March 2007 - Test - lists.nanog.org

Re: TCP and WAN issue
by Philip Lavine 27 Mar '07

27 Mar '07

I have 2 data transmission scenarios: 1. Microsoft MSMQ data using TCP 2. "Streaming" market data stock quotes transmitted via a TCP sockets Philip ----- Original Message ---- From: William F. Maton Sotomayor <wmaton(a)ryouko.imsb.nrc.ca> To: Philip Lavine <source_route(a)yahoo.com> Sent: Tuesday, March 27, 2007 2:50:44 PM Subject: Re: TCP and WAN issue Hi Philip, We've run across this problem from one end of Canada to the other. As others have alluded to, the best you can hope for is to tweak the TCP window sizes up and increase the socket buffers to suit. However, if you're doing something over NetBIOS, it's turned out to be a total lost cause. Right now we're looking at the Steelheads from Riverbed to solve the NetBIOS problem. (The Steelheads do the dirty work of TCP tweaking on your behalf, so you don't have to, besides cacheing.) BTW, when you say stream, you're saying transfer of data other than a webcast, correct? On Tue, 27 Mar 2007, Philip Lavine wrote: > > This is the exact issue. I can only get between 5-7 Mbps. So the question is really what incremental performance gain do WAN accelerators/optimizers offer? Can registry/OS tweaks really make a significant difference because so far with all the "speed enhancements" I have deployed to the registry based on the some of the aforementioned sites I have seen no improvement. > > I guess I am looking for a product that as a wrapper can multiplex a single socket connection. > > Philip > > ----- Original Message ---- > From: Robert Boyle <robert(a)tellurian.com> > To: Philip Lavine <source_route(a)yahoo.com>; nanog <nanog(a)merit.edu> > Sent: Tuesday, March 27, 2007 2:04:20 PM > Subject: Re: TCP and WAN issue > > At 04:26 PM 3/27/2007, Philip Lavine wrote: >> I have an east coast and west coast data center connected with a >> DS3. I am running into issues with streaming data via TCP and was >> wondering besides hardware acceleration, is there any options at >> increasing throughput and maximizing the bandwidth? How can I >> overcome the TCP stack limitations inherent in Windows (registry >> tweaks seem to not functions too well)? > > You will have problems obtaining anything more than 5-7Mbit/s based > on 1500 byte Ethernet packets and a RTT latency of 70-90ms. You can > increase your window size or use Jumbo Ethernet frames. Almost all > GigE gear supports jumbo frames. I'm not sure of your application, > but without OS tweaks, each stream is limited to 5-7Mbit/s. You can > open multiple streams between the same two hosts or you can use > multiple hosts to transfer your data. You can utilize the entire DS3, > but not without OS TCP stack tweaks or a move to jumbo frames. You > can also use UDP or another connectionless packet method to move the > data between sites. Good luck. > > -Robert > > > > Tellurian Networks - Global Hosting Solutions Since 1995 > http://www.tellurian.com | 888-TELLURIAN | 973-300-9211 > "Well done is better than well said." - Benjamin Franklin > > > > > > > > ____________________________________________________________________________________ > Finding fabulous fares is fun. > Let Yahoo! FareChase search your favorite travel sites to find flight and hotel bargains. > http://farechase.yahoo.com/promo-generic-14795097 > wfms ____________________________________________________________________________________ 8:00? 8:25? 8:40? Find a flick in no time with the Yahoo! Search movie showtime shortcut. http://tools.search.yahoo.com/shortcuts/#news

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Linksys WAG200G - Information disclosure (fwd)
by Gadi Evron 27 Mar '07

27 Mar '07

I wonder what their security process is for other types of routers? ---------- Forwarded message ---------- Date: 20 Mar 2007 20:31:01 -0000 From: dniggebrugge(a)hotmail.com To: bugtraq(a)securityfocus.com Subject: Linksys WAG200G - Information disclosure Hi there, About 2 months ago I bought a wireless ADSL modem/router, the Linksys WAG200G. Just did some basic security checks and to my utter surprise the device responded with about all sensitive information it knows: * Product model * Password webinterface * Username PPPoA * Password PPPoA * SSID * WPA Passphrase I notified Linksys, got some regular support questions and was then assured my concerns would be forwarded to the product engineers. Some weeks later I tried again, same message, silence since then. My firmware version is 1.01.01, latest available for this type. 'Technical' info: Sent a packet to UDP port 916. Answer contains mentioned information. (LAN interface and Wireless interface) Greetings, Daniël Niggebrugge

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ATT / SBC Yahoo! DSL Technicians
by S. Ryan 27 Mar '07

27 Mar '07

Anyone here work for ATT / SBC Yahoo!? I can not for the life of me find anything online and what I do find online, I cannot seem to confirm with a human being that speaks the English language to save my life. It's a couple very simple questions, really. If any of you work for SBC / ATT Yahoo! DSL and could get in touch with me or put me in touch with one of their IP provisionier people, I would be forever greatful. I would think paying you folks more money (even if it's only a residential connection..) would make someone want to talk to me but obviously not. :( Thank you, SR

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April Fools' Day
by peter＠netpedant.com 27 Mar '07

27 Mar '07

The first true April Fools' Day RFC (748) is about to celebrate its 29th birthday. There was none last year. But Tom Limoncelli and I have collected all the RFCs together with some "bonus material." Bonus material includes commentary by Salus and Limoncelli, other funny and historical RFCs (the ones not published in April), plus forewords by Mike O'Dell, Scott Bradner, and Brad Templeton. Over 400 pages of delight! See //www.rfc-humor.com/ Peter

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Could it be possible to extend PPPoE Error code?
by Joe Shen 27 Mar '07

27 Mar '07

hi, We provide broadband access by ADSL. The cucurrent session number and access port is controled by radius server. E.g. an PPPoE account can ONLY be used with a designated access port, and current session of that account is limited to 3 or 5. If a subscriber dials with a username. mismatching username and password, illegal access port and exceeding current session number reach the same error code "691" on subscriber's computer. We want to identify the exact reason for customer complaint. So, it that possible to extend radius server and Broadband Access Server ( Juniper E series) to echo different error code for different reason. E.g. Error code 691 for wrong password Error code 851 for wrong access port Error code 852 for exceeding limit of concurrent session number .. regards Joe __________________________________ Yahoo! Movies - Search movie info and celeb profiles and photos. http://sg.movies.yahoo.com/

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power problems yesterday (3/26/07) at Level 3 in Atlanta
by Dorn Hetzel 27 Mar '07

27 Mar '07

I'm hearing from one of our carriers about a power problem at Level 3's Courtland Street facility in Atlanta yesterday that took them completely off-line. Anyone else hear or know anything about this event, if and when it happened? Any details? Regards, -Dorn

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Re: power problems yesterday (3/26/07) at Level 3 in Atlanta
by Dorn Hetzel 27 Mar '07

27 Mar '07

The problem was reported to be at the Courtland Street gateway. The folks that reported it to me are on AC power and stated that both their A and B feeds went dark. I have an Asterisk/IAX connection with one of their boxes there that reported about 30 minutes of no contact yesterday afternoon. I don't know about DC power but suspect it much less likely to have gone down. Still, it must have been something unusual to take out both A and B feeds of UPS AC... On 3/27/07, Todd White <twhite0001(a)gmail.com> wrote: > > We are in the old Wiltel facility in Norcross now a L3 facility and had no > issues. If you get some good answers directly off the list let me know as we > are looking to possibly move downtown. > > thanks > > -Todd > > > On 3/27/07, Dorn Hetzel <dhetzel(a)gmail.com> wrote: > > > > I'm hearing from one of our carriers about a power problem at Level 3's > > Courtland Street facility in Atlanta yesterday that took them completely > > off-line. > > > > Anyone else hear or know anything about this event, if and when it > > happened? Any details? > > > > Regards, > > > > -Dorn > > > > > > > >

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pps number of Omniswitch 6850
by ongbh＠ispworkshop.com 25 Mar '07

25 Mar '07

Hi Hi, Anyone got the pps number of omniswitch 6850 ? please reply privately.

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RE: outage
by Koch, Christian 23 Mar '07

23 Mar '07

I peer with google at a bunch of spots so I can't see anything, and everything looks ok.. Looks like global crossing issue route-server.phx1>trace 64.233.175.98 Type escape sequence to abort. Tracing the route to 64.233.175.98 1 ge4-1-0-226-1000M.ar4.PHX1.gblx.net (67.17.64.89) 0 msec 0 msec 0 msec 2 so3-0-0-2488M.ar3.PAO2.gblx.net (67.17.94.97) 20 msec 16 msec 20 msec 3 * * * 4 * * * 5 * * * 6 * * * |-----Original Message----- |From: Baart, Jeff [mailto:JBaart@talk.com] |Sent: Friday, March 23, 2007 5:38 PM |To: Koch, Christian; Jeff Baart; nanog(a)nanog.org |Subject: RE: outage | | |Out of the 3 IP's that have A records for google.com | |The only one that fails for me is (although no domain names |will work in a browser - only IP's) | |64.233.187.99 | |And only from our south east pops where we use Itc Deltacom |who uses Global Xing. | |batman# traceroute 64.233.167.99 |traceroute to 64.233.167.99 (64.233.167.99), 64 hops max, 40 |byte packets | 1 216-83-236-225.wan.networktel.net (216.83.236.225) 0.621 |ms 0.409 ms 0.610 ms | 2 216-83-239-210.wan.networktel.net (216.83.239.210) 1.352 |ms 0.664 ms 0.608 ms | 3 66.0.120.241 (66.0.120.241) 13.981 ms 12.001 ms 14.121 ms | 4 5-0-0-66.deltacom.net (66.0.0.5) 12.562 ms 12.167 ms 12.940 ms | 5 so-0-0-0.ar3.DAL1.gblx.net (64.208.169.141) 31.458 ms |30.561 ms 30.846 ms | 6 te2-1-10G.ar1.ATL2.gblx.net (67.17.108.5) 101.644 ms |218.952 ms 236.461 ms | 7 te2-1-10G.ar1.ATL2.gblx.net (67.17.108.5) 115.021 ms |216.940 ms 228.338 ms | 8 * * * | 9 * * * |10 64.233.175.98 (64.233.175.98) 63.708 ms 63.302 ms 62.690 ms |11 72.14.232.53 (72.14.232.53) 64.534 ms 64.168 ms 65.736 ms |12 64.233.175.42 (64.233.175.42) 64.796 ms 72.14.232.74 |(72.14.232.74) 64.210 ms 64.233.175.42 (64.233.175.42) 69.647 ms | |13 py-in-f99.google.com (64.233.167.99) 65.109 ms 64.547 ms | 64.551 ms batman# traceroute 64.233.187.99 traceroute to |64.233.187.99 (64.233.187.99), 64 hops max, 40 byte packets | | 1 216-83-236-225.wan.networktel.net (216.83.236.225) 0.922 |ms 3.517 ms 0.469 ms | 2 216-83-239-210.wan.networktel.net (216.83.239.210) 0.461 |ms 0.466 ms 0.984 ms | 3 66.0.120.241 (66.0.120.241) 12.279 ms 12.472 ms 12.538 ms | 4 5-0-0-66.deltacom.net (66.0.0.5) 11.984 ms 11.943 ms 14.339 ms | 5 so-0-0-0.ar3.DAL1.gblx.net (64.208.169.141) 31.577 ms |31.821 ms 31.826 ms | 6 te2-1-10G.ar1.ATL2.gblx.net (67.17.108.5) 69.674 ms |236.217 ms 247.271 ms | 7 te2-1-10G.ar1.ATL2.gblx.net (67.17.108.5) 178.381 ms |217.020 ms 351.692 ms | 8 * * * | | | | |From our Michigan POP's (where we use Level 3 and XO) - we |don't have the issues | | |--- JUNOS 6.4R1.6 built 2004-07-28 04:31:42 UTC | |{master} |jbaart@CR01-MELROSE01-M20> traceroute 64.233.187.99 traceroute |to 64.233.187.99 (64.233.187.99), 30 hops max, 40 byte packets | | 1 reverse.118.255.114.209.static.ldmi.com (209.114.255.118) |10.872 ms 201.010 ms 2.240 ms | MPLS Label=21 CoS=0 TTL=1 S=1 | 2 core01-s8-1-1.cmh.oh.ldmi.net (209.114.255.242) 18.802 ms | 18.884 ms 18.563 ms | 3 clevoh1wce1-atm4-0-0-1.wcg.net (65.77.88.73) 22.313 ms |24.840 ms 22.224 ms | 4 clevoh1wce2-gige6-0.wcg.net (65.77.88.18) 22.529 ms |22.376 ms 22.541 ms | 5 nycmny2wcx2-slot3-0.wcg.net (64.200.240.74) 35.196 ms |36.181 ms 35.552 ms | 6 hrndva1wcx2-pos1-0-oc192.wcg.net (64.200.210.178) 87.901 |ms 44.301 ms 230.123 ms | 7 hrndva1wcx3-pos4-0-oc192.wcg.net (64.200.89.122) 41.598 |ms 41.160 ms 41.119 ms | 8 drvlga1wct1-atm12-0-0-4.wcg.net (64.200.123.49) 191.327 |ms 53.669 ms 53.248 ms | 9 atlnga6lce1-pos5-0.wcg.net (64.200.127.62) 53.045 ms |53.122 ms 52.845 ms 10 72.14.197.173 (72.14.197.173) 53.760 |ms 54.118 ms 54.246 ms | |11 64.233.174.86 (64.233.174.86) 53.048 ms 53.701 ms 53.233 ms |12 209.85.248.59 (209.85.248.59) 55.167 ms 63.872 ms |72.14.236.175 (72.14.236.175) 59.177 ms |13 216.239.49.226 (216.239.49.226) 57.620 ms 57.030 ms 57.495 ms |14 jc-in-f99.google.com (64.233.187.99) 54.470 ms 55.172 ms | 54.742 ms | | | |And | | |Type escape sequence to abort. |Tracing the route to py-in-f99.google.com (64.233.167.99) | | 1 core03-vlan100.dtw.mi.ldmi.net (209.114.255.34) 124 msec |184 msec 4 msec | 2 t3-3-2-0.ar2.DET1.gblx.net (64.208.170.145) 8 msec 4 msec 8 msec | 3 pos7-0-0-10G.ar2.CHI2.gblx.net (67.17.105.110) 8 msec 8 msec 8 msec | 4 google-1.ar2.CHI2.gblx.net (64.215.195.178) 8 msec 4 msec 8 msec | 5 216.239.46.1 8 msec 8 msec 8 msec | 6 72.14.232.53 8 msec | 66.249.94.133 8 msec 20 msec | 7 64.233.175.26 8 msec | 64.233.175.42 8 msec 8 msec | 8 py-in-f99.google.com (64.233.167.99) 8 msec 8 msec 8 msec | | | | |-----Original Message----- |From: Koch, Christian [mailto:ckoch@qualitytech.com] |Sent: Friday, March 23, 2007 3:47 PM |To: Jeff Baart; nanog(a)nanog.org |Subject: RE: outage | |Can you be more specific? | | | ||-----Original Message----- ||From: owner-nanog(a)merit.edu [mailto:owner-nanog@merit.edu] On |Behalf Of ||Jeff Baart ||Sent: Friday, March 23, 2007 4:41 PM ||To: nanog(a)nanog.org ||Subject: outage || ||Anyone know if there is just some sort of Google hosting |outage ... or ||if there is a larger Tier 1 issue going on this afternoon |? || || || ||Thanks. || || | |

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outage
by Jeff Baart 23 Mar '07

23 Mar '07

Anyone know if there is just some sort of Google hosting outage ... or if there is a larger Tier 1 issue going on this afternoon ? Thanks.

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