- NZNOG - lists.nznog.org

92/8, 93/8 allocated to the RIPE NCC
by Leo Vegoda 27 Mar '07

27 Mar '07

Hi, The IANA IPv4 registry has been updated to reflect the allocation of two /8 IPv4 blocks to the RIPE NCC in March 2007: 92/8 and 93/8. You can find the IANA IPv4 registry at: http://www.iana.org/assignments/ipv4-address-space Please update your filters as appropriate. Regards, -- Leo Vegoda IANA Numbers Liaison

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Re: [nznog] jumbo frames
by Jonathan Woolley 27 Mar '07

27 Mar '07

>>> Can I see the maths behind this? If you're talking about packet >loss >>> due to congestion and not using TCP then you're probably right >> >>I assume he's talking about my TFRC math from >>http://wand.net.nz/~perry/max_download.php >> >>Assuming you've saturated your link, a one bit in 'n' is going to >take >>out one packet every so often (if it takes out more than that you're >not >>going to get anything much worth discussing over your link in the >first >>place). So increasing the MTU isn't going to make it more likely >that a >>packet is lost, it just means you need to retransmit a larger >packet. >> >>However, since you're using larger MTU's, it's going to take you >less >>RTT's to get back up to full speed on your link, and therefore your >link >>will spend more of its time going at full rate than if you had a >lower >>MTU (since it would require more RTT's at lower throughput before it > >>starts saturating the link again). Ahh, ok. That's an interesting scenario. I'll have a look at the link Jono

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Re: [nznog] jumbo frames
by Jonathan Woolley 27 Mar '07

27 Mar '07

>>If you're fragmenting and drop one packet of a 4-packet-sequence you >waste >>the other 3 packets anyway as its gotta send the whole oversize >packet as >>multiple fragments all over again. My guess is that is his >reasoning - >>and seems fair... Sending a 9600byte packet in one frame, or fragmented into seven frames isn't really a meaningful test if you're trying to prove that jumbo frames are better when there is packet loss. In the real world, the non-jumbo frame setup would only send 1500 byte packets...

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Re: [nznog] jumbo frames
by Jonathan Woolley 27 Mar '07

27 Mar '07

So the most common real world example in NZ is UBS. Take the subscriber's 1500byte packet, add a PPP header, an extra IP and UDP header (for L2TP) and two MPLS headers (inside TNZ's netowrk) and jumbo frames look pretty useful. As alluded to below, 802.1q and especially stacking of vlans are strong reasons, even more so if transported over MPLS (Martini/VPLS). Jono > > > >---- Original Message ---- >From: nznog(a)daork.net >To: NZNOG(a)list.waikato.ac.nz >Subject: Re: [nznog] jumbo frames >Date: Wed, 28 Mar 2007 15:04:56 +1200 > >>MPLS. >>VLANs. >>L2TP with 1500byte payloads. >> >>etc. >> >>On 28/03/2007, at 3:01 PM, Ian Batterbee wrote: >> >>> Has anyone got any real world experience of the usefulness of >jumbo >>> frames on ethernet (ie, MTU > 1500 bytes). A number of 1000mbps >>> interfaces support it, but it seems to be that it would only be >useful >>> if jumbo frames were supported and enabled on all equipment >between >>> the >>> sending NIC and final IP destination, so I'm struggling to see how >>> enabling it in just say the core of a network would be all that >>> helpful. >>> >>> >>> >>> _______________________________________________ >>> NZNOG mailing list >>> NZNOG(a)list.waikato.ac.nz >>> http://list.waikato.ac.nz/mailman/listinfo/nznog >>> >>> !DSPAM:22,4609daac107231355811551! >>> >>> >> >>_______________________________________________ >>NZNOG mailing list >>NZNOG(a)list.waikato.ac.nz >>http://list.waikato.ac.nz/mailman/listinfo/nznog

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Notification of NZRR Database changes
by NZRR Database Notifications 27 Mar '07

27 Mar '07

Dear Colleague, This is to notify you that some object(s) in NZRR database which you either maintain or are listed as to-be-notified have been added, deleted or changed. These objects are used to configure the various NZIX route servers (http://nzix.net/) so you can expect the relevant servers to be reloaded in the near future. The reloading of the servers is staggered over a period of time so that if you are peering with both servers at an exchange, you can maintain at least one BGP session at all times and consequently a full set of routes. --- PREVIOUS OBJECT: route-set: AS9560:RS-ROUTES:AS9503 descr: advertised to AS9560 by FX Networks - AS9503 members: 131.203.0.0/16^16-29, 161.29.0.0/16^16-29, 161.65.0.0/16^16-29, 202.53.176.0/20^20-29, 202.174.160.0/20^20-29, 202.191.32.0/20^20-29, 210.48.160.0/20^20-29, 123.108.144.0/21^21-29, 202.46.176.0/21^21-29, 202.78.240.0/21^21-29, 203.190.208.0/21^21-29, 202.37.48.0/22^22-29, 202.59.4.0/22^22-29, 202.124.106.0/23^23-29, 192.88.85.0/24^24-29, 192.133.31.0/24^24-29, 202.20.97.0/24^24-29, 202.27.208.0/24^24-29, 202.36.119.0/24^24-29, 202.36.183.0/24^24-29, 202.46.190.0/24^24-29, 202.49.106.0/24^24-29, 202.50.247.0/24^24-29 admin-c: RPA1-NZRR tech-c: RPA1-NZRR notify: rpsl-admin(a)nzix.net notify: nznog(a)list.waikato.ac.nz notify: noc-minor(a)fx.net.nz mnt-by: MAINT-NZRR-NZ changed: rpsl-admin(a)nzix.net 20070226 source: NZRR REPLACED BY: route-set: AS9560:RS-ROUTES:AS9503 descr: advertised to AS9560 by FX Networks - AS9503 members: 131.203.0.0/16^16-29, 161.29.0.0/16^16-29, 161.65.0.0/16^16-29, 166.65.0.0/16^16-29, 202.53.176.0/20^20-29, 202.174.160.0/20^20-29, 202.191.32.0/20^20-29, 210.48.160.0/20^20-29, 123.108.144.0/21^21-29, 202.46.176.0/21^21-29, 202.78.240.0/21^21-29, 203.190.208.0/21^21-29, 202.37.48.0/22^22-29, 202.59.4.0/22^22-29, 202.124.106.0/23^23-29, 192.88.85.0/24^24-29, 192.133.31.0/24^24-29, 192.195.219.0/24^24-29, 202.20.97.0/24^24-29, 202.27.208.0/24^24-29, 202.36.119.0/24^24-29, 202.36.183.0/24^24-29, 202.46.190.0/24^24-29, 202.49.106.0/24^24-29, 202.50.247.0/24^24-29 admin-c: RPA1-NZRR tech-c: RPA1-NZRR notify: rpsl-admin(a)nzix.net notify: nznog(a)list.waikato.ac.nz notify: noc-minor(a)fx.net.nz mnt-by: MAINT-NZRR-NZ changed: rpsl-admin(a)nzix.net 20070328 source: NZRR

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Notification of NZRR Database changes
by NZRR Database Notifications 25 Mar '07

25 Mar '07

Dear Colleague, This is to notify you that some object(s) in NZRR database which you either maintain or are listed as to-be-notified have been added, deleted or changed. These objects are used to configure the various NZIX route servers (http://nzix.net/) so you can expect the relevant servers to be reloaded in the near future. The reloading of the servers is staggered over a period of time so that if you are peering with both servers at an exchange, you can maintain at least one BGP session at all times and consequently a full set of routes. --- PREVIOUS OBJECT: route-set: AS9439:RS-ROUTES:AS38292 descr: advertised to AS9439 by ZeroOne (NZ) Limited - AS38292 members: 202.174.6.0/23^23-29 admin-c: RPA1-NZRR tech-c: RPA1-NZRR notify: rpsl-admin(a)nzix.net notify: nznog(a)list.waikato.ac.nz notify: noc(a)zeroone.co.nz mnt-by: MAINT-NZRR-NZ changed: rpsl-admin(a)nzix.net 20070214 source: NZRR REPLACED BY: route-set: AS9439:RS-ROUTES:AS38292 descr: advertised to AS9439 by ZeroOne (NZ) Limited - AS38292 members: 202.174.6.0/23^23-29, 203.152.104.104/29 admin-c: RPA1-NZRR tech-c: RPA1-NZRR notify: rpsl-admin(a)nzix.net notify: nznog(a)list.waikato.ac.nz notify: noc(a)zeroone.co.nz mnt-by: MAINT-NZRR-NZ changed: rpsl-admin(a)nzix.net 20070326 source: NZRR

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Xtra accepting ping
by Michael Fincham 24 Mar '07

24 Mar '07

Is it just me, or did some of Xtra's servers (specifically alien.xtra.co.nz/www.xtra.co.nz but probably more) suddenly stop replying to echo requests at some point this afternoon? Certainly had me stumped/panicking when my traceroute died at the penultimate hop... -- --Michael Fincham Unleash Technology Solutions

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The wacky, weird world of not peering
by Philip D'Ath 21 Mar '07

21 Mar '07

http://computerworld.co.nz/news.nsf/news/60FED800168312AECC2572A0001A299 7 ... Thankfully we have heard that Telecom is reconsidering its approach and we say it is about time. With continued data growth, IP-based voice and video becoming widespread, and an increasing number of networks being developed, it is critical that local data is kept local and the most efficient paths across the network are utilised. Telecom has recently been reported in the media as saying it is seriously looking at and now supports the concept of local internet interconnection. Rumours abound of a June/July timetable. Of course for their customers, and TelstraClear's, one would expect they never stopped local interconnection, but this move would re-integrate Telecom with the rest of the internet at a local level. ...

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Notification of NZRR Database changes
by NZRR Database Notifications 21 Mar '07

21 Mar '07

Dear Colleague, This is to notify you that some object(s) in NZRR database which you either maintain or are listed as to-be-notified have been added, deleted or changed. These objects are used to configure the various NZIX route servers (http://nzix.net/) so you can expect the relevant servers to be reloaded in the near future. The reloading of the servers is staggered over a period of time so that if you are peering with both servers at an exchange, you can maintain at least one BGP session at all times and consequently a full set of routes. --- PREVIOUS OBJECT: route-set: AS9560:RS-ROUTES:AS7657 descr: advertised to AS9560 by IHUG - AS7657 members: 124.168.0.0/16^16-29, 203.59.0.0/16^16-29, 203.109.128.0/17^17-29, 203.118.128.0/17^17-29, 203.173.128.0/17^17-29, 203.206.0.0/17^17-29, 203.214.0.0/17^17-29, 210.84.0.0/18^18-29, 202.161.0.0/19^19-29, 203.96.192.0/19^19-29, 203.158.32.0/19^19-29, 203.166.224.0/19^19-29, 203.173.0.0/19^19-29, 203.206.128.0/19^19-29, 203.206.224.0/19^19-29, 203.214.128.0/19^19-29, 203.217.32.0/19^19-29, 203.217.64.0/19^19-29, 202.36.16.0/20^20-29, 202.46.160.0/20^20-29, 202.137.96.0/20^20-29, 203.173.32.0/20^20-29, 203.190.192.0/20^20-29, 202.49.64.0/21^21-29, 202.126.80.0/21^21-29, 202.129.80.0/21^21-29, 202.129.96.0/21^21-29, 203.173.48.0/21^21-29, 203.206.168.0/21^21-29, 203.206.176.0/21^21-29, 203.215.0.0/21^21-29, 203.217.0.0/21^21-29, 203.217.16.0/21^21-29, 210.55.248.0/21^21-29, 198.48.0.0/22^22-29, 202.8.44.0/22^22-29, 202.49.240.0/22^22-29, 202.50.188.0/22^22-29, 202.129.68.0/22^22-29, 202.129.76.0/22^22-29, 202.129.108.0/22^22-29, 202.129.116.0/22^22-29, 202.129.120.0/22^22-29, 203.14.168.0/22^22-29, 203.55.228.0/22^22-29, 203.57.140.0/22^22-29, 203.62.212.0/22^22-29, 203.173.56.0/22^22-29, 203.206.164.0/22^22-29, 203.206.184.0/22^22-29, 203.206.192.0/22^22-29, 203.206.204.0/22^22-29, 203.206.220.0/22^22-29, 203.215.8.0/22^22-29, 203.217.12.0/22^22-29, 203.217.28.0/22^22-29, 202.21.136.0/23^23-29, 202.36.94.0/23^23-29, 202.36.230.0/23^23-29, 202.49.46.0/23^23-29, 202.49.88.0/23^23-29, 202.49.148.0/23^23-29, 202.49.176.0/23^23-29, 202.49.180.0/23^23-29, 202.61.2.0/23^23-29, 202.128.110.0/23^23-29, 202.129.72.0/23^23-29, 202.129.88.0/23^23-29, 202.129.92.0/23^23-29, 202.129.106.0/23^23-29, 202.129.114.0/23^23-29, 203.7.196.0/23^23-29, 203.8.92.0/23^23-29, 203.14.174.0/23^23-29, 203.17.62.0/23^23-29, 203.21.74.0/23^23-29, 203.29.86.0/23^23-29, 203.55.140.0/23^23-29, 203.56.30.0/23^23-29, 203.56.62.0/23^23-29, 203.57.10.0/23^23-29, 203.57.136.0/23^23-29, 203.173.60.0/23^23-29, 203.206.162.0/23^23-29, 203.206.188.0/23^23-29, 203.206.202.0/23^23-29, 203.206.208.0/23^23-29, 203.206.218.0/23^23-29, 203.215.14.0/23^23-29, 203.215.18.0/23^23-29, 203.215.20.0/23^23-29, 203.217.10.0/23^23-29, 210.55.202.0/23^23-29, 192.107.113.0/24^24-29, 192.188.107.0/24^24-29, 198.32.71.0/24^24-29, 199.98.84.0/24^24-29, 202.7.6.0/24^24-29, 202.12.87.0/24^24-29, 202.21.130.0/24^24-29, 202.36.44.0/24^24-29, 202.36.46.0/24^24-29, 202.36.174.0/24^24-29, 202.37.182.0/24^24-29, 202.49.33.0/24^24-29, 202.49.59.0/24^24-29, 202.49.63.0/24^24-29, 202.49.140.0/24^24-29, 202.49.144.0/24^24-29, 202.49.178.0/24^24-29, 202.49.186.0/24^24-29, 202.49.249.0/24^24-29, 202.50.84.0/24^24-29, 202.50.103.0/24^24-29, 202.50.255.0/24^24-29, 202.128.109.0/24^24-29, 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203.215.17.0/24^24-29, 210.8.138.0/24^24-29, 210.55.110.0/24^24-29, 210.55.184.0/24^24-29 admin-c: RPA1-NZRR tech-c: RPA1-NZRR notify: rpsl-admin(a)nzix.net notify: nznog(a)list.waikato.ac.nz notify: pshem.k(a)staff.ihug.co.nz mnt-by: MAINT-NZRR-NZ changed: rpsl-admin(a)nzix.net 20060522 source: NZRR REPLACED BY: route-set: AS9560:RS-ROUTES:AS7657 descr: advertised to AS9560 by Ihug Ltd - AS7657 members: 121.90.0.0/16^16-29, 124.168.0.0/16^16-29, 203.59.0.0/16^16-29, 203.173.128.0/17^17-29, 203.206.0.0/17^17-29, 203.214.0.0/17^17-29, 202.129.64.0/18^18-29, 210.84.0.0/18^18-29, 124.6.192.0/19^19-29, 202.161.0.0/19^19-29, 203.158.32.0/19^19-29, 203.166.224.0/19^19-29, 203.173.0.0/19^19-29, 203.206.128.0/19^19-29, 203.214.128.0/19^19-29, 203.217.32.0/19^19-29, 203.217.64.0/19^19-29, 202.46.160.0/20^20-29, 202.73.192.0/20^20-29, 203.173.32.0/20^20-29, 203.190.192.0/20^20-29, 202.49.64.0/21^21-29, 202.126.80.0/21^21-29, 203.173.48.0/21^21-29, 203.206.168.0/21^21-29, 203.206.176.0/21^21-29, 203.215.0.0/21^21-29, 203.217.0.0/21^21-29, 203.217.16.0/21^21-29, 210.55.248.0/21^21-29, 202.49.240.0/22^22-29, 203.14.168.0/22^22-29, 203.55.228.0/22^22-29, 203.57.140.0/22^22-29, 203.62.212.0/22^22-29, 203.173.56.0/22^22-29, 203.206.164.0/22^22-29, 203.206.184.0/22^22-29, 203.206.192.0/22^22-29, 203.206.204.0/22^22-29, 203.206.220.0/22^22-29, 203.215.8.0/22^22-29, 203.217.12.0/22^22-29, 203.217.28.0/22^22-29, 202.36.94.0/23^23-29, 202.36.230.0/23^23-29, 202.49.88.0/23^23-29, 202.49.176.0/23^23-29, 202.49.180.0/23^23-29, 202.128.110.0/23^23-29, 203.7.196.0/23^23-29, 203.8.92.0/23^23-29, 203.14.174.0/23^23-29, 203.17.62.0/23^23-29, 203.21.74.0/23^23-29, 203.29.86.0/23^23-29, 203.55.140.0/23^23-29, 203.56.30.0/23^23-29, 203.56.62.0/23^23-29, 203.57.10.0/23^23-29, 203.57.136.0/23^23-29, 203.173.60.0/23^23-29, 203.206.162.0/23^23-29, 203.206.188.0/23^23-29, 203.206.202.0/23^23-29, 203.206.208.0/23^23-29, 203.206.218.0/23^23-29, 203.215.18.0/23^23-29, 203.215.20.0/23^23-29, 203.217.10.0/23^23-29, 210.55.202.0/23^23-29, 97.64.46.0/24^24-29, 192.107.113.0/24^24-29, 192.188.107.0/24^24-29, 198.32.71.0/24^24-29, 202.7.6.0/24^24-29, 202.8.47.0/24^24-29, 202.12.87.0/24^24-29, 202.21.130.0/24^24-29, 202.36.44.0/24^24-29, 202.36.46.0/24^24-29, 202.36.174.0/24^24-29, 202.37.136.0/24^24-29, 202.37.182.0/24^24-29, 202.49.33.0/24^24-29, 202.49.59.0/24^24-29, 202.49.63.0/24^24-29, 202.49.140.0/24^24-29, 202.49.144.0/24^24-29, 202.49.178.0/24^24-29, 202.49.186.0/24^24-29, 202.49.249.0/24^24-29, 202.50.84.0/24^24-29, 202.50.103.0/24^24-29, 202.50.255.0/24^24-29, 202.128.109.0/24^24-29, 202.169.97.0/24^24-29, 202.176.0.0/24^24-29, 203.0.12.0/24^24-29, 203.0.84.0/24^24-29, 203.0.139.0/24^24-29, 203.0.178.0/24^24-29, 203.1.24.0/24^24-29, 203.1.78.0/24^24-29, 203.2.199.0/24^24-29, 203.3.127.0/24^24-29, 203.4.173.0/24^24-29, 203.5.184.0/24^24-29, 203.7.155.0/24^24-29, 203.7.173.0/24^24-29, 203.8.161.0/24^24-29, 203.8.219.0/24^24-29, 203.12.1.0/24^24-29, 203.12.15.0/24^24-29, 203.12.44.0/24^24-29, 203.12.236.0/24^24-29, 203.14.172.0/24^24-29, 203.14.182.0/24^24-29, 203.15.111.0/24^24-29, 203.15.129.0/24^24-29, 203.16.34.0/24^24-29, 203.17.60.0/24^24-29, 203.17.194.0/24^24-29, 203.17.249.0/24^24-29, 203.17.251.0/24^24-29, 203.18.85.0/24^24-29, 203.18.140.0/24^24-29, 203.19.70.0/24^24-29, 203.20.82.0/24^24-29, 203.20.88.0/24^24-29, 203.20.116.0/24^24-29, 203.20.132.0/24^24-29, 203.21.5.0/24^24-29, 203.21.105.0/24^24-29, 203.22.19.0/24^24-29, 203.22.96.0/24^24-29, 203.23.7.0/24^24-29, 203.24.50.0/24^24-29, 203.24.189.0/24^24-29, 203.25.109.0/24^24-29, 203.25.144.0/24^24-29, 203.25.197.0/24^24-29, 203.26.32.0/24^24-29, 203.26.86.0/24^24-29, 203.26.92.0/24^24-29, 203.26.128.0/24^24-29, 203.27.58.0/24^24-29, 203.27.60.0/24^24-29, 203.27.89.0/24^24-29, 203.27.201.0/24^24-29, 203.28.157.0/24^24-29, 203.28.174.0/24^24-29, 203.29.221.0/24^24-29, 203.30.181.0/24^24-29, 203.30.194.0/24^24-29, 203.31.13.0/24^24-29, 203.31.96.0/24^24-29, 203.31.141.0/24^24-29, 203.34.95.0/24^24-29, 203.55.151.0/24^24-29, 203.56.243.0/24^24-29, 203.57.134.0/24^24-29, 203.61.76.0/24^24-29, 203.102.166.0/24^24-29, 203.108.77.0/24^24-29, 203.112.114.0/24^24-29, 203.118.136.0/24^24-29, 203.173.63.0/24^24-29, 203.206.161.0/24^24-29, 203.206.190.0/24^24-29, 203.206.196.0/24^24-29, 203.206.198.0/24^24-29, 203.206.201.0/24^24-29, 203.206.213.0/24^24-29, 203.206.214.0/24^24-29, 203.206.217.0/24^24-29, 203.215.12.0/24^24-29, 203.215.17.0/24^24-29, 203.215.31.0/24^24-29, 210.8.138.0/24^24-29, 210.55.110.0/24^24-29, 210.55.184.0/24^24-29 admin-c: RPA1-NZRR tech-c: RPA1-NZRR notify: rpsl-admin(a)nzix.net notify: nznog(a)list.waikato.ac.nz notify: noc(a)ihug.co.nz mnt-by: MAINT-NZRR-NZ changed: rpsl-admin(a)nzix.net 20070322 source: NZRR

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DNS TTLs: trademe and anz
by Simon Lyall 18 Mar '07

18 Mar '07

I'm doing a bit of DNS testing and I start noticing some weird results for a few domains. The two below appear to be specific problems since they are popular and I noticed them but I suspect there are others. The problem is that www.anz.co.nz and www.anz.com have TTLs of zero seconds. This means that *every* DNS look up for them takes either around 40 or 140ms (one server is closer/quicker than the other) since it is never cached. Similarly the TTL for www.trademe.co.nz (and www.oldfriends.co.nz) is just ten seconds so this must be constantly rechecked. Not as bad since their servers are in NZ but still there is a delay. Some companies (like google or yahoo) have very sophisticated systems that constantly check user performance and switch them from datacenter to datacenter in seconds if things start going slow. However unless your company has such a system (and very reliable and nearly DNS servers) then a TTL of a few minutes is good enough for manual updates to quickly propagate. Lower values than that will result in decreased performance for your customers. Even google and yahoo have TTLs of a minute or two. The scary thing is that both sites probably put a lot of time into making the actual pages load as fast as possible. -- 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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