January 2019 - Test - lists.nanog.org

does emergency (911) dispatch uses IP ?
by Mankamana Mishra (mankamis) 02 Jan '19

02 Jan '19

Guys, While reading CL network down impacting 911 services, was trying to get more information about how does this network looks like. From end user to center, I guess VOIP is used. Wondering what is the communication method from Emergency service center to end units (Police, Fire or any other services). Do they also use IP ? or its Still Radio only ? if it is IP, do they use Unicast or multicast or broadcast ? Tried googling, but did not get much information. Any insight would be appreciated. Thanks Mankamana

3 4

CenturyLink RCA?
by Saku Ytti 02 Jan '19

02 Jan '19

Apologies for the URL, I do not know official source and I do not share the URLs sentiment. https://fuckingcenturylink.com/ Can someone translate this to IP engineer? What did actually happen? >From my own history, I rarely recognise the problem I fixed from reading the public RCA. I hope CenturyLink will do better. Best guess so far that I've heard is a) CenturyLink runs global L2 DCN/OOB b) there was HW fault which caused L2 loop (perhaps HW dropped BPDU, I've had this failure mode) c) DCN had direct access to control-plane, and L2 congested control-plane resources causing it to deprovision waves Now of course this is entirely speculation, but intended to show what type of explanation is acceptable and can be used to fix things. Hopefully CenturyLink does come out with IP-engineering readable explanation, so that we may use it as leverage to support work in our own domains to remove such risks. a) do not run L2 DCN/OOB b) do not connect MGMT ETH (it is unprotected access to control-plane, it cannot be protected by CoPP/lo0 filter/LPTS ec) c) do add in your RFP scoring item for proper OOB port (Like Cisco CMP) d) do fail optical network up -- ++ytti

15 22

Auto-configuring IPv6 transition mechanisms on customer devices
by Brandon Martin 02 Jan '19

02 Jan '19

Are there any (draft, standard, or otherwise) defined mechanisms for indicating to customer-provided devices that they should configure IPv6 to IPv4 transition mechanisms such as MAP, 4rd, 464XLAT, etc. and providing the configuration details thereof? I'm not aware of any. It seems like this is something that, if defined, would make deployment of such mechanisms a lot easier even if SPs provide the customer edge router that implements said mechanisms. I guess they'd probably be implemented as extensions to DHCPv6 or similar or embedded in RAs (the latter seems ugly). -- Brandon Martin

4 8

RE: CenturyLink
by Erik Sundberg 01 Jan '19

01 Jan '19

The outage list already has a long thread on this. https://puck.nether.net/mailman/listinfo/outages From: NANOG <nanog-bounces(a)nanog.org<mailto:nanog-bounces@nanog.org>> On Behalf Of Dennis Burgess via NANOG Sent: Thursday, December 27, 2018 2:00 PM To: Naslund, Steve <SNaslund(a)medline.com<mailto:SNaslund@medline.com>>; nanog(a)nanog.org<mailto:nanog@nanog.org> Subject: RE: CenturyLink National outage since 4:33 am this morning.. [LTI-Full_175px] Dennis Burgess, Mikrotik Certified Trainer Author of "Learn RouterOS- Second Edition" Link Technologies, Inc -- Mikrotik & WISP Support Services Office: 314-735-0270 Website: http://www.linktechs.net<http://www.linktechs.net/> Create Wireless Coverage's with www.towercoverage.com From: NANOG <nanog-bounces(a)nanog.org<mailto:nanog-bounces@nanog.org>> On Behalf Of Naslund, Steve Sent: Thursday, December 27, 2018 12:46 PM To: nanog(a)nanog.org<mailto:nanog@nanog.org> Subject: CenturyLink Anyone have any insight to the nationwide CenturyLink issues/outages today? Just wondering. Know for sure that our connections to them from Florida, Iowa, and Washington State are all affected. Voice and data. Steven Naslund Chicago IL ________________________________ CONFIDENTIALITY NOTICE: This e-mail transmission, and any documents, files or previous e-mail messages attached to it may contain confidential information that is legally privileged. If you are not the intended recipient, or a person responsible for delivering it to the intended recipient, you are hereby notified that any disclosure, copying, distribution or use of any of the information contained in or attached to this transmission is STRICTLY PROHIBITED. If you have received this transmission in error please notify the sender immediately by replying to this e-mail. You must destroy the original transmission and its attachments without reading or saving in any manner. Thank you.

19 32