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Stress Testing LAN/WAN
by Brian Feeny 05 Dec '08

05 Dec '08

I have the need to stress test a LAN and WAN. The primary concern is the WAN which is at most OC-3. The LAN would be an additional bonus if I could do that as well. I am familiar with tools such as those from Spirent and IXIA which are very expensive. I was wondering if someone has had to do this and can recommend some open source tools that would work well. I need to test a few different types of traffic, specifically trying to push traffic into various switch/ router policies to make sure everything is performing as expected. If anyone knows of some software that works well for this I would appreciate letting me know. Thanks, Brian

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network testbed (was: Stress Testing LAN/WAN)
by Jim Popovitch 04 Dec '08

04 Dec '08

Coincidentally, this week I was asked to specify current and next-gen equipment for a new network testbed at $DAYJOB. This lab would be used to test software used to monitor large networks. Specifically I need to setup an environment similar to that of large SPs, with emphasis on MPLS, STP, OSPF and BGP. What present and next-gen hardware would you recommend to include in such a testbed? I have vendor C pretty well covered, and I am really trying to look outside the box on this, but whatever you want to recommend is welcome. Private replies are also welcome, I can post a recap once I've received some feedback. Thanks, -Jim P. On Thu, Dec 4, 2008 at 17:23, Brian Feeny <bfeeny(a)mac.com> wrote: > > I have the need to stress test a LAN and WAN. The primary concern is the > WAN which is at most OC-3. The LAN would be an additional bonus if I could > do that as well. > I am familiar with tools such as those from Spirent and IXIA which are very > expensive. I was wondering if someone has had to do this and can recommend > some open source > tools that would work well. I need to test a few different types of > traffic, specifically trying to push traffic into various switch/router > policies to make sure everything is performing as > expected. If anyone knows of some software that works well for this I would > appreciate letting me know. > > Thanks, > > Brian > > >

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Re: Telecom Collapse?
by Scott Weeks 04 Dec '08

04 Dec '08

--- Valdis.Kletnieks(a)vt.edu wrote: --------------------- On Wed, 03 Dec 2008 22:59:00 PST, Paul Ferguson said: > I deliberated for a while on whether to send this, or not, but I figure it > might be of interest to this community: > > http://techliberation.com/2008/12/04/telecom-collapse/ The article goes on to quote some other source regarding Hawaiian Telecom's collapse. The *very first sentence* of the quote: "Customers initially had complained about poor service." I quit reading after that, as I could already see where this was heading. --------------------------------------------------------- As with many articles, there is a lot more here than meets the eye. The article is partially about my employer: Hawaiian Telcom. At least for the small telcos, like Hawaiian Telcom, this is important: "...we could free the phone companies to configure and price their basic phone service more efficiently, let them build broadband networks which can compete with the cable companies or anyone else and free taxpayers to rescue someone else." I never realized how hard core the regulatory hurdles are to ILEC competition until I came to work for one. The cable companies have no such barriers. scott

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NANOG45 Update
by Betty Burke 04 Dec '08

04 Dec '08

Hi Everyone:> On behalf of Merit, we look forward to our continued working relationship with the NANOG SC and PC who are working hard to bring a great program to NANOG45. Our Host, Terremark, continues to work hard to provide all of the additional support items to make everyone comfortable in Santo Domingo. A meeting that is sure to be unique, and one you will not want to miss! The Program Committee has been working very hard, a draft of the complete agenda is expected very early next week. A highlight of the agenda topics can be found at: http://nanog.org/meetings/nanog45/agenda.php The attendee list can be found at: https://nanog.merit.edu/registration/attendee.list.epl?MEETING_ID=45 Lastly, take advantage of the early registration fee, do consider getting your registration completed via: https://nanog.merit.edu/registration/ Of additional importance are our NANOG Sponsors. We appreciate the current economic impact on budgets. However, NANOG continues to be the premier event for national and international network operators, engineers, content providers, and of course the peering community; an event which provides sponsors low cost direct access to customers. Send your inquiry to nanong-support(a)nanog.org. We will work hard to design a NANOG45 package that works for your company and NANOG. Look forward to seeing many of you in late January 2009! As always, if you have any questions or concerns, feel free to contact Merit directly via nanog-support(a)nanog.org or any of the NANOG committees. All best. Betty Merit Network Inc. (734)527-5763

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[NANOG-announce] NANOG45 Update
by Betty Burke 04 Dec '08

04 Dec '08

Hi Everyone:> On behalf of Merit, we look forward to our continued working relationship with the NANOG SC and PC who are working hard to bring a great program to NANOG45. Our Host, Terremark, continues to work hard to provide all of the additional support items to make everyone comfortable in Santo Domingo. A meeting that is sure to be unique, and one you will not want to miss! The Program Committee has been working very hard, a draft of the complete agenda is expected very early next week. A highlight of the agenda topics can be found at: http://nanog.org/meetings/nanog45/agenda.php The attendee list can be found at: https://nanog.merit.edu/registration/attendee.list.epl?MEETING_ID=45 Lastly, take advantage of the early registration fee, do consider getting your registration completed via: https://nanog.merit.edu/registration/ Of additional importance are our NANOG Sponsors. We appreciate the current economic impact on budgets. However, NANOG continues to be the premier event for national and international network operators, engineers, content providers, and of course the peering community; an event which provides sponsors low cost direct access to customers. Send your inquiry to nanong-support(a)nanog.org. We will work hard to design a NANOG45 package that works for your company and NANOG. Look forward to seeing many of you in late January 2009! As always, if you have any questions or concerns, feel free to contact Merit directly via nanog-support(a)nanog.org or any of the NANOG committees. All best. Betty Merit Network Inc. (734)527-5763 _______________________________________________ NANOG-announce mailing list NANOG-announce(a)nanog.org http://mailman.nanog.org/mailman/listinfo/nanog-announce

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Re: Recommendation of Tools
by Anders Lindbäck 04 Dec '08

04 Dec '08

On 4 dec 2008, at 17.49, Daniel Hagerty wrote: > =?ISO-8859-1?Q?Anders_Lindb=E4ck?= <list-only(a)dnz.se> writes: > >> According to the 0.75 sorcecode ICMP is still the default prot >> used, =20 >> and the definition of MTR from bitwizards homepage disagress with >> you: > > Have you considered checking an actual authority on the subject > matter, like a running copy of mtr examined by a sniffer? > > Yes, ICMP is a default. No, it doesn't try to talk to > intermediates; it does the usual expanding TTL scope thing. > Which changes exactly nothing, but feel free to selectivly quote me out of context all you want. ------------------------------ Anders Lindbäck anders.lindback(a)dnz.se

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route-views maintenance
by David Meyer 04 Dec '08

04 Dec '08

Folks, We're planning a brief outage on route-views.routeviews.org at 1200 PST today (basically, upgrading processor and memory; thanks Chip Sharp). Thanks, Dave

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Yahoo DNS broken?
by Larry Daberko 04 Dec '08

04 Dec '08

I am unable to resolve www.yahoo.com. Tracing DNS back from the root servers shows that www.yahoo.com is a CNAME to www.wa1.b.yahoo.com and there are no A records for that hostname. Anyone have more details or a Yahoo contact? I'm unable to get to their webpage as it is :-) -Larry Daberko iServe Technologies $ dig @ns1.yahoo.com www.yahoo.com ; <<>> DiG 9.4.2 <<>> @ns1.yahoo.com www.yahoo.com ; (1 server found) ;; global options: printcmd ;; Got answer: ;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 56431 ;; flags: qr aa rd; QUERY: 1, ANSWER: 1, AUTHORITY: 2, ADDITIONAL: 2 ;; WARNING: recursion requested but not available ;; QUESTION SECTION: ;www.yahoo.com. IN A ;; ANSWER SECTION: www.yahoo.com. 300 IN CNAME www.wa1.b.yahoo.com. ;; AUTHORITY SECTION: wa1.b.yahoo.com. 300 IN NS yf1.yahoo.com. wa1.b.yahoo.com. 300 IN NS yf2.yahoo.com. ;; ADDITIONAL SECTION: yf1.yahoo.com. 1800 IN A 68.142.254.15 yf2.yahoo.com. 1800 IN A 68.180.130.15 ;; Query time: 15 msec ;; SERVER: 68.180.131.16#53(68.180.131.16) ;; WHEN: Wed Dec 3 15:34:09 2008 ;; MSG SIZE rcvd: 123 but looking up the host itself gives no answer $ dig @ns1.yahoo.com www.wa1.b.yahoo.com ; <<>> DiG 9.4.2 <<>> @ns1.yahoo.com www.wa1.b.yahoo.com ; (1 server found) ;; global options: printcmd ;; Got answer: ;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 34875 ;; flags: qr rd; QUERY: 1, ANSWER: 0, AUTHORITY: 2, ADDITIONAL: 2 ;; WARNING: recursion requested but not available ;; QUESTION SECTION: ;www.wa1.b.yahoo.com. IN A ;; AUTHORITY SECTION: wa1.b.yahoo.com. 300 IN NS yf1.yahoo.com. wa1.b.yahoo.com. 300 IN NS yf2.yahoo.com. ;; ADDITIONAL SECTION: yf1.yahoo.com. 1800 IN A 68.142.254.15 yf2.yahoo.com. 1800 IN A 68.180.130.15 ;; Query time: 15 msec ;; SERVER: 68.180.131.16#53(68.180.131.16) ;; WHEN: Wed Dec 3 15:35:07 2008 ;; MSG SIZE rcvd: 105

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RE: Recommendation of Tools
by Skywing 03 Dec '08

03 Dec '08

The problem is return path ICMP time exceeded from intermediate hops, and not the response from the final destination. – S -----Original Message----- From: Andre Gironda <andre(a)operations.net> Sent: Wednesday, December 03, 2008 16:35 To: nanog(a)nanog.org <nanog(a)nanog.org> Subject: Re: Recommendation of Tools On Wed, Dec 3, 2008 at 11:01 AM, Anders Lindbäck <list-only(a)dnz.se> wrote: > And using UDP will not really provide better results due to the same thing, > and IIRC Cisco from 12.0 has a standard setting of no more then 1 ICMP > Unreach per 500ms.. then connect to a udp service with something like nsping

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RE: Yahoo DNS broken?
by Mike Tancsa 03 Dec '08

03 Dec '08

At 03:40 PM 12/3/2008, Mills, Charles wrote: >Their other pages (finance.yahoo.com) and such seem to resolve ok. > >Wondering if it isn't part of a bigger problem because I got a complaint >that many sites >Were unreachable for a bit. www.yahoo.com seems to be a CNAME for wa1.b.yahoo.com and delegated to ... ;; Received 201 bytes from 192.41.162.30#53(L.GTLD-SERVERS.NET) in 39 ms www.yahoo.com. 300 IN CNAME www.wa1.b.yahoo.com. wa1.b.yahoo.com. 300 IN NS yf1.yahoo.com. wa1.b.yahoo.com. 300 IN NS yf2.yahoo.com. ;; Received 123 bytes from 68.180.131.16#53(ns1.yahoo.com) in 27 ms % host yf1.yahoo.com yf1.yahoo.com has address 68.142.254.15 Neither yf1.yahoo.com nor yf2 are responding to queries for me, but I can reach them 0[granite]% time host wa1.b.yahoo.com 68.142.254.15 ;; connection timed out; no servers could be reached 0.002u 0.000s 0:10.00 0.0% 0+0k 0+0io 0pf+0w 1[granite]% % ping -c 1 yf1.yahoo.com PING yf1.yahoo.com (68.142.254.15): 56 data bytes 64 bytes from 68.142.254.15: icmp_seq=0 ttl=56 time=28.282 ms --- yf1.yahoo.com ping statistics --- 1 packets transmitted, 1 packets received, 0% packet loss round-trip min/avg/max/stddev = 28.282/28.282/28.282/0.000 ms ---Mike

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