swinog November 2015

swinog@lists.swinog.ch

14 participants
9 discussions

by Daniel Borer

Hi there Does anybody know? Is there a known issue with centro grande dsl router and PPTP VPN over swisscom net? We have several customers that can’t establish a connection any more - since about 2 or 3 weeks. Thanks for some help Daniel Borer

7 years, 3 months

PeeringDB board election

by Arnold Nipper

Reminder: if you haven't yet voted for PeeringDB board, send an e-mail to secretary(a)peeringdb.com to get instructions how to do. The poll closes on 2015-11-30 23:59:59 UTC Regards, Arnold -- Arnold Nipper / nIPper consulting, Sandhausen, Germany email: arnold(a)nipper.de phone: +49 6224 5593407 2 mobile: +49 172 2650958 fax: +49 6224 5593407 9

7 years, 3 months

Nexus 5548UP to give away

by Michael Righter

Hi there Is someone interested in Cisco Nexus 5548UP (We have 4 used pieces)?? Plz send me an offer PN. thanks

7 years, 4 months

VoIP quality monitoring

by Stanislav Sinyagin

Greetings, Here's a short follow-up to yesterday's presentation of Zebbra guys. What Markus and Roland have presented, is an approach to monitoring the quality inside the box (CUCM in their case). But there are actually ways to monitor the quality outside of the box, and they have been around for a while. For example, I've seen a demonstration of Malden MultiDSLA tool over 10 years ago. At that time they only had the analog interface that emulated a handset, and two Malden boxes were sending an audio sample to each other and assessing the quality of received audio. The tool is quite expensive though. There are currently several commercial solutions for audio quality analysis: POLQA (expensive), recommended by ITU-T: it compares two audio files and produces the quality assessment score. Sevana AQuA (less expensive): it also compares two audio files and produces several quality metrics. I compared it with PESQ (predecessor of POLQA), and AQuA works significantly faster. It was very helpful in detecting lost RTP packets in the tests where I could not place a packet sniffer wherever I wanted. There are also various approaches to passive quality analysis, and some are documented in ITU-T P.563 and G.107. Sevana is also offering its PVQA tool that tries to detect packet loss and audio distortions by analyzing the input audio. I could not find any open-source tools which would help in quality analysis at the audio level. But there's plain old tshark which produces the loss and jitter statistics for RTP streams, and it's pretty efficient if you are able to capture the traffic at the receiving end. Also VoIP monitor provides the ability of G.107 analysis on captured data packets. Here's my detailed article on using Sevana AQuA: https://txlab.wordpress.com/2015/06/02/quality-assurance-for-voip-calls-2/ And here's my demo lab, and you have a possibility to send an audio recording for Sevana PVQA analysis: http://voxserv.ch/demolab.html cheers, -- Stanislav Sinyagin Senior Consultant, CCIE #5478 ssinyagin(a)k-open.com +41 79 407 0224

7 years, 4 months

Mikrotik SFP no link

by Andre Timmermann

Hello, I recently bought a Mikrotik CR1009-8G-1S-1S+. I added a Mikrotik S -31DLC20D SFP module to connect my internet uplink. The uplink provider confirmed that the uplink should be working with wavelength 1310 nm, single mode, 1GBit, no auto negotiation. Unfortunately the webinterface shows "no link". Firmware is 6.33 and I rebooted the device - still no link. Please note that I do NOT get a value for sfp-rx-power in the webinterface or the following dump. Is that a hint that the fiber is not OK or is that conclusion invalid? /interface ethernet monitor 9 name: sfp1 status: no-link auto-negotiation: disabled sfp-module-present: yes sfp-rx-lose: yes sfp-tx-fault: no sfp-type: SFP-or-SFP+ sfp-connector-type: LC sfp-link-length-9um: 20000m sfp-link-length-50um: 550m sfp-link-length-62um: 550m sfp-vendor-name: Mikrotik sfp-vendor-part-number: S-31DLC20D sfp-vendor-revision: A0 sfp-vendor-serial: MT50617H2074 sfp-manufacturing-date: 15-06-24 sfp-wavelength: 1310nm sfp-temperature: 50C sfp-supply-voltage: 3.237V sfp-tx-bias-current: 21mA sfp-tx-power: -7.055dBm Best regards, Andre

7 years, 4 months

SwiNOG-BE150 - (Fondue-)Beer Event 150 @ Walliser Keller / ZH

by Steven Glogger

Dear SwiNOGers, This is my last, regulary organized Beer Event :-/ But good news: Emanuel & Aarno will take over the organization of the 2016+ events ,-) Thank you! For my "last" event I've organized 20 places for Fondue/racelette. The menu will be fixed: Entry: Assiette Valaisanne Main Course: Fondue or Racelette Dessert: Sorbet of apricot Please indicate what you prefer (Fondue/Racelette). Be aware: 20 seats are fix reserved. First come first served. Details for the next event: ----------------------------------------------- Event: SwiNOG-BE150 - Beer Event 150 When? Monday, 14th December 2015 18:30 Where? Walliser Keller Zähringerstrasse 24, 8001 Zürich http://www.walliser-keller.ch/ (GoogleMaps Link: http://goo.gl/maps/kx3ad) Places avaiable? 20! !! Please sign up if you're really coming - because the seats are limited! !! ----------------------------------------------- Registration: Start: Wednesday, 11th November 2015 - 12:00 Stop: Wednesday, 9th December 2015 - 12:00 Reg-URL: http://swinog.be/ ----------------------------------------------- Since we have to make reservations, I need to know who's coming and who not. If you can't attend and you're registered please inform me ASAP (+41 79 277 92 35). greetings -steven

7 years, 4 months

looking for a sinmple telephony monitoring tool

by Amann Hans-Peter

Hello, We are looking for a tool that permits to check the behavior of a telephony system at the level of the end user. The idea is to launch telephone calls at regular intervals one system, to pass through the public network and to check on the PABX system under test (Siemens HiPath 4000 with Trade-Boards) that the voice call arrives (signaling path) and can be established (voice path). Our problem today is that we can check plenty of internal interfaces and links, but we do not known if all the higher level protocols behave well. Thanks for your ideas ! Hans-Peter Amann Etat de Neuchâtel Hans-Peter.amann(a)ne.ch

7 years, 4 months

SwiNOG #29 is day after tomorrow

by Simon Ryf

Dear Participants and Speakers Please find general information about the SwiNOG #29 meeting below. Date: 05.11.2015 - Registration 08h15 - 09h15 Location: Gurtenpark, Bern. NEW Location: it's now closer to the station. Follow the signs. >From Bern main station you may take: - S-Bahn S3 Belp and exit at Wabern station - Tram 9 (Wabern) and exit at Gurtenbahn stop (http://www.bernmobil.ch/file/pdf_fahrplaene/141214/L9/ah_01009L_j15_B_00001 _3.pdf?_=1446578381) ==> Then take the Gurtenbahn to the Gurtenpark. You DO NOT have to pay a fee, just tell you attend to the SwiNOG event. Don't throw away the ticket - you'll need it to get down. Map (Ground Station of the cable rail): https://goo.gl/maps/5uSKtgbianM2 Suggested trains from Geneva: 06h14 Zurich: 07h02 WIRELESS ACCESS During the meeting you have access to free WLAN! - SSID: MOBILE - Credentials will be printed on your badge - YOU are responsible for the security of your data, this WLAN is not encrypted! Many thanks to our sponsors! Juniper, Brocade, Cisco See you at SwiNOG #29! Simon Ryf SwiNOG Organisation

7 years, 4 months

Bluewin MX Protocol Errors

by Daniel Kamm

Do any other also got troubles in messaging @bluewin.ch customers? Nov 2 14:32:54 postfix/smtp[8102]: <XXXX>: to=<XXXXX(a)bluewin.ch>, relay=mxbw.lb.bluewin.ch[195.186.99.50]:25, delay=0.07, delays=0/0/0.03/0.03, dsn=5.5.0, status=bounced (Protocol error: host mxbw.lb.bluewin.ch[195.186.99.50] said: 250 2.0.0 RCPT TO accepted (in reply to DATA command)) TIA - Dan

7 years, 4 months

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swinog November 2015