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Re: favorite network troubleshooting tools (online)
by Scott Weeks 16 Jul '20

16 Jul '20

>> what are your favorite network troubleshooting tools? I thought I'd add a little data to my first response: To watch the network in real time with syslog, which puts messages in /var/log/router.log: tail -f /var/log/router.log | egrep -vi 'terms|I|do|not|want|to|see|SyncConfigOK|SaveConfigSucceeded|LogFile|etcetera|etcetera' To look for a problems on router1: grep -i router1 /var/log/router.log | egrep -vi 'terms|I|do|not|want|to|see' | less scott ps. it's free. no cost. low learning curve. easy and fast.

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Tell ARIN how to do a better job! (was: Fwd: [arin-announce] 2020 ARIN Customer Satisfaction Survey Now Open)
by John Curran 16 Jul '20

16 Jul '20

NANOGers - We survey the ARIN user community regularly to find out how we are doing and how we can do a better job. If you use ARIN services, I’d ask that you take a moment to complete our 2020 Customer Satisfaction Survey per the instructions below. Thanks (and stay safe!) /John John Curran President and CEO American Registry for Internet Numbers Begin forwarded message: From: ARIN <info(a)arin.net<mailto:info@arin.net>> Subject: [arin-announce] 2020 ARIN Customer Satisfaction Survey Now Open Date: 13 July 2020 at 9:39:17 AM EDT To: <arin-announce(a)arin.net<mailto:arin-announce@arin.net>> ARIN has officially launched our third Customer Satisfaction Survey to determine the current level of customer satisfaction with ARIN services. The survey is open beginning today, 13 July, through 31 July. The survey is available at: https://www.arin.net/customersurvey Working together with marketing research firm Rockbridge Associates (https://rockresearch.com/) we have developed this survey to help us assess our performance in all areas of the organization, including Technical Services, Registration and Financial Services, Policy Development, and Communications. Survey objectives include: - Determine members’ expectations and needs from ARIN - Assess current satisfaction with ARIN’s services and operations - Determine any unmet needs members have - Identify and prioritize areas for improvement - Assess current perceptions of the organization within the Internet community - Identify opportunities to better engage the Internet community in terms of outreach, education and fostering participation - Understand how ARIN’s current performance compares to that indicated by the previous surveys completed in 2014 and 2017, which can be viewed on our website: https://www.arin.net/about/corporate/customer_survey/ The results of this survey will inform how ARIN moves forward when making future service improvements. This survey will also enhance the feedback collection we already conduct throughout the year using transaction surveys, the feedback button on the ARIN website, the ARIN Consultation and Suggestion Process, and other feedback mechanisms. We will randomly select 10 winners to receive a $250 Amazon gift card during the survey period. These winners will be selected and announced on a weekly basis. If you would like to be eligible to receive a gift card, please provide your name and an email address on the final page of the survey. This information will only be used for the purposes of randomly selecting and contacting survey prize winners. Your feedback is important to us, and we value your time to help ARIN improve our services for you. Regards, John Sweeting Chief Customer Officer American Registry for Internet Numbers (ARIN)

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CPE and bufferbloat
by Michael Thomas 15 Jul '20

15 Jul '20

Given the new stresses of teleworking on the infrastructure, have providers been getting more calls about "the internetz are slow"? And if so, can you attribute any of it to bufferbloat? Anecdotally, I once had to hunt down a problem where the network was slagged because a friend was downloading a big game and it took me like over an hour to figuring out what was going on. I got a new router and flashed openWRT and turned on the shaping and it went from really bad to pretty unnoticable. Most people are probably just going to contact the help desk. Of course anything in the upstream would have been even worse, which of course things like Zoom tickle heavily. Mike

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Re: favorite network troubleshooting tools (online)
by Scott Weeks 15 Jul '20

15 Jul '20

On 15/07/2020 10:37, Mehmet Akcin wrote: > what are your favorite network troubleshooting tools? ---------------------------------------------- syslog :) scott

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Re: questions asked during network engineer interview
by Scott Weeks 14 Jul '20

14 Jul '20

--- mpetach(a)netflight.com wrote: From: Matthew Petach <mpetach(a)netflight.com> On Tue, Jul 14, 2020, 11:00 Ahmed elBorno <amaged(a)gmail.com> wrote: > I had less than two years experience. > > The interviewer asked me: > [...] > 2) If we had a 1GB file that we need to transfer between America and > Europe, how much time do we need, knowing that we start with a TCP size of > X? > I *love* questions like that, because I can immediately respond back with "well, that depends; did your sysadmin configure rfc1323 extension support in your TCP stack? Is SACK enabled? What about window scaling? Does your OS do dynamic buffer tuning for TCP, or are the values locked in at start time?" ------------------------------------------------ I'm not so sure someone with only 2 years experience would know that. scott

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Looking for an admin at Solarwinds MSP/Mail Assure
by Mark Spring 14 Jul '20

14 Jul '20

Does anybody have a contact at Solarwinds MSP where I could troubleshoot some issues with receiving messages from their Mail Assure platform? We have several users/domains that cannot receive messages from them and I don't see any connections from their servers at the TCP level that I can troubleshoot. It seems like they are holding onto old records but the admins that hold the service contract have not been able to produce any kind of logs from their support. When they send a message they get 5.0.0 response, but the same thing happened when they typ-o'd the domain which tells me it's a bad lookup on their server. I'm happy to work with anybody at solarwinds MSP or anybody else that might be able to shed some light on this. My users are just having issues receiving the message from solarwinds customers but I'm happy to put any amount of my resources into getting this resolved. Mark Spring Information Systems Manager -- NKTelco 301 W. South St.New Knoxville, OH 45871 Phone: 1-888-NKTELCO Fax: 419-753-2950 This message and the file(s) attached are confidential and proprietary information of NKTelco for the sole use of the intended recipient. Any unauthorized review, distribution, disclosure, copying, use, or dissemination, either whole or in part, is strictly prohibited. Do not transmit these documents, in any form, to any third party without the expressed written permission of NKTelco.

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netflix and ipv6
by Bajpai, Vaibhav 14 Jul '20

14 Jul '20

Hi NANOG, We measured NETFLIX over v6 for the last couple of years. The paper describing this research is now online, thought to share: -- Vaibhav A Longitudinal View of Netflix: Content Delivery over IPv6 and Content Cache Deployments paper: https://bit.ly/2toOGWP slides: https://bit.ly/2ZoEpap video: https://vimeo.com/437111302 ------------------------------ Vaibhav Bajpai, www.vaibhavbajpai.com

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Tool to build RPSL objects and push it to IRR
by Douglas Fischer 14 Jul '20

14 Jul '20

TL;DR. There are several tools[1] to automate the creation of Prefix Filtering on Internet Routing. I want the opposite! A tool to help-me to create/alter/delete IRR Objects based on the information of my Cone. Sad history ----------- For a long time, I'm creating some auxiliary scripts to do the repetitive job to our team. I'm not a good dev! I even wouldn't say that I'm a dev.(I'm studying to improve) One of these jobs is to create and maintain the IRR Objects related to our small ITP operation. So I created a horrible Frankenstein... Based o pure bash, with a lot of SED and AWK, that only I can understand. And even for me, takes at least a half-day of immersion to change anything and don't break what is working. (I'm pretty sure that this history is familiar to all of you...) And then... I am looking for a tool that can help to: - Based on some sort o information set (maybe YAML) - Check if the needed Objects already exists. - If not - Create the RPSL record. - Push it to IRR (via e-mail as RPSL defines, ou API specifically to RADB) Is there already a tool that does what I'm looking for? Complement: Objects like AS-SET and Route/Route6 are kind of simple to create! Aut-num, with all the (mp-)import/export syntax of routing policy, are mind-breaker to me. But, Aut-num is not on the first target... [1] BGPq3, BGPq4, IRRPowerTools, IRRToolset. -- Douglas Fernando Fischer Engº de Controle e Automação

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Anyone running C-Data OLTs?
by Owen DeLong 13 Jul '20

13 Jul '20

https://www.zdnet.com/article/backdoor-accounts-discovered-in-29-ftth-devic… <https://www.zdnet.com/article/backdoor-accounts-discovered-in-29-ftth-devic…> Wow… Just wow. Owen

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SaoPaolo to Frankfurt
by Max Tulyev 13 Jul '20

13 Jul '20

Hi All! Who can provide a VLAN from SaoPaolo to Frankfurt for remote IX.BR participation? Please contact me off-list. I see there is only one undersea cable going directly from Brazil to Europe. Why?

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