Hi,
I tried to report this issue to the Cablecom support, but I wasn't very
successful...
Recently, it looks like my home Cablecom connection was migrated to a DS-Lite
setup. I get a public IPv6 address and a private IPv4 address. My IPv4 packets
get encapsulated in IPv6, sent to a NATing gateway in the Cablecom network, and
NATed there. At least, I have native IPv6 at home now, which is nice, but this
is creating various problems for me. The worse one seems to be that path MTU is
broken:
dws@shuttle:~$ ping -s 1433 8.8.8.8
PING 8.8.8.8 (8.8.8.8) 1433(1461) bytes of data.
From 192.0.0.2 icmp_seq=1 Frag needed and DF set (mtu = 1474)
From 192.0.0.2 icmp_seq=2 Frag needed and DF set (mtu = 1474)
From 192.0.0.2 icmp_seq=3 Frag needed and DF set (mtu = 1474)
So some Cablecom router is sending ICMP errors saying that I should fragment
the packets to at most 1474 bytes, when in fact I am sending packets that are
1461 bytes long. As you can see above, ping doesn't work at all with path MTU
discovery, because the discovered MTU is incorrect.
If I manually reduce the size to 1460, it works, so this seems to be the
real MTU:
dws@shuttle:~$ ping -s 1432 8.8.8.8
PING 8.8.8.8 (8.8.8.8) 1432(1460) bytes of data.
1440 bytes from 8.8.8.8: icmp_seq=1 ttl=58 time=10.4 ms
1440 bytes from 8.8.8.8: icmp_seq=2 ttl=58 time=10.6 ms
Do you agree with my analysis that this is a problem in Cablecom's network?
Cheers
David
Call for Presentations
European Peering Forum 10
AMS-IX, DE-CIX, LINX, Netnod and guest IXP Equinix, are happy to host
the 10th European Peering Forum (EPF) in Madrid, Spain from the 21st
till the 23th of September 2015. The event will welcome up to 250
peering managers and coordinators from networks connected to the host
Internet exchanges. Besides an interesting topical agenda, the three-day
event accommodates room for attendees to meet on a one-to-one basis to
discuss bilateral peering business opportunities.
The programme committee will be looking for presentations and lightning
talks related to peering and technical topics of interconnection. Your
presentation should address
* Interconnection Automation
* Regional Peering
* Interconnection and Peering Internet Governance and Regulatory Topics
* Economic and Product Trends
* Peering/Interconnection Strategy
* Interesting findings about peering
* 100GE
Submissions
===========
Presentations must be of a non-commercial nature. Product or marketing
heavy talks are strongly discouraged.
Submissions of presentations should be made to the programme committee
<epf-pc(a)peering-forum.eu>. Please include:
* Author's name and e-mail
* Presentation title
* Abstract
* Slides (if available)
* Time requested
Deadlines
=========
Presentation Abstract Deadline 2015-07-20 12:00 UTC
Final Selection of Speakers 2015-07-31
Presentation Slides Submission Deadline 2015-09-04 12:00 UTC
--
Arnold Nipper
CTO/COO and Co-Founder
DE-CIX Management GmbH | Lindleystrasse 12 | 60314 Frankfurt am Main |
Germany | www.de-cix.net | Phone +49 69 1730902 22 |
Mobile +49 172 2650958 | Fax +49 69 4056 2716 |
arnold.nipper(a)de-cix.net | Geschaeftsfuehrer Harald A. Summa |
Registergericht AG Koeln HRB 51135
---------- Forwarded message ----------
Invitation to ISOC InterCommunity 2015 on July 8th
Summary
=======
On Wed, 08 July 2015 08-16 the ISOC InterCommunity 2015 is taking place as
a worldwide event interconnected by means of Videoconferencing. In
Switzerland we have two sites (Zurich and Geneva), where people can attend
physically.
From Zurich National Councilor (Nationalrat) Balthasar Glättli
will inform us about the latest development regarding the new
surveillance From Istanbul we will hear about the consequences of
governmental Internet interference.
The is also lots of room for discussions among the participants around
Europe. Breakfast and lunch included for all local participants.
Please register by July 5th on:
* Zurich: http://www.isoc.ch/events/isoc-intercommunity-2015-zurich
* Geneva: http://www.isoc.ch/events/isoc-intercommunity-2015-geneva
Long version
============
The ISOC InterCommunity 2015 meeting will take place on Wednesday, 8. July 2015 08:00; a meeting around the globe by means of video-conferencing. We cordially invite you to join us locally in Zurich or Geneva. We will offer breakfast and lunch for all local participants.
After the global part (8-10:30), an Inter-European meeting, with interconnected hubs from Istanbul, Amsterdam, Geneva and Zurich is taking place (11-16). Besides presentations from all the hubs, the agenda (see below) has a lot of room for interactive discussions.
As you may know the Swiss Parliament is currently debating on two new laws
to extend surveillance of citizens in Switzerland (BÜFF/NDG), where law enforcement and secret service demand more access to all citizens communication data.
National Councilor (Nationalrat) Balthasar Glättli will give us an update on
the state of the parliamentary debate of these two surveillance acts.
Another highlight will be the contribution from Istanbul which shows the
consequences of too much governmental surveillance (including censorship).
You can find all contributions in the agenda below.
If you will attend personally in Zurich or Geneva, please register now on:
* Zurich: http://www.isoc.ch/events/isoc-intercommunity-2015-zurich
* Geneva: http://www.isoc.ch/events/isoc-intercommunity-2015-geneva
We kindly request you to register latest by July, 5th.
Agenda:
07:45 – 08:00 Arrival of participants / Networking / Breakfast
08:00 – 10:30 1st session
ISOC InterCommunity2015 (worldwide)
* Introduction by Kathy Brown, President and CEO
* The Global Internet Report and Accessibility, Michael Kende
* Collaborative Governance, Constance Bommelaar
* Collaborative Security, Olaf Kolkman
* The Identity of the Internet Society, James Wood
* Closing by Kathy Brown, President and CEO
10:30 – 11:00 Coffee Break
11:00 – 12:30 2nd session
* From GENEVA:
An overall view on privacy and surveillance
by Christine Runnegar, ISOC Director of Public Policy
* From AMSTERDAM:
Recent development privacy and surveillance in the European Union (EU)
by N.N.
* Open Discussion among the participants (on all presentations)
12:30 – 14:00 Lunch Break
14:00 – 16:00 3rd session
* From ZURICH:
Current proposals in Swiss parliament on extending governmental
surveillance (BÜPF/NDG)
by National Councilor Balthasar Glättli, member of the Swiss Parliament
* From ISTANBUL:
Privacy, Censorship and Surveillance under Turkish Law and Practice: An
Overview of a Problematic Decade
by Ceren Unal, LLM-President, Internet Society Turkey Chapter
* Open Discussion among the participants (on both presentations)
Hi
Someone interested in 5 pce. Cisco 4503 Switches for almost free ?
Chassis Type : WS-C4503
Mod Ports Card Type Model Serial
No.
---+-----+--------------------------------------+------------------+-----------
1 2 Supervisor V 1000BaseX (GBIC) WS-X4516
JAE1010XP8Z
2 18 1000BaseX (GBIC) WS-X4418-GB
JAE0825M45V
3 48 10/100/1000BaseT (RJ45)V, Cisco/IEEE WS-X4548-GB-RJ45V
JAE10307BNJ
contact me off-list
Peter
Hello everybody
We are just a small IT company and host some services.
I recently decided to apply as LIR and to run our own AS with our own
IPv6- and IPv4-Prefixes and last week it became true, almost :-)
Now I try to get into the whole peering, BGP, IP transit business. I'm a
complete "newbie" and had to find out that it's quite difficult to get
in touch with the right people at possible ISP partners.
If someone has time and joy to help us getting "connected", any support
is very much appreciated. We may pay in Beer/Mate, CHF/EUR/USD or good
karma ;-)
Greetings
Markus Meier
--
Innotronic Ingenieurbüro GmbH Informatik | Telekommunikation
Lerzenstrasse 27, 8953 Dietikon, Switzerland
Telefon +41 44 997 17 27
Web http://www.inno.ch/
Hi,
a customer with a UPC line has contacted us to ask how a PTR-record for his IPV6-address could be created.
Customer also asked for IPV6-resolvers…
Address/network in question is:
2a02:aa08:e000:b00:: /56
Currently, it looks like this range isn’t delegated.
dig -x 2a02:aa08:e000::
; <<>> DiG 9.9.4-rpz2.13269.14-P2 <<>> -x 2a02:aa08:e000::
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NXDOMAIN, id: 30794
;; flags: qr rd ra; QUERY: 1, ANSWER: 0, AUTHORITY: 1, ADDITIONAL: 1
;; OPT PSEUDOSECTION:
; EDNS: version: 0, flags:; udp: 4000
;; QUESTION SECTION:
;0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.e.8.0.a.a.2.0.a.2.ip6.arpa. IN PTR
;; AUTHORITY SECTION:
0.a.2.ip6.arpa. 899 IN SOA pri.authdns.ripe.net. dns.ripe.net. 1434384236 3600 600 864000 7200
Or am I wrong?
Maybe somebody from UPC can contact me off-list to direct me to the people responsible for UPC-Cablecoms reverse-DNS-infrastructure…
Thanks in advance.
Hi there,
I'm looking for reasonably priced QSFP (40GE) to SFP+ (10GE) twinax breakout cables (3m long or so). I can
order via ebay for ~$150 but I was wondering whether there's a local distributor who has
a stock for them and doesn't sell them at 500CHF or more... Any recommendation?
Also, what kind of adapter would I need to break out a QSFP to 4 SFP+ sockets (where I could then attach
fiber SFP+)? Haven't seem something like that, but perhaps I'm searching wrong?
Thanks for any hints !
Cheers,
Markus
