http://www.sciencedaily.com/releases/2012/06/120629142607.htm
From: Paul WALL pauldotw...@gmail.com
To: NANOG list nanog@nanog.org
Sent: Saturday, June 30, 2012 6:16 PM
Subject: F-ckin Leap Seconds, how do they work?
Comments?
Drive Slow
Paul
On Wed, 2012-07-04 at 20:48 -0700, Owen DeLong wrote:
Given that we don't seem to be able to eliminate the absurdity of DST,
I doubt that either of those proposals is likely to fly.
Russian govt. did eliminate DST.
http://www.rt.com/news/daylight-saving-time-abolished/
--vadim
On Jul 5, 2012, at 1:35 PM, Vadim Antonov wrote:
On Wed, 2012-07-04 at 20:48 -0700, Owen DeLong wrote:
Given that we don't seem to be able to eliminate the absurdity of DST,
I doubt that either of those proposals is likely to fly.
Russian govt. did eliminate DST.
On Thu, 2012-07-05 at 14:00 +0400, Dmitry Burkov wrote:
On Jul 5, 2012, at 1:35 PM, Vadim Antonov wrote:
On Wed, 2012-07-04 at 20:48 -0700, Owen DeLong wrote:
Given that we don't seem to be able to eliminate the absurdity of DST,
I doubt that either of those proposals is likely to fly.
On Wed, Jul 04, 2012 at 06:10:45PM -0400, William Herrin wrote:
IMO, leap seconds are a really bad idea. Let the vanishingly few
people who care about a precision match against the solar day keep
track of the deviation from clock time and let everybody else have a
*simple* clock year after
Live further north and you will see the difference dst makes.
On Jul 4, 2012, at 11:48 PM, Owen DeLong o...@delong.com wrote:
Given that we don't seem to be able to eliminate the absurdity of DST,
I doubt that either of those proposals is likely to fly.
On 05/07/2012 11:34, Jared Mauch wrote:
Live further north and you will see the difference dst makes.
This is true. Ireland, UK, NL, Denmark, northern Germany and northern
Poland are at a similar latitude to Polar Bear Provincial Park by Hudson
Bay. With DST, we get much more usable evenings
On 05/07/12 13:05, Nick Hilliard wrote:
On 05/07/2012 11:34, Jared Mauch wrote:
Live further north and you will see the difference dst makes.
This is true. Ireland, UK, NL, Denmark, northern Germany and northern
Poland are at a similar latitude to Polar Bear Provincial Park by Hudson
Bay.
On Jul 5, 2012, at 7:18 AM, Henning Stener h.ste...@sportradar.com wrote:
On 05/07/12 13:05, Nick Hilliard wrote:
On 05/07/2012 11:34, Jared Mauch wrote:
Live further north and you will see the difference dst makes.
This is true. Ireland, UK, NL, Denmark, northern Germany and northern
I'm only at (aproxamately) 42.28755874876601 north. Once you go near 60 north the
value changes significantly.
There is a band of latitudes where it does make more sense.
It sure isn't Indiana.
http://thinkprogress.org/climate/2010/03/13/205642/daylight-saving-time-energy-dst/?mobile=nc
NANOG Folks -
IPv6 - You may love it (or hate it) but either way it would be good to take
just a few moments to complete the Global IPv6 Deployment Survey
(see attached).The survey is being conducted in cooperation with the
Regional Internet Registries in order to better
Folks,
A bunch of IPv6 security tools I produced these last couple of years
have been posted online at: http://ipv6securitylab.org/ipv6toolbox.html.
Not sure whether this was really intended, but since a number of folks
have already noted (off-list) that this release has been announced on
a
If you want to run a Google-patched NTP server and talk to it, you're welcome
to. The rest of us would prefer to just get it right, so we don't have to
get lied to.
The timescale implementation in NTP is correct accoring to how UTC is
defined. I suggest leaving it alone, chances of
On one of my BSD boxes. /usr/src/share/zoneinfo/leapseconds, I see no
-
No, but they're allowed; see Figure 9 of RFC 5905:
Steve,
I commented that it was stated that we where doing both positive and
negative corrections. Only positive corrections have been made, and
yes, negative are
Leap seconds are to align the artificial and very stable atomic timescale
with the irregular and slowing rotation of the earth.
You are assuming facts not in evidence. The rotation is merely irregular w=
ithin the capabilities of our scheme of measurement, calculation, and obser=
vation.
On Thu, Jul 5, 2012 at 9:55 AM, Peter Lothberg r...@stupi.se wrote:
Leap seconds are to align the artificial and very stable atomic timescale
with the irregular and slowing rotation of the earth.
You are assuming facts not in evidence. The rotation is merely irregular w=
ithin the
On Jul 5, 2012, at 10:49 48AM, Peter Lothberg wrote:
On one of my BSD boxes. /usr/src/share/zoneinfo/leapseconds, I see no
-
No, but they're allowed; see Figure 9 of RFC 5905:
Steve,
I commented that it was stated that we where doing both positive and
negative corrections. Only
Most systems that deals with time has a slightly different way of
doing it than U*ix.. ref: CCIR 457-1
Like this:
56113.6294791667
56113.6301736111
56113 is MJD, modified julian date (http://tycho.usno.navy.mil/mjd.html)
Want to knew the time between two observations, just subtract and
On Tue, Jul 3, 2012 at 11:59 PM, Majdi S. Abbas m...@latt.net wrote:
On Tue, Jul 03, 2012 at 11:33:35PM -0400, Tyler Haske wrote:
4 years. These things are supposed to be synced to a NTP source
anyway.
Easiest solution is just remove leap second functionality from
mainline code, and
Has anyone seen this yet? Looks like Cisco was forcing people to join its Cloud
service through an update for it's consumer level routers.
http://www.neowin.net/news/cisco-locks-users-out-of-their-routers-requires-invasive-cloud-service
-Mario Eirea
smime.p7s
Description: S/MIME cryptographic
Rather than discussing the pros and cons of UTC and leap seconds, just
create your own time system.
You could call it OpenTime. OpenTime will use NTP servers where the
Stratum 1 servers are synced to some time standard that doesn't care
about leap seconds. That way the consumer can
At 15:51 05/07/2012 +, Mario Eirea wrote:
Has anyone seen this yet? Looks like Cisco was forcing people to join its
Cloud service through an update for it's consumer level routers.
http://www.neowin.net/news/cisco-locks-users-out-of-their-routers-requires-invasive-cloud-service
-Mario
At 15:51 05/07/2012 +, Mario Eirea wrote:
Has anyone seen this yet? Looks like Cisco was forcing people to join its
Cloud service through an update for it's consumer level routers.
http://www.neowin.net/news/cisco-locks-users-out-of-their-routers-requires-invasive-cloud-service
On Jul 5, 2012, at 12:08, Hank Nussbacher wrote:
For those of us who have not kept up with every latest feature that Cisco
rolls out across all its platforms, can someone explain this new service? Is
it like Windows update, where Cisco will auto-update your router s/w and
thereby brick
On Jul 5, 2012, at 11:24, Joe Greco wrote:
And what happens when your *cough* router isn't actually on the
Internet? How can it be managed and upgraded on a regular old network?
If there is no internet connection, you get a very limited page that's
apparently only really good to get you back
I'm only at (aproxamately) 42.28755874876601 north. Once you go near 60 north
the value changes significantly.
There is a band of latitudes where it does make more sense.
Why punish the rest of us to accommodate a few people who live between about
50º and 55º latitude?
Owen
On Thu, 5 Jul 2012, Sean Harlow wrote:
On Jul 5, 2012, at 11:24, Joe Greco wrote:
And what happens when your *cough* router isn't actually on the
Internet? How can it be managed and upgraded on a regular old network?
If there is no internet connection, you get a very limited page that's
On Jul 5, 2012, at 12:42, Jon Lewis wrote:
Routers are sometimes used on networks that don't have internet connectivity
[by design]. This seems amazingly short-sighted for a company that's been
around selling routing gear as long as cisco.
Not to defend Cisco's idiotic decision, but in
Let's remember, this is regarding Cisco's consumer grade routers (formerly
linksys) which are primarily intended for connecting small networks (homes,
offices) to the internet over some type of broadband connection.
Can they be used. On a network with no internet connectivity? Sure. But this,
In a message written on Thu, Jul 05, 2012 at 03:51:40PM +, Mario Eirea
wrote:
Has anyone seen this yet? Looks like Cisco was forcing people to join its
Cloud service through an update for it's consumer level routers.
Perhaps going right to the source would be educational:
Technical users could always just flash DD-WRT onto the device and replace the
Linksys/Cisco firmware; then you have a much more robust system without any big
brother stuff.
Hi folks,
I gave my HR folks a screening question to ask candidates for an IP
expert position. I've gotten some unexpected answers, so I want to
do a sanity check and make sure I'm not asking something unreasonable.
And by unexpected I don't mean naively incorrect answers, I mean
On Thu, Jul 05, 2012 at 09:33:05AM -0700, Owen DeLong wrote:
I'm only at (aproxamately) 42.28755874876601 north. Once you go near 60
north the value changes significantly.
There is a band of latitudes where it does make more sense.
Why punish the rest of us to accommodate a few
My answer to that questionwould be No..why would I ever blanket block ICMP?
If I'm that stupid, I shouldn't be deploying firewalls at all.
I also assume I wouldn't get the job after answering that...
Thomas York
-Original Message-
From: William Herrin [mailto:b...@herrin.us]
Sent:
Seems fairly straightforward to me. It'll break path MTU discovery.
I would hope someone applying for an IP expert position would know that.
Could HR be mangling the question or something?
Oliver
-
Oliver Garraux
Check out my blog:
hi all,
Is there anyone active on this list who is actively working on/at
ipv6forum.com/nav6.org?
I tried to contact both administrative and technical contacts listed
under the domain, but no response so far.
Please unicast me in case you do. :)
Thanks in advance!
--
Wouter Prins
That's a horrible question for a non-technical HR person to pose to a
candidate - It's impossible for the candidate to ask clarifying
questions to make sure they understand what you are looking for, plus
you may have a strong candidate who gets it wrong (for whatever reason),
but if they were
In a message written on Thu, Jul 05, 2012 at 01:02:08PM -0400, William Herrin
wrote:
You implement a firewall on which you block all ICMP packets. What
part of the TCP protocol (not IP in general, TCP specifically)
malfunctions as a result?
My questions for you are:
1. As an expert who
On 7/5/2012 1:11 PM, Oliver Garraux wrote:
Seems fairly straightforward to me. It'll break path MTU discovery.
I would hope someone applying for an IP expert position would know that.
Could HR be mangling the question or something?
Oliver
-
Oliver
On Thu, Jul 5, 2012 at 1:11 PM, Oliver Garraux oli...@g.garraux.net wrote:
Seems fairly straightforward to me. It'll break path MTU discovery.
Since Bill said (not IP in general, TCP specifically), I don't think
PMTUD breaking is what he's looking for.
I'd venture more along the lines of lack
On Wed, Jul 4, 2012 at 17:22 UTC, Scott Howard wrote:
On Wed, Jul 4, 2012 at 8:50 AM, Jimmy Hess mysi...@gmail.com wrote:
The NTP daemon could still provide a configuration option to not
implement leap-seconds locally, or ignore the leap-second
announcement received. So the admin can
On 7/5/2012 5:54 PM, Peter Lothberg wrote:
Rather than discussing the pros and cons of UTC and leap seconds, just
create your own time system.
You could call it OpenTime. OpenTime will use NTP servers where the
Stratum 1 servers are synced to some time standard that doesn't care
about leap
On 2012-07-05 19:11 , Wouter Prins wrote:
hi all,
Is there anyone active on this list who is actively working on/at
ipv6forum.com/nav6.org?
I tried to contact both administrative and technical contacts listed
under the domain, but no response so far.
Latif Ladid la...@ladid.lu is the right
+1
I have people waive the I'm Cisco Certified flag in my face all the time.
Then proceed to ask me if we have a T1. To the point that it's no longer a
valuable achievement in my eyes.
I'm certified to perform CPR in the state of Florida... I should go apply
for a surgeon position at the local
On Thu, Jul 5, 2012 at 1:16 PM, David Coulson da...@davidcoulson.net wrote:
That's a horrible question for a non-technical HR person to pose to a
candidate - It's impossible for the candidate to ask clarifying questions to
make sure they understand what you are looking for, plus you may have a
Bill-
So, I'm curious, and others probably are too. What's the most popular
'wrong' answer?
:)
David
On 7/5/12 1:35 PM, William Herrin wrote:
On Thu, Jul 5, 2012 at 1:16 PM, David Coulson da...@davidcoulson.net wrote:
That's a horrible question for a non-technical HR person to pose to a
On Jul 5, 2012, at 10:20 AM, Darius Jahandarie djahanda...@gmail.com wrote:
On Thu, Jul 5, 2012 at 1:11 PM, Oliver Garraux oli...@g.garraux.net wrote:
Seems fairly straightforward to me. It'll break path MTU discovery.
Since Bill said (not IP in general, TCP specifically), I don't think
On Thu, Jul 5, 2012 at 1:20 PM, Darius Jahandarie djahanda...@gmail.com wrote:
On Thu, Jul 5, 2012 at 1:11 PM, Oliver Garraux oli...@g.garraux.net wrote:
Seems fairly straightforward to me. It'll break path MTU discovery.
Since Bill said (not IP in general, TCP specifically), I don't think
On Thu 2012-07-05T10:26:22 -0700, Roy hath writ:
Lets see. There have been nine leap seconds in 20 years. So at the
start of the next century the difference will probably be less than a minute
There is no predicting how large the decadal variations in LOD will be,
but the difference should be
This is exactly the issue comcast6.net is currently experiencing :). They seem
to be blocking ICMP completely and that is causing my HE IPv6 tunnel to be
unable to access their site from a browser.
On Jul 5, 2012, at 1:41 PM, William Herrin wrote:
On Thu, Jul 5, 2012 at 1:20 PM, Darius
On Jul 5, 2012, at 10:07 AM, Jared Mauch wrote:
On Thu, Jul 05, 2012 at 09:33:05AM -0700, Owen DeLong wrote:
I'm only at (aproxamately) 42.28755874876601 north. Once you go near 60
north the value changes significantly.
There is a band of latitudes where it does make more sense.
On Jul 5, 2012, at 8:14 AM, Marshall Eubanks marshall.euba...@gmail.com wrote:
And, by the way, the deformations and exchanges of angular momentum
that drive Earth rotation variations are probably the best understood
global geophysical processes there are. Absolutely no magic is
On 7/5/2012 10:42 AM, Steve Allen wrote:
On Thu 2012-07-05T10:26:22 -0700, Roy hath writ:
Lets see. There have been nine leap seconds in 20 years. So at the
start of the next century the difference will probably be less than a minute
There is no predicting how large the decadal variations in
Keep in mind, that to receive the update, the router has to be connected to
the internet. So routers that are not connected to the internet by design
will be unaffected.
-Grant
On Thu, Jul 5, 2012 at 11:55 AM, David Hubbard
dhubb...@dino.hostasaurus.com wrote:
Technical users could always
On Thu, Jul 5, 2012 at 2:02 PM, Roy r.engehau...@gmail.com wrote:
On 7/5/2012 10:42 AM, Steve Allen wrote:
On Thu 2012-07-05T10:26:22 -0700, Roy hath writ:
Lets see. There have been nine leap seconds in 20 years. So at the
start of the next century the difference will probably be less than
Technical users could always just flash DD-WRT onto the device and =
replace the Linksys/Cisco firmware; then you have a much more robust =
system without any big brother stuff.
Or Cisco could just omit the big brother stuff.
This is not a technological failure. In fact, automatic updates of
On Thu, Jul 5, 2012 at 11:07 AM, Joe Greco jgr...@ns.sol.net wrote:
Technical users could always just flash DD-WRT onto the device and =
replace the Linksys/Cisco firmware; then you have a much more robust =
system without any big brother stuff.
Or Cisco could just omit the big brother
On Thu, Jul 05, 2012 at 10:26:22AM -0700, Roy wrote:
Remember OpenTime is only for people who want their system clocks to
ignore leap seconds. I don't include myself among the possible users of
OpenTime.
Obviously you need a machine time, which is monotonous, high-resolution
(you don't
On Thu, Jul 05, 2012 at 01:45:54PM -0400, Derek Ivey wrote:
This is exactly the issue comcast6.net is currently experiencing :).
They seem to be blocking ICMP completely and that is causing my HE
IPv6 tunnel to be unable to access their site from a browser.
I've recently came across a
dd-wrt or openwrt are your friend on those devices. 8)
On Jul 5, 2012, at 11:51 AM, Mario Eirea mei...@charterschoolit.com wrote:
Has anyone seen this yet? Looks like Cisco was forcing people to join its
Cloud service through an update for it's consumer level routers.
Looks like they've modified their privacy policy in the last few days,
but from what I understand it was originally pretty bad, including the
collecting users' history and:
[...] right to shut down the users' account if it finds that they have
used the service for “obscene, pornographic, or
On Thu, Jul 5, 2012 at 1:42 PM, William Herrin wrote:
No, path MTU discovery is the answer I'm fishing for.
The TCP specifically part of the question confused the heck out of me.
PMTUD is an IP function in every way as far as I'm concerned. (If you're
saying that the way it's actually coded
I think if your goal is to see if they know that your shouldn't
blindly filter ICMP for IPv6, and you're specifically looking for
knowledge of PMTUD, then a better question would be Please list the
problems that could occur if all ICMPv6 traffic is blocked between two
host systems. Which should
He might be thinking of the MMS adjustment as a result of PMTUD, which
most people forget about BTW, but I agree: PMTUD isn't about TCP, so
tossing TCP in there just makes it a very odd question.
On Thu, Jul 5, 2012 at 4:04 PM, Terry Baranski
terry.baranski.l...@gmail.com wrote:
On Thu, Jul 5,
I suspect it'll be Corporations control Internet and our private
life well before tomorrow. Domestic operators do that for ages with
their branded routers and AFAIK DOCSIS is unimaginable without (part
of) this functionality. I went berzerk when discovered such a checkbox
in my home router, two
Isn't MTU discovery on IP and not TCP?
On Thu, Jul 5, 2012 at 11:11 AM, Oliver Garraux oli...@g.garraux.netwrote:
Seems fairly straightforward to me. It'll break path MTU discovery.
I would hope someone applying for an IP expert position would know that.
Could HR be mangling the question
--
Cc: nanog@nanog.org nanog@nanog.org
Subject: Re: job screening question
Date: Thu, 5 Jul 2012 15:05:01 -0600
Isn't MTU discovery on IP and not TCP?
--
https://en.wikipedia.org/wiki/Path_MTU_discovery
scott
Two of Cisco's IPv6 sites, www-v6.cisco.com and www.ipv6.cisco.com, are in a
routing loop:
13 10gigabitethernet11-4.core1.sjc2.he.net (2001:470:0:1b4::1) 84.519 ms
82.710 ms 81.033 ms
14 10gigabitethernet3-2.core1.pao1.he.net (2001:470:0:32::2) 81.821 ms
81.826 ms 83.413 ms
15
As many of you probably know, the replacement nameservers operated on
behalf of the FBI for the Domain Changer Working Group (DCWG) are
scheduled to go down Sunday morning (GMT).
Yesterday, July 4th, was a holiday in the US, and as such the US based
activity hitting the DCWG nameservers was
A report for a day other than the 4th of July would be very helpful.
-Original Message-
From: Andrew Fried [mailto:andrew.fr...@gmail.com]
Sent: Thursday, July 05, 2012 5:26 PM
To: nanog@nanog.org
Subject: Domain changer statistics by ASN
As many of you probably know, the replacement
We have data going back to November 8, 2011. Generating a report of
over 2,000 ASNs, by day, would be too large an attachment for NANOG.
I'll produce a follow up report in less than 3 hours with data from July
5th. Would that help?
Andy
Andrew Fried
andrew.fr...@gmail.com
On 7/5/12 5:42 PM,
On Jul 5, 2012, at 5:21 PM, Frank Bulk wrote:
Two of Cisco's IPv6 sites, www-v6.cisco.com and www.ipv6.cisco.com, are in a
routing loop:
13 10gigabitethernet11-4.core1.sjc2.he.net (2001:470:0:1b4::1) 84.519 ms
82.710 ms 81.033 ms
14 10gigabitethernet3-2.core1.pao1.he.net
On Thu, Jul 5, 2012 at 5:05 PM, Derek Andrew derek.and...@usask.ca wrote:
You implement a firewall on which you block all ICMP packets. What
part of the TCP protocol (not IP in general, TCP specifically)
malfunctions as a result?
Isn't MTU discovery on IP and not TCP?
If you want to
July 2nd might be the most accurate. For our customers, July 3rd, 4th, and
today have been low volume days because of the holiday. I suspect the same is
true for many providers in the USA.
-Original Message-
From: Andrew Fried [mailto:andrew.fr...@gmail.com]
Sent: Thursday, July 05,
Yeah, I see the singular one for our AS. =) We've know it for some time, but
older lady is somewhat reluctant to spend money on getting someone to look at
it. I spoke to her today and she has two machines, one new, one old. She's
going to turn the old one off and hope that we won't see any
This type o question where the candidate can elaborate the answer
should be asked by a techinal interviewer.
For screening questions (for 1st level filtering), IMO, the questions
has to be straight to the point, for example:
1) What is the LSA number for an external route in OSPF?
This can have
--- diogo.montag...@gmail.com wrote:\
From: Diogo Montagner diogo.montag...@gmail.com
For screening questions (for 1st level filtering), IMO, the questions
has to be straight to the point, for example:
1) What is the LSA number for an external route in OSPF?
This can have two answer: 5 or 7.
Geez, I'd be happy to find someone with a good attitude, a solid work
ethic, and the desire and aptitude to learn. :)
Jason
On 7/5/2012 5:18 PM, William Herrin wrote:
On Thu, Jul 5, 2012 at 5:05 PM, Derek Andrew derek.and...@usask.ca wrote:
You implement a firewall on which you block all
Something tells me you're suddenly going to find yourself with an
influx of correct answers...
On Thu, Jul 5, 2012 at 3:18 PM, William Herrin b...@herrin.us wrote:
On Thu, Jul 5, 2012 at 5:05 PM, Derek Andrew derek.and...@usask.ca wrote:
You implement a firewall on which you block all ICMP
--- ja...@thebaughers.com wrote:
From: Jason Baugher ja...@thebaughers.com
Geez, I'd be happy to find someone with a good attitude, a solid work
ethic, and the desire and aptitude to learn. :)
---
Yeah, that. But how do you get those folks through the HR
He'll have to come up with another weedout question, like what's a /27?
I'm constantly amazed/disappointed when we interview candidates for a
senior Linux admin job and they just don't know modern networking at all.
Even better question, with multiple right answers, how many IPs are in a
/32?
I would use questions such as the following:
1. How many end-sites can be numbered from a single /32.
(Correct answers: IPv4 - 1, IPv6 - 65,536)
2. In what circumstance might you need to use IPSEC to secure OSPF
instead of MD5 authentication?
3. How
On Thu, Jul 5, 2012 at 8:22 PM, Owen DeLong o...@delong.com wrote:
I would use questions such as the following:
1. How many end-sites can be numbered from a single /32.
(Correct answers: IPv4 - 1, IPv6 - 65,536)
IPv6 - 16,777,216 to 268,435,456 :p
5. What is the
On Jul 5, 2012, at 5:32 PM, William Herrin b...@herrin.us wrote:
5. What is the reason for the 100m distance limit within an ethernet
collision domain?
What's an ethernet collision domain? Seriously, when was the last time
you dealt with a half duplex ethernet?
Last time I built
--- b...@herrin.us wrote:
From: William Herrin b...@herrin.us
5. What is the reason for the 100m distance limit within an ethernet
collision domain?
What's an ethernet collision domain? Seriously, when was the last time
you dealt with a half duplex ethernet?
apologies for top posting.
Everyone, including me have addressed what/how/by who wrt question at hand.
Bill-
Another poster has already asked this question-
Can you post a sample of the answers you have received; which prompted you
the ask this question to begin with.
./Randy
--- On Thu,
On Thu, Jul 5, 2012 at 7:01 PM, Randy randy_94...@yahoo.com wrote:
--- On Thu, 7/5/12, William Herrin b...@herrin.us wrote:
The less precise answer, path MTU discovery breaks, is just
fine.
Precisely! and if I understand correctly, a non-techinical person
within HR is expected to hear this
On Thu, 05 Jul 2012 15:05:01 -0600, Derek Andrew said:
Isn't MTU discovery on IP and not TCP?
AIX actually supported PMTUD for UDP. Not sure if it still does. Yes, it was
bizarro even for AIX. No, I'm not aware of any actual UDP applications that
were able to do anything useful with this
On Thu, 5 Jul 2012, William Herrin wrote:
On Thu, Jul 5, 2012 at 8:22 PM, Owen DeLong o...@delong.com wrote:
I would use questions such as the following:
1. How many end-sites can be numbered from a single /32.
(Correct answers: IPv4 - 1, IPv6 - 65,536)
IPv6 -
Can you post a sample of the answers you have received; which
prompted you the ask this question to begin with.
I've been asking the question in phone interviews for months. I
couldn't quote them properly but the answers were... discouraging. No
one beyond ping and traceroute.
I asked HR last
In a message written on Thu, Jul 05, 2012 at 08:32:46PM -0400, William Herrin
wrote:
What's an ethernet collision domain? Seriously, when was the last time
you dealt with a half duplex ethernet?
5 segments
4 repeaters
3 segments with transmitting hosts
2 transit segments
1 collision domain
If
On Thu, Jul 5, 2012 at 9:28 PM, Jon Lewis jle...@lewis.org wrote:
You've never (much less recently) seen a customer misconfigure their end of
an ethernet handoff such that you end up with duplex mismatch? Granted, in
that case, distance is irrelevant...but it is half half-duplex ethernet :)
If
I see.
Replace local access control with let anyone on the internet reconfigure the
thing. Whoever's idea it was should be p*ssed on, keelhauled, drawn and
quartered, then burned at the stake.
---
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/\ www.asciiribbon.org
-Original
On Thu, Jul 5, 2012 at 10:16 AM, David Coulson da...@davidcoulson.netwrote:
What if they said it would cause the generation of port-unreachable ICMP
packets to cease, and applications may hang until they timeout? Not the
answer you're looking for, but not wrong either.
Umm, yeah, it is
Maybe I was not too clear with my answer.
The main idea was to execute a first level of filtering to separate
the candidates that put information in their CV that does not match
with the basic requirements for the position.
For example:
- requirement: strong knowledge in routing protocols (list
Significantly faster and with far fewer bugs than the Cisco/Linksys as well.
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-Original Message-
From: David Hubbard [mailto:dhubb...@dino.hostasaurus.com]
Sent: Thursday, 05 July, 2012 10:56
To:
I see.
Replace local access control with let anyone on the internet reconfigure=
the thing. Whoever's idea it was should be p*ssed on, keelhauled, drawn =
and quartered, then burned at the stake.
It'll get real interesting when Cisco's cloud database is breached and
some weakness in
--- On Thu, 7/5/12, William Herrin b...@herrin.us wrote:
From: William Herrin b...@herrin.us
Subject: Re: job screening question
To: Jon Lewis jle...@lewis.org
Cc: nanog@nanog.org nanog@nanog.org
Date: Thursday, July 5, 2012, 6:43 PM
On Thu, Jul 5, 2012 at 9:28 PM, Jon
Lewis
On Thu, 05 Jul 2012 18:36:34 -0700, Leo Bicknell said:
If any employer thought that was useful knowledge for a job today I
would probably run away, as fast as possible!
Only way I'd take that job is with both budget and authority to
clean up the mess. However, those kind of things are usually
On Jul 5, 2012, at 5:50 PM, Scott Weeks wrote:
--- b...@herrin.us wrote:
From: William Herrin b...@herrin.us
5. What is the reason for the 100m distance limit within an ethernet
collision domain?
What's an ethernet collision domain? Seriously, when was the last time
you dealt
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