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IPv6 Space at Public Exchanges
by Michael K. Smith 21 Apr '03

21 Apr '03

Hello: Does anyone know if there are plans for IPv6 address space to be made available at the various public exchanges for the purpose of IPv6 peering between existing IPv4 peers? Mike -- Michael K. Smith NoaNet 206.219.7116 (work) 206.579.8360 (cell) mksmith(a)noanet.net http://www.noanet.net

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Swamp reclamation (was: Fw: Dealing with ARIN.. my experiences & tips) (fwd)
by Bill Manning 20 Apr '03

20 Apr '03

Would the nanog community like an update? >From stephen(a)sprunk.org Sat Apr 19 18:11:42 2003 Message-ID: <00e701c306d9$c3464ca0$93b58742@ssprunk> From: "Stephen Sprunk" <stephen(a)sprunk.org> To: "Bill Manning" <bmanning(a)ISI.EDU> Subject: Swamp reclamation (was: Fw: Dealing with ARIN.. my experiences & tips) Date: Sat, 19 Apr 2003 19:56:30 -0500 X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook Express 6.00.2800.1106 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2800.1106 X-AntiVirus: scanned by AMaViS 0.2.1 Bill, Can you give me (or nanog) an update on your swamp reclamation efforts? It's been at least a couple years since I've heard anything. S Stephen Sprunk "God does not play dice." --Albert Einstein CCIE #3723 "God is an inveterate gambler, and He throws the K5SSS dice at every possible opportunity." --Stephen Hawking ----- End of forwarded message from Stephen Sprunk ----- -- --bill Opinions expressed may not even be mine by the time you read them, and certainly don't reflect those of any other entity (legal or otherwise).

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RE: DS3 Coax..
by McBurnett, Jim 20 Apr '03

20 Apr '03

I not only agree with these guys but I can give you an example.. One upon a time in a job a long long time ago, I worked on a data differential passing system based on Frequency Multiplexed microwave signaling to send information up to 1000 feet. We had a special interface on both ends, and a ground potential leveling circuit. The coax was very similiar to what is used for a DS3. In addition to the "data" coax we also ran a "grounding" strap. A number of times in the service of this equipment we had lightning strikes, power surges, and grounding failures. Everytime we had one of these events, there were major system failures. Now this system was quite a bit more expensive than a DS3 mux, and as I recall, none of our failures were under a solid 5 figure level. We finally retired this old animal in 1993 after 21 years of faithful headches. Thank you Uncle Sam..... That is a different story... It was replaced with a fiber system and a backup high-freq RF system. So with that thought of nostalga, I would defiantely go with a fiber link. Even if you have to put a DS3 router on the COLO side of the park and run Ethernet fiber across the parking lot..... If you do this, it will be a much better idea. and much more expanable. DS3 to a router- 100 Meg fiber... This will even allow some monitoring for errors across the pipe... Anyway... Jim > -----Original Message----- > From: David Lesher [mailto:wb8foz@nrk.com] > Sent: Saturday, April 19, 2003 9:20 PM > To: nanog list > Subject: Re: DS3 Coax.. > > > > Speaking on Deep Background, the Press Secretary whispered: > > > > > > Definately. > > > > You most emphatically do NOT want copper going across your > parking lot. > > Besides the danger from lightning strikes and other > electrostatic discharges > > you run the risk of ground potentials differing > significantly. You could > > wind up with a significant amount of current flowing across > the coax just to > > balance building grounds. (This is why telcos insist on a > single ground > > point and have that point connected to an array of ground > rods driven deep > > in the ground.) > > Agreed. > > Fiber is Your Friend [tm]. > > Ground loops and potential differences will not only have you > ripping your hair out, but you stand to lose DS-3 ports. Now > some guy told me that such costs a bit more than the RS-232 & > Ethernet ports I regularly see die, but that's likely just a rumor. > > > > > -- > A host is a host from coast to coast.................wb8foz(a)nrk.com > & no one will talk to a host that's close........[v].(301) 56-LINUX > Unless the host (that isn't close).........................pob 1433 > is busy, hung or dead....................................20915-1433 >

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Re: changing host records
by Gregory (Grisha) Trubetskoy 18 Apr '03

18 Apr '03

I was under the same misconception, which is why I was looking to change my host record at NSI even though the domain is registered with OpenSRS (and in desparation ended up posting to nanog). Apparently it is now up to the registrar of the matching domain to manage the host records, and luckily, OpenSRS does have an easy interface to it, but I take it this varies greatly from registrar to registrar. Grisha On Fri, 18 Apr 2003, Bruce Robertson wrote: > Hopefully the domain that the host record refers to is with NSI, otherwise > it is flatly impossible. I gave up trying to get NSI to change the IP address > of our third nameserver. Even after explaining to them that it doesn't > matter that GREATBASIN.NET is not one of their domains, including resorting > to drawing little pictures of how a relational database works, they couldn't > manage to change the IP address. So, the few domains we still have with > NSI have the wrong IP address in the third nameserver field. > > Good luck! > > -- > Bruce Robertson, President/CEO +1-775-348-7299 > Great Basin Internet Services, Inc. fax: +1-775-348-9412 > http://www.greatbasin.net > >

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Free traffic analysis tool
by Livio Ricciulli 18 Apr '03

18 Apr '03

I would not post this to nanog unless it was free. Reactive Network Solutions has made most of FloodGuard's functionality free to download. We are trying to increase awareness of the Internet flooding problem and at the same time help out the community. If you like this, perhaps you'll want more from us.. FloodGuard Alert detects and analyzes bandwidth anomalies and provides useful information to possibly stop the attacks. FloodGuard Alert "learns" normal traffic over time and has a rich Java GUI with unique traffic monitoring tools. Our web page has a sign-up form for FloodGuard Alert and more details. http://www.reactivenetwork.com

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Re: [Re: selective auto-aggregation]
by Joshua Smith 18 Apr '03

18 Apr '03

my company does it (not by my choice) - my downstreams do it regularly (mostly because they don't understand how/why to do something different) i have been told that it is that way for 'backup' purposes (they announce one or two /2[456]s to me with about 15 as prepends, and announce their entire /20, plus all of their longer prefixes, to another provider) they also told me that it will not be changed...apparently, as routers get more powerful and memory gets 'cheaper', they feel that it is not their responsibility to help maintain global routing table sizes Jack Bates <jbates(a)brightok.net> wrote: > > McBurnett, Jim wrote: > > Only 1 question: > > What about the companies that have a /24 out of the /20 0r /21 that are multi-homed? > > If the route rules are not carefully prepared the multi-homed customer then might be single-homed and tied to the upstream they got the IP's from. > > > > Thoughts? > > > > I was curious how much of the de-aggregation was due to multi-homed > companies requiring the longer prefixes. Are there companies that > actually announce their smaller routes despite controlling the shorter > prefix? What would be the benefit of doing so? > > -Jack > > "Walk with me through the Universe, And along the way see how all of us are Connected. Feast the eyes of your Soul, On the Love that abounds. In all places at once, seemingly endless, Like your own existence." - Stephen Hawking -

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RE: selective auto-aggregation
by McBurnett, Jim 18 Apr '03

18 Apr '03

Only 1 question: What about the companies that have a /24 out of the /20 0r /21 that are multi-homed? If the route rules are not carefully prepared the multi-homed customer then might be single-homed and tied to the upstream they got the IP's from. Thoughts? Jim >-----Original Message----- >From: bdragon(a)gweep.net [mailto:bdragon@gweep.net] >Sent: Thursday, April 17, 2003 3:56 PM >To: nanog(a)merit.edu >Subject: selective auto-aggregation > > > >I believe we're losing the aggregation war. More and more entities are >deaggregating, and not announcing their largest aggregates which makes >prefix-length filtering less effective. > >I'ld like to propose the concept of selective aggregation, whereby >a router can be configured to aggregate based upon rules. > >For example, if an RIR allocation boundary for a particular /8 is >/21, that routes which are longer than /21 could be aggregated to >/21 rather than discarded. Obviously, this would only be effective >facing one's transit, since aggregating a peer would violate most >peering agreements. In transit-free networks, this functionality would >not be useful. > >Similarly, the ability to auto-aggregate contiguous networks originated >by the same AS, which could be applied even to routes with lengths >shorter than an RIR boundary. This functionality could be useful >facing ones peers. > >This type of thing would need to be selective, since permitted >deaggregation (no-export tagged routes with meaningful MEDs) can >still be useful between entities which agree to such things. > >If we can, I'ld like to avoid a holy war on whether deaggregating >is someone's god given right, and stick to the premise that there >are networks who will enforce aggregation policies, and want to do so >in the most effective manner possible. > >

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DNS Servers
by Ray Burkholder 18 Apr '03

18 Apr '03

Is there anybody out there who is seeing that their DNS servers are going in and out of operation? We have 5 DNS servers, the service, not the server, is available/not-available/available. Am I imagining things or is something funky happening? Ray Burkholder

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RE: Fiber Converters, was RE: DS3 Coax..
by Bender, Andrew 18 Apr '03

18 Apr '03

Might be worth moving up to an honest-to-goodness ADM... there are very reasonable ones for point applications such as these, and they are made for continuous CO operation, unlike the wall-wart powered devices that seem to be so popular. A number of our customers have had some luck with these: http://www.oasystel.com/Products/Minimux155/Minimux155.htm Regards, Andrew Bender taqua.com > -----Original Message----- > From: Christopher J. Wolff [mailto:chris@bblabs.com] > Sent: Thursday, April 17, 2003 12:13 PM > To: nanog(a)merit.edu > Subject: Fiber Converters, was RE: DS3 Coax.. > > > > Andy, > > Thank you for bringing up fiber converters. I have a comment I was > trying to bring to the list that escaped this old man's memory. > > To the best of my recollection, I have not implemented a > fiber converter > that lasted more than say, 12 months. I've tried different > brands with > no luck. > > So, my question is, does a 'ruggedized' fiber/coax/X-baseT converter > exist? > > Regards, > Christopher J. Wolff, VP CIO > Broadband Laboratories, Inc. > http://www.bblabs.com > > > -----Original Message----- > From: owner-nanog(a)merit.edu [mailto:owner-nanog@merit.edu] On > Behalf Of > Andy Ellifson > Sent: Thursday, April 17, 2003 10:07 AM > To: Mike (meuon) Harrison; nanog(a)merit.edu > Subject: Re: DS3 Coax.. > > > 735 DS-3 cable has a specification max length of 225'. 734 DS-3 cable > has a specification max length of 450'. When you use this long cable > length, the mux that is providing the DS-3 needs to have the pads > removed (or provisioned) for a long cable run. > > Transition Networks (and others) make DS-3 fiber converters. They are > not cheap. This would be my preferred method as fiber > (especially OSP) > is much better suited for outdoor exposure and temperature changes. > > -Andy > > --- "Mike (meuon) Harrison" <meuon(a)highertech.net> wrote: > > > > > > I need to run a DS3 across our parking lot.. Seriously. > > > > What's the max length I can use coax for (I know, gotta use a GID), > > and what's the best brand/type of coax I can use? It'll be through > > innerduct.. Looking for some real world answers from people that do > > a LOT more of this than me.. (It might take 350-400 feet). > > > > > > > > > >

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Sorry, refresh my memory if possible.
by Drew Weaver 17 Apr '03

17 Apr '03

Does anyone know the URL of the AS search? I used to have it in my favorites. By AS search I mean you type in an AS number and it shows you all of the networks that are announcing/broadcasting it in the BGP table. Thanks, -Drew

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