Re: DPDK and energy efficiency

2021-02-23 Thread William Herrin
ually pause anything but saves a little power by de-pipelining and, if hyperthreading is enabled, releasing the core to run the alternate thread. Regards, Bill Herrin -- William Herrin b...@herrin.us https://bill.herrin.us/

Re: DPDK and energy efficiency

2021-02-23 Thread William Herrin
rate environments where no gains are likely to be realized by avoiding a busy-wait loop. Regards, Bill Herrin -- William Herrin b...@herrin.us https://bill.herrin.us/

Re: AWS contact?

2021-02-20 Thread William Herrin
d anycast TCP where packet #2 arrived at a different server than packet #1. -Bill -- William Herrin b...@herrin.us https://bill.herrin.us/

Re: dumb question: are any of the RIR's out of IPv4 addresses?

2021-02-16 Thread William Herrin
t; Mike > > > > Sent from my iPad > > > >> On Feb 16, 2021, at 3:07 PM, Michael Thomas wrote: > >> > >>  > >> Basically are there places that you can't get allocations? If so, > >> what is happening? > >> > >> Mike > >> -- William Herrin b...@herrin.us https://bill.herrin.us/

Re: dumb question: are any of the RIR's out of IPv4 addresses?

2021-02-16 Thread William Herrin
specified transfer at the RIR which transfers those addresses to you. Regards, Bill Herrin -- William Herrin b...@herrin.us https://bill.herrin.us/

Re: Texas internet connectivity declining due to blackouts

2021-02-16 Thread William Herrin
power plants need water to stay online. Yet those water facilities froze in the cold temperatures" https://www.cnn.com/2021/02/16/business/texas-power-energy-nightmare/index.html Regards, Bill Herrin -- William Herrin b...@herrin.us <https://bill.herrin.us/> https://bill.herrin.us/

Re: DoD IP Space

2021-02-15 Thread William Herrin
On Mon, Feb 15, 2021 at 7:49 AM Valdis Klētnieks wrote: > On Sun, 14 Feb 2021 22:25:56 -0800, William Herrin said: > > This particular problem could be quickly resolved if the OSes still > > getting updates were updated to default name resolution to prioritize > > the I

Re: DoD IP Space

2021-02-15 Thread William Herrin
o each application individually. Getaddrinfo() is core standard. Fix the problem in the place that fixes it in every place or else it's never really fixed. Regards, Bill Herrin -- William Herrin b...@herrin.us https://bill.herrin.us/

Re: DoD IP Space

2021-02-14 Thread William Herrin
fixed. Prioritizing IPv6 over IPv4 for newly initiated connections is one of the trifecta of critical design errors that have been killing IPv6 for two decades. One of the two that if key folks weren't being so bull-headed about it, it would be trivial to fix. Regards, Bill Herrin -- William Herrin b...@her

Re: DoD IP Space

2021-02-11 Thread William Herrin
On Thu, Feb 11, 2021 at 5:52 PM Izaac wrote: > On Thu, Feb 11, 2021 at 09:53:56AM -0800, William Herrin wrote: > > In other words, it proves the exact opposite of your assertion. > > Golly. Do you want to tell the 1M+ AWS customers that the services they > paid ~$280B for la

Re: DoD IP Space

2021-02-11 Thread William Herrin
On Thu, Feb 11, 2021 at 6:13 AM Izaac wrote: > On Wed, Feb 10, 2021 at 10:38:00AM -0800, William Herrin wrote: > > None whatsoever. You just have to be really big. > > Hi Beel, That was unnecessary. Sorry I used an S instead of a Z. > Thanks for backing me up with an example

Re: DoD IP Space

2021-02-10 Thread William Herrin
in that VPC. Regards, Bill Herrin -- William Herrin b...@herrin.us https://bill.herrin.us/

Re: Half Fibre Pair

2021-01-26 Thread William Herrin
On Tue, Jan 26, 2021 at 12:52 PM Rod Beck wrote: > Can someone explain to me what is a half fibre pair? I took it > literally to mean a single fibre strand but someone insisted it > was a large quantity of spectrum. Please illuminate. Maybe it's like half a pair of glasses, the perfect

Re: gofundme Medical Expenses - Ed Hew

2021-01-25 Thread William Herrin
On Mon, Jan 25, 2021 at 10:08 AM Jim Mercer wrote: > On Mon, Jan 25, 2021 at 09:23:11AM -0800, William Herrin wrote: > > On Mon, Jan 25, 2021 at 8:40 AM Jim Mercer wrote: > > > unsure if this is allowed or not, but, here goes. > > > > This is a lie. > > t

Re: gofundme Medical Expenses - Ed Hew

2021-01-25 Thread William Herrin
On Mon, Jan 25, 2021 at 8:40 AM Jim Mercer wrote: > unsure if this is allowed or not, but, here goes. Hi Jim, This is a lie. If you weren't sure, you'd have asked if it was ok to do the thing without actually doing the thing. That you went ahead and did it says you were pretty sure it was

Re: USENET peers?!

2021-01-20 Thread William Herrin
On Wed, Jan 20, 2021 at 12:40 PM wrote: > 2. Usenet is dead and besides a full feed is 20+TB/day because it's > dead, but 20TB/day... Hi Barry, How much is it per day if you skip the groups distributing finger-quote "linux isos"? Regards, Bill Herrin

Re: Hosting recommendations ... ?

2021-01-19 Thread William Herrin
On Tue, Jan 19, 2021 at 9:18 AM Bryan Holloway wrote: > Perhaps I'm missing something, but in your #1 example "Cloud", what > prevents me from running a Proxmox ISO (which is more or less Debian) > vs. a "standard" Debian install on the provider's virtual server? Hi Bryan, I haven't used

Re: Hosting recommendations ... ?

2021-01-19 Thread William Herrin
On Tue, Jan 19, 2021 at 8:31 AM Bryan Holloway wrote: > I would like to stop personally dealing with bare-metal. That's what I'm > doing now. Hi Bryan, Cloud = you get virtual servers with virtual storage, generally adjustable to meet your needs. You manage the operating systems and storage

Re: Hosting recommendations ... ?

2021-01-19 Thread William Herrin
zed data center in any state would work for the > US. > > Josh Luthman > 24/7 Help Desk: 937-552-2340 > Direct: 937-552-2343 > 1100 Wayne St > Suite 1337 > Troy, OH 45373 > > > On Tue, Jan 19, 2021 at 11:14 AM William Herrin wrote: >> >> On Tue, J

Re: Hosting recommendations ... ?

2021-01-19 Thread William Herrin
On Tue, Jan 19, 2021 at 7:45 AM Bryan Holloway wrote: > Looking for a reputable (i.e., no hosting of spammers or other > ne'er-do-wells) hosting provider with possibly a global footprint. If > not, US is #1 desire; EU #2. > > * Desire to host 2-3 hypervisors, probably running something akin to >

Re: Issues with NANOG mailing list operations and subscriptions

2021-01-17 Thread William Herrin
On Sun, Jan 17, 2021 at 1:37 PM Sean Donelan wrote: > Some people think its funny to ghost subscribe email addresses, and > the NANOG mailing list auomation doesn't catch them in the verification > process. Hi Sean, How is that possible? This is exactly what a correctly implemented confirmed

Re: Parler

2021-01-17 Thread William Herrin
On Wed, Jan 13, 2021 at 3:41 PM Matt Corallo wrote: > $ dig parler.com ns > parler.com. 300 IN NS ns4.epik.com. > parler.com. 300 IN NS ns3.epik.com. Looks like Parler managed to bring up a placeholder web site via a Belize (LACNIC) registered

Re: Re Parler

2021-01-14 Thread William Herrin
On Thu, Jan 14, 2021 at 10:13 AM wrote: > (b) Termination for Cause. > (i) material breach remains uncured for a period of 30 days from receipt of > notice It's fairly clear from Amazon's communications that this is their basis for terminating Parler. They began notifying Parler in September

Re: Parler

2021-01-14 Thread William Herrin
On Thu, Jan 14, 2021 at 8:47 AM Matt Erculiani wrote: > Is there a remote possibility here that Verisign might say "yeah, we're gonna > glue this domain down to 0.0.0.0 and not allow registration"? Absent a court order? No, not a chance. Verisign is not parler's registrar. They'd be inviting

Re: Parler

2021-01-13 Thread William Herrin
On Wed, Jan 13, 2021 at 9:22 PM Matt Corallo wrote: > Sure, I just found it marginally comical that amazon, after making a big > stink about kicking them off, is still providing them service, even if it’s > one-hop indirect. That said, someone else suggested that Epik is denying that > they

Re: Parler

2021-01-13 Thread William Herrin
On Wed, Jan 13, 2021 at 9:02 PM Valdis Klētnieks wrote: > On Wed, 13 Jan 2021 18:41:55 -0500, Matt Corallo said: > > parler.com. 300 IN NS ns4.epik.com. > > parler.com. 300 IN NS ns3.epik.com. > > ... > > ns3.epik.com. 108450 IN A

Re: End-user Alert Delivery (was Re: NDAA passed: Internet and Online Streaming Services Emergency Alert Study)

2021-01-13 Thread William Herrin
On Wed, Jan 13, 2021 at 7:58 PM Jay R. Ashworth wrote: > Last time I looked, consumer residential smoke detectors were still running > off 9V alkaline batteries, which are expected to run the device for 6 months > of 1/99 duty cycle (or less, probably *way* less). Ordinary ionization-based smoke

Re: DMVPN via Internet or Private APN

2021-01-12 Thread William Herrin
On Tue, Jan 12, 2021 at 8:55 AM Sean Kelly wrote: > The real debate arrives when it's time to choose a carrier to host the > router. I choose to go with a major cell carrier using a "private" > APN. It allows me to connect my cell routers to a private layer 2 > network and my private IP addresses

Re: Parler

2021-01-11 Thread William Herrin
On Mon, Jan 11, 2021 at 8:46 PM Matthew Petach wrote: > ...unless the higher calling of "religious freedom" is at stake, > in which case, sure, it's OK to exclude entire classes of people, > if serving them would go against your religious beliefs. > precedent set by > Masterpiece Cakeshop v.

Re: more bad lawyering about Parler

2021-01-11 Thread William Herrin
On Mon, Jan 11, 2021 at 2:51 AM Joe Greco wrote: > Are there examples that do not conflate other areas of the law? Hi Joe, I expect so. Maynard v. Snapchat, for example, in which the court found that snapchat had no section 230 immunity in a lawsuit related to its speed overlay feature for

Re: more bad lawyering about Parler

2021-01-11 Thread William Herrin
On Mon, Jan 11, 2021 at 2:19 AM Danny O'Brien wrote: > On Sun, Jan 10, 2021 at 8:54 PM William Herrin wrote: >> there have been some real post-CDA head scratchers where >> a court decided that an online service exercised sufficient control of >> the content to have ma

Re: Parler

2021-01-10 Thread William Herrin
On Sun, Jan 10, 2021 at 8:32 PM wrote: > > On Jan 10, 2021, at 1:45 PM, Michael Thomas wrote: > >> On 1/10/21 10:21 AM, William Herrin wrote: > >> Are you sure about that? Consider your database. Suppose you want to > >> run your primary database in AW

Re: more bad lawyering about Parler

2021-01-10 Thread William Herrin
On Sun, Jan 10, 2021 at 8:13 PM John Levine wrote: > > In article > you > write: > >With private organizations it gets much more complicated. No > >organization is compelled to publish anything. But then section 230 of > >the DMCA comes in and says: if you exercise editorial control over >

Re: Parler

2021-01-10 Thread William Herrin
On Sun, Jan 10, 2021 at 6:58 PM Matthew Petach wrote: > Private businesses can engage in prior restraint all they want. Hi Matt, You've conflated a couple ideas here. Public accommodation laws were passed in the wake of Jim Crow to the effect that any business which provides services to the

Re: Parler

2021-01-10 Thread William Herrin
On Sun, Jan 10, 2021 at 7:05 AM wrote: > Another interesting angle here is that it as ruled President couldn’t > block people, because his Tweets were government communication. > So has Twitter now blocked government communication? Howdy, The President is a government official. Government

Re: Parler

2021-01-10 Thread William Herrin
On Sun, Jan 10, 2021 at 9:55 AM Töma Gavrichenkov wrote: > I'd say it starts to be "inconvenient approaching impossible" only at > the point where you begin to use Cloudformation — or when you don't > have automated deployment at all. While the provisioning tools are > provider agnostic, a move

Re: Parler

2021-01-10 Thread William Herrin
On Sun, Jan 10, 2021 at 5:43 AM Mike Bolitho wrote: > Can we please not go down this rabbit hole on here? List admins? Hi Mike, While there's certainly an opportunity to get political, there are some obviously apolitical issues worth discussing here as well. First, this would appear to be an

Parler

2021-01-10 Thread William Herrin
Anybody looking for a new customer opportunity? It seems Parler is in search of a new service provider. Vendors need only provide all the proprietary AWS APIs that Parler depends upon to function. https://www.washingtonpost.com/technology/2021/01/09/amazon-parler-suspension/ Regards, Bill HErrin

Re: nike.com->nike.com/ca

2021-01-06 Thread William Herrin
On Wed, Jan 6, 2021 at 2:32 PM Kain, Becki (.) wrote: > Yet I could goto the site, via Ford's network (h, shopping at home) and > I'm in the same city as Ford. Hi Becki, A couple basic things you could try: plug your public IP address into Whois and see what comes back. Plug it into the

Re: nike.com->nike.com/ca

2021-01-06 Thread William Herrin
On Wed, Jan 6, 2021 at 2:00 PM Christopher Morrow wrote: > quite possible' :) (you don't normally, but I think the HTTP thing is > the 'gotcha') Yeah, it got me. I realized it shortly after sending the email. > (also, typical geo ip problems :( bummer!) Yeah, likely still qualifies as Using

Re: nike.com->nike.com/ca

2021-01-06 Thread William Herrin
On Wed, Jan 6, 2021 at 1:48 PM William Herrin wrote: > On Wed, Jan 6, 2021 at 1:42 PM Kain, Becki (.) wrote: > > At home, using 8.8.8.8, if I goto www.nike.com, I get rerouted to > > nike.com/ca. I cleared the dns cache (I’m running Catalina macos) and > > rebooted just

Re: nike.com->nike.com/ca

2021-01-06 Thread William Herrin
On Wed, Jan 6, 2021 at 1:42 PM Kain, Becki (.) wrote: > At home, using 8.8.8.8, if I goto www.nike.com, I get rerouted to > nike.com/ca. I cleared the dns cache (I’m running Catalina macos) and > rebooted just because. Anyone else seen a weirdism on this? thanks Welcome to Why You Shouldn't

Re: [EXTERNAL]Need someone with clue @ Network Solutions.

2020-12-15 Thread William Herrin
On Tue, Dec 15, 2020 at 9:41 AM Matthew Crocker wrote: > It appears I should have been looking for clue in my own network. Amazon > hosts crocker.com and they have the glue records. Apparently left over from > when the domain was with Network Solutions. I have tickets open with Amazon > to

Re: Weather Service faces Internet bandwidth shortage, proposes limiting key data

2020-12-10 Thread William Herrin
On Thu, Dec 10, 2020 at 12:14 AM Rich Kulawiec wrote: > > Weather Service faces Internet bandwidth shortage, proposes limiting key > > data > > The National Weather Service is proposing to place limits on accessing its > > life-saving weather data in a bid to fix Internet outages. > > By Jason

Re: A letter from the CEO

2020-11-22 Thread William Herrin
On Sun, Nov 22, 2020 at 10:37 PM Carsten Bormann wrote: > On 2020-11-20, at 23:18, 6x7 Networks - Lady Benjamin, CEO > wrote: > > 8tbps (8 terrabits per second). > I don’t expect the majority of nanog people to know the intended data rate > would properly be notated as 8 Tbit/s, but a space

Re: AFRINIC IP Block Thefts -- The Saga Continues

2020-11-16 Thread William Herrin
gt; the same coin, I was gladly interested in the past to share all the > information (including AfriNIC legal proceedings) with a person respected by > the Nanog community (and I'm still interested to do so today), such as > William Herrin, or to anyone else respected by the Nanog com

Re: Technology risk without safeguards

2020-11-06 Thread William Herrin
On Fri, Nov 6, 2020 at 12:00 PM Rich Kulawiec wrote: > p.s.2: The large quantities of power conduits, cables, shelving, racks, > HVAC ductwork, etc. that are typical of datacenters constitute a haphazard > but modestly effective EM shield, as measured on an ad hoc basis by anyone > who tries to

Re: Technology risk without safeguards

2020-11-05 Thread William Herrin
On Thu, Nov 5, 2020 at 5:59 AM Tom Beecher wrote: > Let's say roughly half of the science says the hypothesis is false, and half > says it is true. It is absolutely fair in this case to state "We don't know > enough." Hi Tom, Strictly speaking, if a hypothesis is disproven by even one

Re: Technology risk without safeguards

2020-11-04 Thread William Herrin
On Wed, Nov 4, 2020 at 11:37 AM Suresh Kalkunte wrote: > Your comments gives me an overall impression that data center equipment are > on average adequately protected, that is good. Also, public discussion on the > risk of intentional EMI is a big positive. I watched a T.V. program a few years

Re: Technology risk without safeguards

2020-11-04 Thread William Herrin
On Wed, Nov 4, 2020 at 8:49 AM Suresh Kalkunte wrote: > I believe the below described method of causing intentional (1) damage to > equipment in data centers and (2) physical injury to a person at the > workplace is on-topic for the NANOG community, if not, I look forward to your > feedback.

Re: att or sonic "residential" fiber service at a "nontraditional" residence.

2020-11-01 Thread William Herrin
On Sun, Nov 1, 2020 at 5:22 PM Mark Seiden wrote: > if i don’t want an SLA, does anything keep a non-profit organization from > ordering (from att or sonic) residential service at what normally would be > considered a business location? Hi Mark, Generally speaking, the residential and

Re: Asus wifi AP re-writing DNS packets

2020-10-28 Thread William Herrin
On Wed, Oct 28, 2020 at 1:57 PM Anurag Bhatia wrote: > No such feature when running in AP mode. AP mode gives options of wireless > settings (SSID etc) and IP for management of the device. I don't know about this case but I've occasionally noticed devices where you have to put the device into

Re: FCC FUSF charges clarification

2020-10-14 Thread William Herrin
those > taxes to the carrier ? Anywhere you have a physical presence you owe taxes. The correct question is: which ones? Regards, Bill Herrin -- William Herrin b...@herrin.us https://bill.herrin.us/

Re: Gaming Consoles and IPv4

2020-09-27 Thread William Herrin
'll happily sell you for an extra $5/month. You have three Z-Consoles? At the same time? We gotcha covered!" Regards, Bill Herrin -- William Herrin b...@herrin.us https://bill.herrin.us/

Re: cloud automation BGP

2020-09-27 Thread William Herrin
that measures things like packet loss rates and cuts the primary if they get higher than acceptable, but that wouldn't be a cloud service because the cloud wouldn't be reliably reachable when you need to act on that information. Regards, Bill Herrin -- William Herrin b...@herrin.us https://bill.herrin.us/

Re: curious spam...

2020-09-15 Thread William Herrin
my gmail box without going to another address at my mail server first is spam. Regards, Bill Herrin -- William Herrin b...@herrin.us https://bill.herrin.us/

curious spam...

2020-09-14 Thread William Herrin
ongressman. And not any of the addresses I give out; my gmail box's address which I don't. Anyone else have a similar experience? Any idea how a hidden address is making it on to relevant congressmens' lists but not any others? That's weird right? Regards, Bill Herrin -- William Herrin b...@herri

Re: Wildfires: Reminder smart devices don't include emergency warnings while streaming

2020-09-11 Thread William Herrin
ll Herrin -- William Herrin b...@herrin.us https://bill.herrin.us/

Re: TCP and UDP Port 0 - Should an ISP or ITP Block it?

2020-08-25 Thread William Herrin
rds, Bill Herrin -- William Herrin b...@herrin.us https://bill.herrin.us/

Re: Fiber Automatic Transfer Switch

2020-08-17 Thread William Herrin
t doesn't restore. Keep your layer-1's active all the time and do fault handling at a higher layer. Regards, Bill Herrin -- William Herrin b...@herrin.us https://bill.herrin.us/

Re: Bottlenecks and link upgrades

2020-08-13 Thread William Herrin
ng two paths to three. It has priority at a lower level of consumption. Regards, Bill Herrin -- William Herrin b...@herrin.us https://bill.herrin.us/

cloudflare 1.1.1.2 filtered DNS

2020-08-11 Thread William Herrin
anks, Bill Herrin -- William Herrin b...@herrin.us https://bill.herrin.us/

Re: questions asked during network engineer interview

2020-07-24 Thread William Herrin
On Fri, Jul 24, 2020 at 12:44 AM Mark Tinka wrote: > On 24/Jul/20 09:32, William Herrin wrote: > > Choosing not to mash one's fingers with a hammer is not an absence of > > curiosity about carpentry. It's merely an understanding that doing > > carpentry well involves -not-

Re: questions asked during network engineer interview

2020-07-24 Thread William Herrin
t. Choosing not to mash one's fingers with a hammer is not an absence of curiosity about carpentry. It's merely an understanding that doing carpentry well involves -not- mashing one's fingers with a hammer. Regards, Bill Herrin -- William Herrin b...@herrin.us https://bill.herrin.us/

Re: questions asked during network engineer interview

2020-07-23 Thread William Herrin
ng a career of competing to be the first to write poorly considered software. The booby prize for failing the interview was a Google coffee mug. I still have it in storage somewhere. Regards, Bill Herrin -- William Herrin b...@herrin.us https://bill.herrin.us/

Re: questions asked during network engineer interview

2020-07-22 Thread William Herrin
ndardized with a ton of other operators, that's fine too. Hi Mark, Who said anything about boxing your tooling in to SDN tech? You described Software Defined Networking as a rabbit hole and snake oil. It isn't. It's a class of tools in the networking toolbox and an increasingly useful one. Regar

Re: questions asked during network engineer interview

2020-07-22 Thread William Herrin
y hold. Regards, Bill Herrin -- William Herrin b...@herrin.us https://bill.herrin.us/

Re: questions asked during network engineer interview

2020-07-21 Thread William Herrin
you. Regards, Bill Herrin -- William Herrin b...@herrin.us https://bill.herrin.us/

Re: questions asked during network engineer interview

2020-07-21 Thread William Herrin
odity OS and custom packet handling (DPDK) that skips the OS. This is happening a lot in the big shops like Amazon that can afford to employ software developers to write purpose-built network code. Regards, Bill Herrin -- William Herrin b...@herrin.us https://bill.herrin.us/

Re: questions asked during network engineer interview

2020-07-20 Thread William Herrin
those that didn't make it, did. I find there's a strong INVERSE correlation between the quantity of certificates on an applicant's resume and their ability to do the job. I still have to laugh about the guy who let me know via his resume that he was certified in setting up Kentrox CSU/DSUs. -Bill

Re: questions asked during network engineer interview

2020-07-14 Thread William Herrin
On Tue, Jul 14, 2020 at 1:26 PM wrote: > > William Herrin > > Sent: Tuesday, July 14, 2020 8:32 PM > > > > On Tue, Jul 14, 2020 at 12:17 PM Michael Thomas wrote: > > > On 7/14/20 12:09 PM, William Herrin wrote: > > > > On Mon, Jul 13, 2020 at 3

Re: questions asked during network engineer interview

2020-07-14 Thread William Herrin
would do differently). It's open ended and bias-neutral. Which is a big deal. Regards, Bill Herrin -- William Herrin b...@herrin.us https://bill.herrin.us/

Re: questions asked during network engineer interview

2020-07-14 Thread William Herrin
cause he wanted me to find. The command should have hung accessing a faulty NFS mount but in his version of the story it didn't. Regards, Bill Herrin -- William Herrin b...@herrin.us https://bill.herrin.us/

Re: questions asked during network engineer interview

2020-07-14 Thread William Herrin
On Tue, Jul 14, 2020 at 12:17 PM Michael Thomas wrote: > On 7/14/20 12:09 PM, William Herrin wrote: > > On Mon, Jul 13, 2020 at 3:12 PM Mehmet Akcin wrote: > >> I am hosting a live show a few times a month about internet infrastructure > >> and today's topics were, yo

Re: questions asked during network engineer interview

2020-07-14 Thread William Herrin
er. It's an oral question, you don't have to write or draw anything to answer, so you can use it in a phone screen. Regards, Bill Herrin -- William Herrin b...@herrin.us https://bill.herrin.us/

Re: netflix proxy/unblocker false detection

2020-06-26 Thread William Herrin
u are right this instant. Because they are unreasonable luddites who think that geographic monopolies make good business sense. Regards, Bill Herrin -- William Herrin b...@herrin.us https://bill.herrin.us/

Re: Is there any data on packet duplication?

2020-06-23 Thread William Herrin
On Mon, Jun 22, 2020 at 10:21 PM Saku Ytti wrote: > On Tue, 23 Jun 2020 at 08:12, William Herrin wrote: > > That's what spanning tree and its compatriots are for. Otherwise, > > ordinary broadcast traffic (like those arp packets) would travel in a > > loop, flooding the netw

Re: Is there any data on packet duplication?

2020-06-22 Thread William Herrin
urst work during initial sync up? Regards, Bill Herrin -- William Herrin b...@herrin.us https://bill.herrin.us/

60 ms cross-continent

2020-06-20 Thread William Herrin
-90 2742/186282 ~= 0.015 seconds Thanks, Bill Herrin -- William Herrin b...@herrin.us https://bill.herrin.us/

Re: Google captcha issue

2020-06-19 Thread William Herrin
ally to test connectivity. In practice, there's a device inline with your traffic flow that injects TCP connections and captures the associated return packets across your entire address space. Including, for example, your routers' IP addresses. Do you, or perhaps your upstream have such a

Re: Network card with relay in case of power failure

2020-06-18 Thread William Herrin
h your potentially malfunctioning device. This has the benefit of not having to care about whether the nature of the failure will affirmatively trigger the bypass since it'd negatively triggered on the absence of packets. Regards, Bill Herrin -- William Herrin b...@herrin.us https://bill.herrin.us/

Re: Partial vs Full tables

2020-06-11 Thread William Herrin
se urpf fails when you responded that no, it doesn't break anything. If you'd said, "no, that breakage is a small price worth paying," I'd have debated the merits with you or simply let it stand as a contrary opinion. Refusing to acknowledge the breakage is worth only dismissal. Regards,

Re: Partial vs Full tables

2020-06-11 Thread William Herrin
Hi Brad, Don't the ACLs generally live in a partition of the TCAM too? So you're going from two constant-time TCAM lookups per packet (route, acls) to three (route, urpf, acls)? Not rhetorical; getting close to the edge of my knowledge here. Regards, Bill Herrin -- William Herrin b...@herrin

Re: Partial vs Full tables

2020-06-11 Thread William Herrin
On Thu, Jun 11, 2020 at 6:25 AM Brian Johnson wrote: > I fully understand that I have not “broken” anything. Handwaving, la la la, only sunshine in the sky. Got it. -Bill -- William Herrin b...@herrin.us https://bill.herrin.us/

Re: Partial vs Full tables

2020-06-10 Thread William Herrin
oute responses are examples: a router telling a host information but expecting no response. SNMP traps are simplex though it's not obvious to me how that would matter here. What else can you think of that's simplex? Regards, Bill Herrin -- William Herrin b...@herrin.us https://bill.herrin.us/

Re: Partial vs Full tables

2020-06-10 Thread William Herrin
you drop that packet, path MTU discovery fails and everything beyond that router is unreachable with TCP. So you might want to consider whether any of these corner cases is activated by the way you use loose mode RPF. Regards, Bill Herrin -- William Herrin b...@herrin.us https://bill.herrin.us/

Re: Partial vs Full tables

2020-06-10 Thread William Herrin
On Wed, Jun 10, 2020 at 9:43 AM William Herrin wrote: > The answer is "no," you're not running reverse-path filtering on a BGP > speaker, not even in loose mode, because that's STUPID. Sorry, it'd be pre-coffee if I drank coffee and I was overly harsh here. Let me back up:

Re: Partial vs Full tables

2020-06-10 Thread William Herrin
large. I suppose the customers don't really need pmtud or traceroute... Regards, Bill Herrin -- William Herrin b...@herrin.us https://bill.herrin.us/

Re: Partial vs Full tables

2020-06-08 Thread William Herrin
y and CPU. Log-nish traversal down to the most specific route. What you expect from a tree. Or have I missed one? Regards, Bill Herrin -- William Herrin b...@herrin.us https://bill.herrin.us/

Re: Partial vs Full tables

2020-06-08 Thread William Herrin
On Mon, Jun 8, 2020 at 11:14 AM Nick Hilliard wrote: > William Herrin wrote on 08/06/2020 18:53: > > 4 gigs and 2 cores is more than sufficient for a 1 gbps router at > > the current 800k routes > 1gbps is residential access speed. Is this still useful in the dfz? Not really

Re: Partial vs Full tables

2020-06-08 Thread William Herrin
gards, Bill Herrin -- William Herrin b...@herrin.us https://bill.herrin.us/

Re: understanding IPv6

2020-06-07 Thread William Herrin
an expect some organizations to use it. This is especially true early in their adoption of IPv6 when they don't understand it as well as IPv4. Many will want to keep their security posture as closely aligned with IPv4 as possible. Regards, Bill Herrin -- William Herrin b...@herrin.us https://bill.herrin.us/

Re: Partial vs Full tables

2020-06-05 Thread William Herrin
On Fri, Jun 5, 2020 at 6:08 PM Yang Yu wrote: > On Fri, Jun 5, 2020 at 10:39 AM William Herrin wrote: > > Speak of which, did anyone ever implement FIB compression? I seem to > > remember the calculations looked really favorable for the leaf node > > use case (like James')

Re: Partial vs Full tables

2020-06-05 Thread William Herrin
ory. The RIB sits in the cheap part of the hardware. Regards, Bill Herrin -- William Herrin b...@herrin.us https://bill.herrin.us/

Re: Partial vs Full tables

2020-06-05 Thread William Herrin
tune an effective solution here, but there has to be an awful lot of money at stake before the manpower is cheaper than just buying a better router. Regards, Bill Herrin -- William Herrin b...@herrin.us https://bill.herrin.us/

Re: Partial vs Full tables

2020-06-05 Thread William Herrin
gh* cogent *cough*). So that's a risk you should plan for. Regards, Bill Herrin -- William Herrin b...@herrin.us <https://bill.herrin.us/> https://bill.herrin.us/

Re: [Email reenviado] - [GTER] Proposal of enhancement on the RIRs/NRO delegation File format/info

2020-06-02 Thread William Herrin
481, 10895, 10983, 11356, 12264, 21590, 26608, 27871. > B.2.a > "Núcleo de Inf. E Coord. Do Ponto BR - NIC.BR" with 16 ASNs > 10906, 11284, 11431, 11644, 11752, 12136, 13874, 14026, 14650, 20121, > 22548, 26162, 263044, 28345, 53035, 61580. > B.2.b > "LACNIC - Latin American and Caribbean IP address" with 7 ASNs. > 28000, 28001, 28002, 28119, 52224, 264845, 264846 > > > > [2] https://www.nro.net/wp-content/uploads/nro-extended-stats-readme5.txt > [3] ftp://ftp.lacnic.net/pub/stats/lacnic/delegated-lacnic-extended-latest > > -- > Douglas Fernando Fischer > Engº de Controle e Automação > -- > gter listhttps://eng.registro.br/mailman/listinfo/gter -- William Herrin b...@herrin.us https://bill.herrin.us/

Re: AS hijacking (Philosophy, rants, GeoMind)

2020-05-30 Thread William Herrin
doesn't have to list just one AS as the origin; he can' list an entire chain. Regards, Bill Herrin -- William Herrin b...@herrin.us https://bill.herrin.us/

Re: Friday Reminder: Web Site Security

2020-05-15 Thread William Herrin
SH keys that lack passphrases - if they pwn a system > and > find one, they go surfing it as far as they can. You may have missed the schadenfreude in Ronald's post. Give it a rest Ronald. You won. Regards, Bill Herrin -- William Herrin b...@herrin.us https://bill.herrin.us/

Re: Don't email clients have a kill file?

2020-05-14 Thread William Herrin
ompletely isolate yourself from being aware of contrary opinion. That lets nasty surprises sneak up on you. Regards, Bill Herrin -- William Herrin b...@herrin.us https://bill.herrin.us/

  1   2   3   4   5   6   7   8   9   10   >