April 2009 - Test - lists.nanog.org

Network topology
by Colin Alston 15 Nov '13

15 Nov '13

Hi all I'm considering trying to come up with some means to automatically detect a networks topology and draw pretty pictures. This is somewhat boring though if a network isn't well arranged with VLANs and q-tag trunk routers and so on (It will just look like a big cloud of junk connected off an assumed switch). Is there any kind of cunning trick to detect standard layer2 switches along a path without stuff like STP?

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Inventory and workflow management systems
by vijay gill 26 May '13

26 May '13

What software solution do people use for inventory management for things like riser/conduit drawdown, fiber inventory, physical topology store, CLR/DLR, x-connect, contracts, port inventory, etc. Any experiences in integrating workflow into those packages for work orders, modeling, drawdown levels, etc. /vijay

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Re: Re: What is the most standard subnet length on internet
by 정치영 03 Aug '09

03 Aug '09

Suresh, Yes, I guess my concern is close to the second meaning. It seems so simple. Currently annoucement of /24 seems to be okey, most upstream providers accept this. However I wonder if there is any ground rule based on any standard or official recommandation. If there is some standardized rule about prefix length to be annouced, I will make my bgp & IP allocation policy of each data center of my company, and I will be able to more fairly and squarely speak to my customer like this "You have to change your server's IP address if you want move your server to other place" chiyoung ============================================= Chi-Young Joung SAMSUNG NETWORKS Inc. Email: lionair(a)samsung.com Tel +82 70 7015 0623, Mobile +82 17 520 9193 Fax +82 70 7016 0031 ============================================= ------- Original Message ------- Sender : Suresh Ramasubramanian<ops.lists(a)gmail.com> Date : 2008-12-19 12:37 (GMT+09:00) Title : Re: What is the most standard subnet length on internet Chi Young, let me clarify one thing here .. Do you mean IP allocation as in subnet allocation, swipping in apnic or through a rwhois server etc? Or do you mean "what is the minimum subnet size I can announce on the internet and have other providers not drop it on the floor"? srs On Fri, Dec 19, 2008 at 8:10 AM, 정치영 <lionair(a)samsung.com> wrote: > Hi everyone, > > I'm going to rebuild IP allocation policy of my company and I am looking for some standard reference for my policy. > I have already studied some standard like RFC1518, RIPE181, RFC2050 and I got it is very important to maintain hierachy structure. > However, what I am really wondering is what is the most standard subnet length that always can be guaranteed through Internet. less than /24 bit ? > I could not find any documents about that, which subnet length is most proper value and pursue internet standard policy ? >

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Re: Re: What is the most standard subnet length on internet
by 정치영 26 Jul '09

26 Jul '09

Hi all, I appreciate many people gave me advices, Some of persons asked me about my questions, I'm sorry for that I couldn't reply to everyone. Because of your help, I could get many opinions and standards regarding IP allocation policy. by the way, in APNIC's IP allocation sizes policy, there is a comments like below. "Below are the minimum sizes for allocations and assignments, This information is provided at the request of the ISP community to assist in filtering policy decisions " Currently, is there any provider filtering routes under LIR's minimum allocation size such as /22 ? Best regards, ============================================= Chi-Young Joung SAMSUNG NETWORKS Inc. Email: lionair(a)samsung.com Tel +82 70 7015 0623, Mobile +82 17 520 9193 Fax +82 70 7016 0031 ============================================= ------- Original Message ------- Sender : Danny McPherson<danny(a)tcb.net> Date : 2008-12-21 02:42 (GMT+09:00) Title : Re: What is the most standard subnet length on internet On Dec 18, 2008, at 9:43 PM, 정치영 wrote: > Suresh, > > Yes, I guess my concern is close to the second meaning. > > It seems so simple. Currently annoucement of /24 seems to be okey, > most upstream providers accept this. > However I wonder if there is any ground rule based on any standard > or official recommandation. > If there is some standardized rule about prefix length to be > annouced, I will make my bgp & IP allocation policy of > each data center of my company, and I will be able to more fairly > and squarely speak to my customer like this > "You have to change your server's IP address if you want move your > server to other place" Some useful guidance is provided here (and in subsequent references) as well: An Architecture for IP Address Allocation with CIDR <http://tools.ietf.org/html/rfc1518> Classless Inter-Domain Routing (CIDR): an Address Assignment and Aggregation Strategy <http://tools.ietf.org/html/rfc1519> Network Renumbering Overview <http://tools.ietf.org/html/rfc2071> A Framework for Inter-Domain Route Aggregation <http://tools.ietf.org/html/rfc2519> HTH, -danny

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Minnesota to block online gambling sites?
by Ken Gilmour 05 May '09

05 May '09

Hi there, I am just wondering if anyone knows any more about the attempt by Minnesota to block online gambling companies other than what's publicly available (e.g. http://www.gambling911.com/gambling-news/minnesota-regulators-try-block-acc… Such as a list or the letter to the providers? Thank you! Ken

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Beware surfers: cyberspace is filling up
by J.D. Falk 01 May '09

01 May '09

'Experts predict that consumer demand, already growing at 60 per cent a year, will start to exceed supply from as early as next year because of more people working online and the soaring popularity of bandwidth-hungry websites such as YouTube and services such as the BBC’s iPlayer. It will initially lead to computers being disrupted and going offline for several minutes at a time. From 2012, however, PCs and laptops are likely to operate at a much reduced speed, rendering the internet an “unreliable toy”.' http://technology.timesonline.co.uk/tol/news/tech_and_web/the_web/article61… (I don't even know where to start.) -- J.D. Falk Return Path Inc http://www.returnpath.net/

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180/8 and 183/8 allocated to APNIC
by Leo Vegoda 30 Apr '09

30 Apr '09

-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 Hi, The IANA IPv4 registry has been updated to reflect the allocation of two /8 IPv4 blocks to APNIC in April 2009: 180/8 and 183/8. You can find the IANA IPv4 registry at: http://www.iana.org/assignments/ipv4-address-space/ipv4-address-space.xml http://www.iana.org/assignments/ipv4-address-space/ipv4-address-space.xml http://www.iana.org/assignments/ipv4-address-space/ipv4-address-space.txt Please update your filters as appropriate. Regards, Leo Vegoda Number Resources Manager, IANA -----BEGIN PGP SIGNATURE----- Version: 9.10.0.500 wj8DBQFJ+iBAvBLymJnAzRwRAq59AKDYIE9QGQAAJQDuqfQ5Qqo5YiZwWwCg1RNg wwnJkpL3STZw9fDOM7zUToM= =PtJl -----END PGP SIGNATURE-----

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one shot remote root for linux?
by Gadi Evron 30 Apr '09

30 Apr '09

This is one of them mysterious and rare cases where a non router OS vulnerability may affect network operations. Sometimes news finds us in mysterious yet obvious ways. HD Moore (respected security researcher) set a status which I noticed on my twitter: @hdmoore reading through sctp_houdini.c - one-shot remote linux kernel root - http://kernelbof.blogspot.com/ I asked him about it on IM, wondering if it is real: "looks like that but requires a sctp app to be running" Naturally, I retweeted. Signed, @gadievron

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Re: Beware surfers: cyberspace is filling up
by Scott Weeks 30 Apr '09

30 Apr '09

--- jdfalk-lists(a)cybernothing.org wrote: From: "J.D. Falk" <jdfalk-lists(a)cybernothing.org> 'Experts predict that consumer demand, already growing at 60 per cent a year, will start to exceed supply from as early as next year because of more people working online and the soaring popularity of bandwidth-hungry websites such as YouTube and services such as the BBC’s iPlayer. It will initially lead to computers being disrupted and going offline for several minutes at a time. From 2012, however, PCs and laptops are likely to operate at a much reduced speed, rendering the internet an “unreliable toy”.' http://technology.timesonline.co.uk/tol/news/tech_and_web/the_web/article61… (I don't even know where to start.) --------------------------------------------------------------- I know where to start: HAHAHAHAHAHAHAHA! <wipes tears of laughter at the stupidity of it from eyes> scott ps. I'm sure there's probably a PC way to say that, but I can't think of it at this time... ;-)

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RE: Important New Requirement for IPv4 Requests
by David Hubbard 30 Apr '09

30 Apr '09

From: Frank Bulk - iName.com [mailto:frnkblk@iname.com] > > It appears that ARIN wants to raise the IP addressing space > issue to the CxO level -- if it was interested in honesty, > ARIN would have required a notarized statement by the person > submitting the request. If ARIN really wants to get the > interest of CEOs, raise the price! > Raising the price won't help; there's already a huge amount of wasted address space by web hosts selling IP addresses to customers who need them solely for 'seo purposes' rather than allocating them in return for a reasonable technical justification. If ARIN raises the prices, it will hurt hosts who allocate their space in a responsible manner and those who don't will just charge more for the right to have one of these seo-friendly exclusive IP's that webmasters so righteously believe will make their sites #1 on google. We regularly lose business thanks to something that goes a little like this: "Can I get a block of 100 IP's for no particular reason?", no, "My old host let me, I just had to pay $100/month for it." One of Google's seo spam team members actually blogged on this topic after a nanog post I made about this a few years back, and I still send it to people asking for IP's for seo reasons and even then they don't believe me. If ARIN would enforce a technically justified use of IPv4 space that does not recognize "seo" as a valid reason, that would definitely help, otherwise web hosts will keep selling IP space to their customers at prices that let them keep buying more. And since the policy allows it currently, the CEO signing off on it will also be valid. David

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