- NZNOG - lists.nznog.org

Re: [nznog] NZIX OpenFlow adventures phase 2
by Josh Bailey 08 Jan '13

08 Jan '13

Hi Nathan; Hardware flows != OpenFlow flows. OpenFlow is an API. Some reflection on these statements may suggest an answer. Thanks, == If you hit the limit of number of flows, what happens? Does it reject the flow, or does it delete older ones to make room for it? Given there is no default route, what happens if you get a packet that doesn't match a flow? Does it drop it, or punt it to the controller? (ie. is there a default flow to drop) If it deletes older flows, and punts non-matching packets to the controller, that sounds like there's a potential for really bad performance spikes as you approach the upper limits of the flow table. If it deletes older flows and drops non-matching packets, then that's worse. If you simply reject new flows, then that's a bit better, but you've got to make sure that the route reflectors never re-advertise prefixes unless they're installed in to the flow tables successfully, or you drop packets, or punt them to the controller as above. Some interesting issues to consider! Agreed re. VPLS/etc. - but you've got to make sure your switches have reliable connectivity to your controller(s). In a network like WIX, that might be hard, not sure.

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Re: [nznog] Temporary fibre cable across Wanganui river near Harihari - anybody got photos?
by Richard Naylor 08 Jan '13

08 Jan '13

At 11:38 a.m. 3/01/2013, Sam Russell wrote: >I'm sure this looks hilarious, does anyone have pictures of their >thrown fibre? You live a sheltered life and have been denied the goods things.. A good lineman will put a throw line between the two wires you ask for at the top of a pole with great ease. These days a cherry picker seems to be the answer to everything high up. My old throw line finally broke and split. Come to NZNOG-13 and buy me a beer and I'll tell you how it was made. These days I'm a little more elegant and carry a bow and arrow, with fishing line, but its really not as good as a throw line and only really good at blasting through trees. In the old days (before helicopters were cheap to hire), power boards got cables across rivers, gullys and valleys etc using rockets with a draw line. Of course, the drawline was sometimes forgotten, completely by accident, of course. In much the same way it was strange how the 11kV earth sticks kept falling into streams and rivers that had fish in them. Very strange. While a good linesman was amazing, us mere mortals caused much hilarity and rolling around laughing by the gang. Working life used to be so much fun - actually it still is. Leave the office for a day or two and experience Layer 0 engineering..

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Microsoft Office 365 Routing Issues with Telecom/Xtra/Global Gateway?
by Regan Murphy 07 Jan '13

07 Jan '13

Going to get my clients to attempt to log this with Telecom, but it sounds like a widespread problem developing.... http://www.geekzone.co.nz/forums.asp?ForumId=86&topicid=113151 -- Regan

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alcatel.co.nz domain
by Simon Lyall 07 Jan '13

07 Jan '13

This domain seems to be expiring... Just noticed cause a bunch of people are subscribed to this mailing list using it. -- Simon Lyall | Very Busy | Web: http://www.darkmere.gen.nz/ "To stay awake all night adds a day to your life" - Stilgar | eMT.

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Re: [nznog] alcatel.co.nz domain
by Peter Lambrechtsen 07 Jan '13

07 Jan '13

I've forwarded this onto a number of friends & colleagues of mine in ALU. Hopefully one of them will find someone who can sort it... Sent from my HTC Wildfire S on Telecom's XT mobile network. ----- Reply message ----- From: "Simon Lyall" <simon(a)darkmere.gen.nz> To: "nznog" <nznog(a)list.waikato.ac.nz> Subject: [nznog] alcatel.co.nz domain Date: Tue, Jan 8, 2013 9:54 am This domain seems to be expiring... Just noticed cause a bunch of people are subscribed to this mailing list using it. -- Simon Lyall | Very Busy | Web: http://www.darkmere.gen.nz/ "To stay awake all night adds a day to your life" - Stilgar | eMT. _______________________________________________ NZNOG mailing list NZNOG(a)list.waikato.ac.nz http://list.waikato.ac.nz/mailman/listinfo/nznog

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Authoritative DNS config
by Richard Hector 07 Jan '13

07 Jan '13

This isn't an NZ specific question, and also perhaps a bit basic; hope that's ok. Packaged (debian, ubuntu anyway) versions of BIND come with various default zones configured - localhost, broadcast and root hints. Are any of these actually necessary for an authoritative-only name server? It seems to me they're mostly/only useful for short-circuiting simple/standard queries on a resolver. Is that right? Not having any other zones than my own in my config would make it somewhat easier to configure views. Thanks, Richard

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Temporary fibre cable across Wanganui river near Harihari - anybody got photos?
by Sam Russell 02 Jan '13

02 Jan '13

I'm sure this looks hilarious, does anyone have pictures of their thrown fibre? Also beer -- Sam Russell Network Engineer Research & Education Advanced Network NZ Ltd ddi: +64 4 913 6365 mob: +64 21 750 819 fax: +64 4 916 0064 http://www.reannz.co.nz

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Fwd: NZIX OpenFlow adventures phase 2
by Dean Pemberton 02 Jan '13

02 Jan '13

---------- Forwarded message ---------- From: *Dean Pemberton* Date: Wednesday, January 2, 2013 Subject: NZIX OpenFlow adventures phase 2 To: Truman Boyes <truman(a)suspicious.org> Cc: nznog <nznog(a)list.waikato.ac.nz> Nox at the moment. Happy to have a chat about different controllers if you've got a preference. Dean On Tuesday, January 1, 2013, Truman Boyes wrote: > Hey Dean, > > What are you using for the OFP controller? NOX/POX/Big Switch? > > Cheers, > Truman > > > On 18 Dec, 2012, at 10:40 PM, Dean Pemberton wrote: > > > Hi Everyone, > > > > So the OpenFlow router has been up for a wee white now so it seemed > > about time to let you all poke at it. > > Phase 2 of the project is to: > > Deploy an OF switch on an exchange point which can function as a route > server. > > This switch should be able to BGP peer with any peers which currently > > use the exchange and allow for the exchange of IPv4 prefixes as > > required. > > > > I've used the information on the WIX Peer list webpage > > (http://wix.nzix.net/peers.html) to pre-configure passive[1] BGP > > peering sessions for all existing WIX participants. > > > > So feel free to use your existing WIX IP addresses and AS numbers to > connect to > > > > IP: 202.7.0.119 > > Aut-num: 9483 > > > > Things to look for: > > 1) It should pass you the routes that it learns from the route > > servers with the Flatnet AS in the path but with the original next > > hops. This longer path should mean that you won't explicitly prefer > > the routes from me. Bit of safety there. > > 2) It will pass you any other routes that people pass me directly. > > > > As I mentioned before we've got a few more plans. The next phase will > > start to take us a bit beyond what the current exchanges offer. > > > > In the new year we are going to deploy a similar switch at the APE. > > This hardware will become part of the single SDN controlled switch > > that we currently have in Wellington. > > When you peer with the OpenFlow switch at the WIX you'll get APE > > prefixes as well. Peer at the APE, you'll get WIX prefixes. > > > > Once we can get some traffic on the fabric and a presence at multiple > > places then we can really start to innovate. > > > > . BGP prefix communities based on the millisecond difference between > > your peering port and the prefix next hop > > . BGP aware RPF on the exchange (solves the pointing default problem) > > > > Got any other ideas. Throw them in the mix and we'll see what we can do. > > > > > > Have a Merry Christmas everyone. > > > > > > Regards, > > Dean > > > > > > > > [1] Passive means that I'll never reach out and initiate a session > > with you. You need to initiate the session with me. Just safer > > incase people think that I'm TCP Port 179 hax0r-ing them. > > _______________________________________________ > > NZNOG mailing list > > NZNOG(a)list.waikato.ac.nz > > http://list.waikato.ac.nz/mailman/listinfo/nznog > > > > -- Regards, Dean

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connection issues to ftp.nz.debian.org
by Hugh Davenport 27 Dec '12

27 Dec '12

Hey, On two of my servers running with different ISP's I've noticed connection issues in the last few days to ftp.nz.debian.org. I can ping it, but can't connect via HTTP or FTP. This is both on my flat server (Snap) and my parents server (Slingshot). When I try from work, which is connected to the WIX, it works fine. hugh(a)hugh-laptop:~$ ping -c 1 ftp.nz.debian.org PING ftp.citylink.co.nz (202.7.6.9) 56(84) bytes of data. 64 bytes from ftp.citylink.co.nz (202.7.6.9): icmp_req=1 ttl=60 time=13.7 ms --- ftp.citylink.co.nz ping statistics --- 1 packets transmitted, 1 received, 0% packet loss, time 0ms rtt min/avg/max/mdev = 13.792/13.792/13.792/0.000 ms hugh(a)hugh-laptop:~$ telnet ftp.nz.debian.org 80 Trying 202.7.6.9... telnet: Unable to connect to remote host: Connection timed out hugh(a)hugh-laptop:~$ telnet ftp.nz.debian.org 21 Trying 202.7.6.9... telnet: Unable to connect to remote host: Connection timed out hugh(a)hugh-laptop:~$ On an interesting note, I tried using debian.ihug.co.nz/debian which is listed as a secondary server on http://www.debian.org/mirror/list. This gave me the error. hugh(a)hugh-laptop:~$ sudo apt-get update Hit ftp://debian.ihug.co.nz wheezy InRelease E: Release file for ftp://debian.ihug.co.nz/debian/dists/wheezy/InRelease is expired (invalid since 83d 20h 47min 21s). Updates for this repository will not be applied. hugh(a)hugh-laptop:~$ When I try using netselect-apt I get the following: hugh(a)hugh-laptop:~$ sudo netselect-apt wheezy <snip> The fastest 10 servers seem to be: http://ftp.nz.debian.org/debian/ http://debian.mirror.uber.com.au/debian/ http://mirror.transact.net.au/debian/ http://mirror.cse.unsw.edu.au/debian/ http://mirror.optus.net/debian/ http://mirror.optus.net/debian/ http://debian.nautile.nc/debian/ http://ftp.iinet.net.au/debian/debian/ http://mirror.waia.asn.au/debian/ http://ftp.au.debian.org/debian/ Of the hosts tested we choose the fastest valid for HTTP: http://ftp.nz.debian.org/debian/ Writing sources.list. Done. hugh(a)hugh-laptop:~$ Any thoughts? It used to work fine, and has only cropped up in the last few days. Cheers, Hugh

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TV3 Ondemand Contact
by Ray | Taylor Communications 21 Dec '12

21 Dec '12

Would there be any list members inside Media works by any chance, or would someone have a contact who I can speak to? I seem to be having an issue with TV3 ondemand on our network - the preroll plays but the programme itself does not. Anyone that replies when I click "report issue" doesn't seem to be of any help. We have our own ip assignments from apnic. Maxmind and other such geolocation databases are indeed showing Napier as the location though this took 3 months when we got them a year ago. I was thinking it could possibly be an issue inside our main router with the RTMP protocol but I have proved it isnt. - When I go to http://nzcontent.mediaworks.co.nz I can play the http demo stream, but not the rtmp stream - When I go to http://www.etvlive.gov.et/ I can play both the http and the rtmp stream. This is just some overseas organisation who has a web facing adobe media server similar to tv3's So next I thought there could possibly be a firewall or protocol block of some sort - I can telnet into nzcontent.mediaworks.co.nz on port 1935 without an issue. Its been bugging me since we changed over to our own block of ip addresses with the occasional subscriber complaint about the tv3 service. So anyone you can refer me to inside TV3/mediaworks that can help (beyond the tier1 helpdesk monkeys) would be much appreciated. Ray Taylor Taylor Communications ray(a)ruralkwii.com 06-929-9082 021-483-280 www.taylorcom.co.nz

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