Re: Rasberry pi - high density

The problem is, I can get more processing power and RAM out of two 10RU blade chassis and only needing 64 10G ports... 32 x 256GB RAM per blade = 8.1TB 32 x 16 cores x 2.4GHz = 1,228GHz (not based on current highest possible, just using reasonable specs) Needing only 4 QFX5100s which will cost l

Rasberry pi - high density

So I just crunched the numbers. How many pies could I cram in a rack? Check my numbers? 48U rack budget 6513 15U (48-15) = 33U remaining for pie 6513 max of 576 copper ports Pi dimensions: 3.37 l (5 front to back) 2.21 w (6 wide) 0.83 h 25 per U (rounding down for Ethernet cable space etc) =

RE: Thousands of hosts on a gigabit LAN, maybe not

On 2015-05-08 18:20, Phil Bedard wrote: The real answer to this is being able to cram them into a single chassis which can multiplex the network through a backplane. Something like the HP Moonshot ARM system or the way others like Google build high density compute with integrated Ethernet switchi

Re: Thousands of hosts on a gigabit LAN, maybe not

On 9 May 2015, at 1:53, John Levine wrote: What's the rule of thumb for number of hosts per switch, cascaded switches vs. routers, and whatever else one needs to design a dense network like this? Most of the major switch vendors have design guides and other examples like this available (thi

Any AWS folk on the list?

Trying get a cross-connect up with you in SV5 and your customer support folk are unable to call Equinix to trounleshoot. If you could ping me offlist, it would be greatly appreciated. Thank You, Mike

Re: Thousands of hosts on a gigabit LAN, maybe not

On Fri, May 8, 2015 at 5:19 PM, Jima wrote: Dang. The more I think about this project, the more expensive it sounds. Naw, just use WiFi. ;) -- Joe Hamelin, W7COM, Tulalip, WA, 360-474-7474

Re: Updated prefix filtering

Not sure if you missed it.. there was a discussion on this topic in the recent past... I am taking the liberty of re-posting below.. you may find it useful. -- Hi Freddy, As Paul has mentioned, you could check the David's project - SIR, look at his presentation: https://www.y

Re: Thousands of hosts on a gigabit LAN, maybe not

On 2015-05-08 12:53, John Levine wrote: What's the rule of thumb for number of hosts per switch, cascaded switches vs. routers, and whatever else one needs to design a dense network like this? TIA I won't pretend to know best practices, but my inclination would be to connect the devices to 4

Re: Thousands of hosts on a gigabit LAN, maybe not

On Fri, May 8, 2015 at 11:53 AM, John Levine wrote: > Some people I know (yes really) are building a system that will have > several thousand little computers in some racks. Each of the > computers runs Linux and has a gigabit ethernet interface. Though a bit off-topic I ran in to this project

RE: Thousands of hosts on a gigabit LAN, maybe not

The real answer to this is being able to cram them into a single chassis which can multiplex the network through a backplane. Something like the HP Moonshot ARM system or the way others like Google build high density compute with integrated Ethernet switching. Phil -Original Message-

Updated prefix filtering

Best example I’ve found is located at http://jonsblog.lewis.org/ I too ran out of space, Brocade, not Cisco though, and am looking to filter prefixes. did anybody do a more recent or updated filter list since 2008 ? Offlist is fine. Oh and happy friday to all.

BGP Update Report

BGP Update Report Interval: 30-Apr-15 -to- 07-May-15 (7 days) Observation Point: BGP Peering with AS131072 TOP 20 Unstable Origin AS Rank ASNUpds % Upds/PfxAS-Name 1 - AS23752 272041 5.6%2267.0 -- NPTELECOM-NP-AS Nepal Telecommunications Corporation, Intern

The Cidr Report

This report has been generated at Fri May 8 21:14:42 2015 AEST. The report analyses the BGP Routing Table of AS2.0 router and generates a report on aggregation potential within the table. Check http://www.cidr-report.org/2.0 for a current version of this report. Recent Table History Date

[NANOG-announce] NANOG 64 Reminders

NANOGers, As we continue our final preparations in support of NANOG 64, June 1-3, 2015 in San Francisco, let me share the following highlights and reminders: - The NANOG 64 Agenda is posted, and u

Re: Thousands of hosts on a gigabit LAN, maybe not

On 2015-05-08 13:53, John Levine wrote: Some people I know (yes really) are building a system that will have several thousand little computers in some racks. How many racks? How many computers per rack unit? How many computers per rack? (How are you handling power?) How big is each computer?

Re: Thousands of hosts on a gigabit LAN, maybe not

On 05/08/2015 04:17 PM, Niels Bakker wrote: * lists.na...@monmotha.net (Brandon Martin) [Fri 08 May 2015, 21:42 CEST]: [1] Purely as an example, you can cram 3x Brocade MLX-16 chassis into a 42U rack (with 0RU to spare). That gives you 48 slots for line cards. You really can't. Cables need t

Re: Thousands of hosts on a gigabit LAN, maybe not

Morrow's comment about the ARMD WG notwithstanding, there might be some useful context in https://tools.ietf.org/html/draft-karir-armd-statistics-01 Cheers, -Benson Christopher Morrow May 8, 2015 at 12:19 PM consider the pain of also ipv6's link-local gamery.

RE: Thousands of hosts on a gigabit LAN, maybe not

The first thing that came to mind was "Bitcoin farm!" then "Ask Bitmaintech" and then "I'd be more worried about the number of fans and A/C units". I promise, no bitcoins involved. R's, John

Re: Thousands of hosts on a gigabit LAN, maybe not

* lists.na...@monmotha.net (Brandon Martin) [Fri 08 May 2015, 21:42 CEST]: [1] Purely as an example, you can cram 3x Brocade MLX-16 chassis into a 42U rack (with 0RU to spare). That gives you 48 slots for line cards. You really can't. Cables need to come from the top, not from the sides, or

RE: Thousands of hosts on a gigabit LAN, maybe not

Agree with many of the other comments. Smaller subnets (the /23 suggestion sounds good) with L3 between the subnets. The first thing that came to mind was "Bitcoin farm!" then "Ask Bitmaintech" and then "I'd be more worried about the number of fans and A/C units". Brian > Date: Fri, 8 M

Re: Thousands of hosts on a gigabit LAN, maybe not

>> to have 10,000 entries or more in its ARP table. > >Agreed. :) You don't really want 10,000 entries in a routing FIB >table either, but I was seriously encouraged by the work going >on in linux 4.0 and 4.1 to improve those lookups. One obvious way to deal with that is to put some manageable num

Re: Thousands of hosts on a gigabit LAN, maybe not

Forgot to mention - you might also want to check out Beowulf clusters - there's an email list at http://www.beowulf.org/ - probably some useful info in the list archives, maybe a good place to post your query. Miles Miles Fidelman wrote: John Levine wrote: Some people I know (yes really) are

RE: Thousands of hosts on a gigabit LAN, maybe not

You may want to look at CLOS / leaf/spine architecture. This design tends to be optimized for east-west traffic, scales easily as bandwidth needs grow, and keeps thing simple, l2/l3 boundry on the ToR switch, L3 ECMP from leaf to spine. Not a lot of complexity and scale fairly high on both lea

Re: Thousands of hosts on a gigabit LAN, maybe not

Linux has a (configurable) limit on the neighbor table. I know in RHEL variants, the default has been 1024 neighbors for a while. net.ipv4.neigh.default.gc_thresh3 net.ipv4.neigh.default.gc_thresh2 net.ipv4.neigh.default.gc_thresh1 net.ipv6.neigh.default.gc_thresh3 net.ipv6.neigh.default.gc_thr

Re: Thousands of hosts on a gigabit LAN, maybe not

John Levine wrote: Some people I know (yes really) are building a system that will have several thousand little computers in some racks. Each of the computers runs Linux and has a gigabit ethernet interface. It occurs to me that it is unlikely that I can buy an ethernet switch with thousands of

Re: Thousands of hosts on a gigabit LAN, maybe not

On 05/08/2015 02:53 PM, John Levine wrote: Some people I know (yes really) are building a system that will have several thousand little computers in some racks. Each of the computers runs Linux and has a gigabit ethernet interface. It occurs to me that it is unlikely that I can buy an ethernet

Re: Thousands of hosts on a gigabit LAN, maybe not

- The more switches a packet has to go through, the higher the latency, so your response times may deteriorate if you cascade too many switches. Legend says up to 4 is a good number, any further you risk creating a big mess. - The more switches you add, the higher your bandwidth utilized by broadc

Re: Thousands of hosts on a gigabit LAN, maybe not

On Fri, May 8, 2015 at 11:53 AM, John Levine wrote: > Some people I know (yes really) are building a system that will have > several thousand little computers in some racks. Very cool-ly crazy. > Each of the > computers runs Linux and has a gigabit ethernet interface. It occurs > to me that it

Re: Thousands of hosts on a gigabit LAN, maybe not

On Fri, May 8, 2015 at 2:53 PM, John Levine wrote: > Some people I know (yes really) are building a system that will have > several thousand little computers in some racks. Each of the > computers runs Linux and has a gigabit ethernet interface. It occurs > to me that it is unlikely that I can b

RE: Thousands of hosts on a gigabit LAN, maybe not

Sounds interesting. I wouldn't do more than a /23 (assuming IPv4) per subnet. Join them all together with a fast L3 switch. I'm still trying to visualize what several thousand tiny computers in a single rack might look like. Other than a cabling nightmare. 1000 RJ-45 switch ports is a good

Re: OSP list?

I think you did! It was online earlier - their magazine is online too: http://digital.ospmag.com/#&pageSet=0&contentItem=0 They do have a directory issue for their magazine ... On May 8, 2015, at 2:51 PM, chris wrote: > I am getting site offline... Did we kill it? Lol > > On Fri, May 8, 2015

Thousands of hosts on a gigabit LAN, maybe not

Some people I know (yes really) are building a system that will have several thousand little computers in some racks. Each of the computers runs Linux and has a gigabit ethernet interface. It occurs to me that it is unlikely that I can buy an ethernet switch with thousands of ports, and even if I

Re: OSP list?

I am getting site offline... Did we kill it? Lol On Fri, May 8, 2015 at 1:34 PM, Ilissa Miller wrote: > This could be a good resource - may have to dig a little: > http://www.ospmag.com/ > > > On May 8, 2015, at 1:18 PM, Josh Reynolds wrote: > > > WISPA has a fiber list for FTTx and hybrid deplo

Mailing list messages with attachments (was Re:)

Be advised that I have made changes to my personal spam traps to bin mailing list messages with attachments. -- sed quis custodiet ipsos custodes? (Juvenal)

Re:

Be advised that I have made changes to my personal spam traps to bin mailing list messages with attachments. -- sed quis custodiet ipsos custodes? (Juvenal)

Weekly Routing Table Report

This is an automated weekly mailing describing the state of the Internet Routing Table as seen from APNIC's router in Japan. The posting is sent to APOPS, NANOG, AfNOG, AusNOG, SANOG, PacNOG, CaribNOG and the RIPE Routing Working Group. Daily listings are sent to bgp-st...@lists.apnic.net For hi

Re: OSP list?

This could be a good resource - may have to dig a little: http://www.ospmag.com/ On May 8, 2015, at 1:18 PM, Josh Reynolds wrote: > WISPA has a fiber list for FTTx and hybrid deployments. It's not the most > active thing in the world, but there can still be good stuff on there. > > Josh Reyn

Re: IP DSCP across the Internet

On 5/7/15 3:05 AM, Mark Tinka wrote: And this is what sales and marketing droids don't get - so-called "Premium Internet" products abound that don't really mean anything. The competition that offer these products are basically hoping nothing happens, and that when it does, it seems as palatable

Re: OSP list?

WISPA has a fiber list for FTTx and hybrid deployments. It's not the most active thing in the world, but there can still be good stuff on there. Josh Reynolds CIO, SPITwSPOTS www.spitwspots.com On 05/08/2015 08:57 AM, Dave Allen wrote: Does anyone know of a mailing list or group devoted to the

Re: OSP list?

+1 On Fri, May 8, 2015 at 1:02 PM, chris wrote: > I would also be interested > On May 8, 2015 12:59 PM, "Dave Allen" wrote: > > > Does anyone know of a mailing list or group devoted to the topic of > outside > > plant fiber network design and construction? > > >

Re: OSP list?

I would also be interested On May 8, 2015 12:59 PM, "Dave Allen" wrote: > Does anyone know of a mailing list or group devoted to the topic of outside > plant fiber network design and construction? >

OSP list?

Does anyone know of a mailing list or group devoted to the topic of outside plant fiber network design and construction?

Re: Huawei and ZTE Routers

You could try cross posting to UKNOG since BT use Huawei in their DSLAMs. http://lists.uknof.org.uk/cgi-bin/mailman/listinfo/uknof/ On 7 May 2015 21:18, "ML" wrote: > On 5/7/2015 2:25 PM, Daniel Corbe wrote: > >> Colton Conor writes: >> >> The other thread about the Alcatel-Lucent routers has