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Re: Telecommunications Outage Report: Northern California Firestorm 2017
by Scott Weeks 22 May '18

22 May '18

--- sean(a)donelan.com wrote: From: Sean Donelan <sean(a)donelan.com> :: During the 2017 wildfires, there were no forms of :: communications or technologies that worked better :: than the rest. I don't have time to read all 80+ pages and don't see it in the contents. Do you know what services restored first? scott

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earthlink email problems
by jimmy keffer 22 May '18

22 May '18

my has problems sending mail to earthlink.net the sever has a ptr abd reverse dns set but i get this To: jimmy(a)horsezipsworld.com Subject: Message undeliverable: MegaBBS Forum horsezip's world : New user alert From: mailer-daemon(a)horsezipsworld.com Date: Sun, 20 May 2018 23:40:41 -0400 Your message did not reach some or all of the intended recipients. Sent: Sun, 20 May 2018 23:40:40 -0400 Subject: MegaBBS Forum horsezip's world : New user alert The following recipient(s) could not be reached: horsezip(a)earthlink.net Error Type: SMTP Remote server (209.86.93.228) issued an error. hMailServer sent: MAIL FROM:<jimmy(a)horsezipsworld.com> Remote server replied: 550 ERROR: No or mismatched reverse DNS (PTR) entries for 23.227.197.10 hMailServer any one here who can help my server sends mail to servers fine gmail etc jimmy

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RE: Segment Routing
by Jakob Heitz (jheitz) 22 May '18

22 May '18

Nexus supports LDP. https://www.cisco.com/c/en/us/td/docs/switches/datacenter/sw/5_x/nx-os/mpls… Regards, Jakob

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is odd number of links in lag group ok
by Aaron Gould 22 May '18

22 May '18

I have (2) 10 gig links bundled in a lag to my upstream internet provider. and we need more internet capacity. Is it cool to add a third 10 gig to my existing 20 gig lag internet connection? I'm asking since I heard in the past something negative about odd numbers of lag members. .but I also have heard that it's not a big deal. Let me know please -Aaron

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Telecommunications Outage Report: Northern California Firestorm 2017
by Sean Donelan 22 May '18

22 May '18

A report on the telecommunications outages that affected Mendocino, Napa and Sonoma Counties in the wake of the devastating fires of 2017. http://www.mendocinobroadband.org/wp-content/uploads/1.-NBNCBC-Telecommunic… [...] Results show that in the 3-county area, 66% of residents lost landline services, 74% of residents lost cellular services, and 66% of residents lost Internet services with Napa County experiencing the most severe impacts. The 3-county average of service loss for these combined technologies is 71%. Many of these outages impacted residents that were geographically far from the actual burn areas. [...] During the 2017 wildfires, there were no forms of communications or technologies that worked better than the rest. Each method used for emergency notification played a crucial role in preparing residents for disaster. Technologies used by residents varied from many conventional methods to many non-conventional forms of communications. Regardless of the ways residents were notified, collectively the different methods played a major role in saving lives. [...] In the entire 2017 Northern California wildfires’ footprint, it is estimated that 160,000 wireline and 85,000 wireless customers lost service, including 11-15 Public Safety Answering points losing service. Over 340 cell sites were completely destroyed or damaged. [...] Internet outages affected (22) internet provider services over the 3-county region; however, not all (22) providers are available within each County. [...] When you evacuated your residence, how did you receive warning/notice to evacuate? did not receive any warning from anyone outside my own home (23.48%) other response (17.15%) received a phone alert of some kind (text alert, amber alert) (15.67%) received a phone call from a neighbor, family, friend (13.52%) received warning from a neighbor physically at my door (12.05%) received warning from public safety official physically at my door (6.88%) received a reverse 9-1-1 call (3.5%) heard sirens/bullhorns/public safety officials outside my home (3.44%) received notice on the radio (2.03%) heard a power outage alarm at my home (1.23%) received notice from a press event (0.86%) received notice from a ham radio operator (0.18%)

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AT&T mobile intercepting TCP sockets?
by Chris Adams 21 May '18

21 May '18

I ran into an odd issue with access to a website I manage from AT&T mobile devices this weekend. The website worked for everybody not on AT&T mobile, and AT&T mobile users could access other sites; the problem was just this combination. Android and iOS phones, as well as a Linux system tethered to an Android phone, all had the same problem. On the Linux system, I disabled IPv6 in Firefox, and it could then connect. Browsers got various "connection reset" type errors; on Linux, I could telnet to port 80 or 443, and it would connect and immediately close. The site does have an IPv6 address, but I had missed getting the webserver to listen on IPv6 (my mistake). Adding that looks to have solved the problem. When I ran tcpdump on the server and had someone try to connect from their AT&T mobile iPhone, I saw three connection attempts a few tenths of a second apart (all refused by the server). My question is this: is AT&T mobile intercepting the TCP socket (and not handling "connection refused" correctly)? Is that a known thing? -- Chris Adams <cma(a)cmadams.net>

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Re: Curiosity about AS3356 L3/CenturyLink network resiliency (in general)
by Scott Weeks 21 May '18

21 May '18

--- joelja(a)bogus.com wrote: From: joel jaeggli <joelja(a)bogus.com> alcatel/nokia 7750 (L3's newer PE platform) is large but not outlandish and they've been deployed for a couple years. -------------------------------------- More than a couple... I was using them for MPLS over 10 years ago. They're really good. Also, they have different sizes; from the itty bitty 7750 SR-1 (2ru) all the way to the BFR 7750 SR-12e (22ru) https://onestore.nokia.com/asset/164728/Nokia_7750_SR_R15-1_Data_Sheet_EN.p… scott

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AS 205869 - BGP hijacking source
by McBride, Mack 21 May '18

21 May '18

I am sending this notification as I have become aware that 205869 appears to be performing BGP hijacking and spoofing AS paths as well. Impacted organizations may wish to contact the upstream providers of this ASN. Mack McBride Contractor The contents of this message are my own and are not the opinions or nor do they represent my employer. E-MAIL CONFIDENTIALITY NOTICE: The contents of this e-mail message and any attachments are intended solely for the addressee(s) and may contain confidential and/or legally privileged information. If you are not the intended recipient of this message or if this message has been addressed to you in error, please immediately alert the sender by reply e-mail and then delete this message and any attachments. If you are not the intended recipient, you are notified that any use, dissemination, distribution, copying, or storage of this message or any attachment is strictly prohibited.

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Need AT&T / Ameritech DNS contact
by Wes Hardaker 21 May '18

21 May '18

Every other path at filing a bug has failed me... If there is someone here with control over ameritech.net's name servers, can you reach out to me please? -- Wes Hardaker USC/ISI

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Writing a Book about Open Networking and Dis-aggregation
by Marcus Leske 21 May '18

21 May '18

Hi, Is anyone interested in working on a book that covers topics like: ``` . Network Operating System types. . Classic vs Open Networking. . Open Networking and SDN. . Forwarding Chips. . The new stack. . Disaggregation. . Automation. . Telemetry. ``` I'm thinking of covering the reasons why dis-aggregation was delayed with networking, what are the advantages and disadvantages of that approach, the new stack on new platforms...etc The goal of the book is to educate and not to promote one vendor over the other, but i'd prefer providing exmaples using Cumulus Linux VX, Open Networking Linux, Sonic. Direct Msg me if interested to talk more. Thanks, Marcus

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