thadlabs.com (192.220.75.50): icmp_seq=4 ttl=53 time=14.6 ms
64 bytes from thadlabs.com (192.220.75.50): icmp_seq=5 ttl=53 time=13.9 ms
^C
--- thadlabs.com ping statistics ---
5 packets transmitted, 5 received, 0% packet loss, time 4514ms
rtt min/avg/max/mdev = 13.957/14.504/15.024/0.382 ms
procyon bash 3089/3091> traceroute thadlabs.com
traceroute to thadlabs.com (192.220.75.50), 30 hops max, 60 byte packets
1 router (172.20.20.1) 1.268 ms 1.473 ms 2.971 ms
2 cablegw (24.6.16.1) 12.083 ms 17.341 ms 18.722 ms
3 68.85.216.13 (68.85.216.13) 19.232 ms 18.916 ms 19.035 ms
4 te-1-1-0-12-ar01.oakland.ca.sfba.comcast.net (69.139.199.102) 21.199 ms
22.041 ms 21.699 ms
5 be-90-ar01.sfsutro.ca.sfba.comcast.net (68.85.155.14) 22.092 ms 22.176 ms 22.264 ms
6 te-0-2-0-0-cr01.chicago.il.ibone.comcast.net (68.86.91.121) 23.596 ms
21.662 ms 25.984 ms
7 he-0-10-0-1-pe03.11greatoaks.ca.ibone.comcast.net (68.86.85.234) 23.401
ms 15.078 ms 13.621 ms
8 ae-13.r07.snjsca04.us.bb.gin.ntt.net (129.250.66.33) 17.800 ms 17.784 ms 17.131 ms
9 ae-2.r00.mlpsca01.us.bb.gin.ntt.net (129.250.4.101) 14.869 ms 15.370 ms
21.684 ms
10 ae-0.r00.mlpsca01.us.wh.verio.net (129.250.26.161) 21.403 ms 21.494 ms
21.610 ms
11 ge-25.a0454d.mlpsca01.us.wh.verio.net (128.121.129.26) 21.031 ms 21.643 ms 21.717 ms
12 thadlabs.com (192.220.75.50) 19.480 ms 19.963 ms 20.584 ms
procyon bash 3089/3091>
Thad
Some routers could be named after their remote endpoints. 68.86.91.121
could have sent your data to Chicago in one hop but instead sent it
along local wires to South San Jose.
Thad Floryan
2014-05-01 03:13:11 UTC
Permalink
Raw Message
Post by Kevin McMurtrie
Post by Thad Floryan
[...]
My jaw dropped seeing "chicago.il" at hop 6 in the traceroute (see below),
but there's no apparent detrimental effect.
[...]
6 te-0-2-0-0-cr01.chicago.il.ibone.comcast.net (68.86.91.121) 23.596 ms
21.662 ms 25.984 ms
[...]
Some routers could be named after their remote endpoints. 68.86.91.121
could have sent your data to Chicago in one hop but instead sent it
along local wires to South San Jose.
Hi Kevin,

Interesting possibility but still a bit strange seeing "Chicago"
in a Bay Area route -- perhaps the tech who set it up moved here
from Chicago and wanted something to remind him of home. :-)

"Normally" I'd see hop IPs named after their [presumed] physical
locations which is how I'd do it to facilitate dispatching techs
when something goes awry.

Naming critical infrastructure should be something obvious. I
used to cringe at client sites on the first visit when I'm hearing
"MEGATRON this" and "MEGATRON that" and I haven't a clue that he's
talking about their primary server. :-)

I'd prefer, say, ws1, ws2, ..., wsx for web servers so I can match
up the name to a physical position in a rack assuming they've been
slotted by number and not alphabetically using some arbitrary name
from a movie.

But that's just me and now that I'm technically retired most of my
home systems bear astronomical names: altair, deneb, procyon, rigel,
albireo, antares, cygnus, etc etc etc. which is OK for my purposes
since I have only 25 systems in my home office and I can see them
all from my chair; there are a score of Sun and Sun clone machines
in another room that I don't use too much nowadays. My Solaris 10
box is an AMD64 dual-core, my OpenIndiana box is an AMD64 dual-core
as is my CentOS box. My AMD64 quad-core is presently only running
Win7 but I plan to dual-boot it and am still researching what the
2nd boot drive will hold:

Loading Image... 262kB

And, yes, that's the 3D Pinball Space Cadet in the menu that I simply
copied over from one of my WinXP systems -- don't want to lose a
great game like that. :-)

Thad
b***@MIX.COM
2014-06-23 16:59:22 UTC
Permalink
Raw Message
Post by Thad Floryan
Naming critical infrastructure should be something obvious. I
used to cringe at client sites on the first visit when I'm hearing
"MEGATRON this" and "MEGATRON that" and I haven't a clue that he's
talking about their primary server. :-)
I'd prefer, say, ws1, ws2, ..., wsx for web servers so I can match
up the name to a physical position in a rack assuming they've been
slotted by number and not alphabetically using some arbitrary name
from a movie.
An opposing point of view -

http://daringfireball.net/linked/2010/03/09/hp-license-plate-domains

| Yesterday, after linking to "http://h20435.www2.hp.com/t5/Voodoo-Blog/
| The-HP-s-Slate-Device-Runs-The-Complete-Internet-Including-Flash/ba-p/
| 53838", I asked what the deal was with that crazy server name. A DF
| reader who works at HP emailed:
|
| | Internally it's called something stupid, like a "license plate name"
| | or somesuch. HP IT does that so they can physically locate a server
| | when it goes down.
| |
| | Externally, you're seeing how one department's braindead internal
| | policy designed for their convenience reduces the convenience of
| | the entire rest of the company (and our customers). I'd blame Randy
| | Mott (of WalMart pedigree) who has proven to be quite a Napoleon
| | (or perhaps Brutus is a better example?) when it comes to turf
| | battles, but I think that policy pre-dated him.
| |
| | Many folks internally in HP hate those license plate external URLs
| | but there's nothing we can do about it. The policy has been set from
| | on-high.
|
| So because of a dictum from the IT department, HP -- one of the biggest,
| proudest, and most successful companies in the history of the computer
| business -- has URLs that are cryptic, long, and ugly. Whereas anyone
| with, say, a Tumblr account, can get far nicer URLs for free.

Billy Y..
--
sub #'9+1 ,r0 ; convert ascii byte
add #9.+1 ,r0 ; to an integer
bcc 20$ ; not a number
Eli the Bearded
2014-06-23 23:21:21 UTC
Permalink
Raw Message
Post by b***@MIX.COM
Post by Thad Floryan
Naming critical infrastructure should be something obvious. I
...
Post by b***@MIX.COM
Post by Thad Floryan
I'd prefer, say, ws1, ws2, ..., wsx for web servers so I can match
up the name to a physical position in a rack assuming they've been
slotted by number and not alphabetically using some arbitrary name
from a movie.
An opposing point of view -
http://daringfireball.net/linked/2010/03/09/hp-license-plate-domains
| Yesterday, after linking to "http://h20435.www2.hp.com/t5/Voodoo-Blog/
| The-HP-s-Slate-Device-Runs-The-Complete-Internet-Including-Flash/ba-p/
| 53838", I asked what the deal was with that crazy server name. A DF
...
Post by b***@MIX.COM
| | Externally, you're seeing how one department's braindead internal
| | policy designed for their convenience reduces the convenience of
| | the entire rest of the company (and our customers). I'd blame Randy
| | Mott (of WalMart pedigree) who has proven to be quite a Napoleon
| | (or perhaps Brutus is a better example?) when it comes to turf
| | battles, but I think that policy pre-dated him.
There's a really simple solution to all this. Use one set of names
for servers and another set of names for services.

Externally, the website at $WORK is www.$WORK.com. Under the hood that's
a CNAME that points to a pair of IP addresses at separate colos. Further
under the hood, those IP addresses are really network devices that divide
traffic to a variety of hosts at the colos. And those final hosts are
named in a way Thad would like. There is no reason for anyone outside
$WORK to know which colo or rack the traffic ends up visiting. Forcing
that upon outsiders is just stupid.

Elijah
------
and when device-3 fails and is replaced with device-4 noone need notice
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