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Re: SMS
by Richard.E.Brown＠dartware.com 22 Sep '09

22 Sep '09

--- Shane Ronan wrote: On that same note, can someone point me in the direction of an SMS gateway service? I would like to be able to send SMS messages from my monitoring systems, but I am unsure about how to go about it. --- end of quote --- There are several ways to do this: - Open source software like Gammu (http://cihar.com/gammu/) can send SMS messages through a USB or RS232 attached mobile phone or cellular modem. - We've had good luck with the MultiTech MultiModem GPRS, model MTCBA-G-U-F2 (USB) and Multitech GPRS MTCBA-G-F4 and Wavecomm RS-232 GSM (RS-232) modems. - Many monitoring/management packages have built-in or add-on SMS sending utilities. - You may not want to rely on the cellular carrier's e-mail-to-SMS gateway, either because of connectivity problems or the cell carrier's delay/reliability problems. - There's also a kludge that's good for a "disaster notification" that simply rings a phone when something really bad happens. :-) Basically, the system uses its numeric pager/TAP software to dial through an analog modem and a POTS line and ring your phone/cell. The CallerID tells you who's calling, even there's no message. There's a KB article at the InterMapper site describing this is at... http://forums.dartware.com/viewtopic.php?t=913 Rich Brown richard.e.brown(a)dartware.com Dartware, LLC http://www.dartware.com 66-7 Benning Street Telephone: 603-643-9600 West Lebanon, NH 03784-3407 Fax: 603-643-2289

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Router for a file hosting service
by Vasil Kolev 22 Sep '09

22 Sep '09

Hi all, I've been banging my head for a while and finally decided to ask for a recommendation for a router for a somewhat weird situation. What we currently have is a number of 10G ethernet ports to one carrier, just switches and nothing more, the carrier is the gw for all the servers we have (everything is one big VLAN). What I need is something that can handle something like 24 10gbit ports - 10-12 to switches with the serving equipment (each one of them pushing around 8-9Gbit) and on the other side connected to a few ISPs, some of them with full tables, some of them just peering, and to push the 80-100Gbps around. (all traffic is TCP, live data says 8.4Gbps is around 1mpps) Now this seems pretty straightforward, but there's a twist. Because of the nature of the app we need to be able to do some policy routing - the devices on the back should be able to set something in the packet (like the ToS field), and the outbound route preference to be picked based on that. We'll also need to push to the routes some idea on what to prefer for specific destinations (because we have some pretty good metrics on the backend on the packet loss to each destination). There's also the small issue of scrubbing the packets of the marker I've set on the backend, not to leak it, because it seems some people tend to do weird stuff with prioritization because of it (we had one case with BT, i think). Doing these two issues at wire speed doesn't seem to be covered in the documentation, or at least in what I found. We've looked into cisco 7609 for this, but I've already read enough on this list that made me a bit wary of it (and after all the reading I'm still not sure how well would it handle the policy routing issue and the rest of the nasty things we're planning for it. Any ideas or pointers? -- Regards, Vasil Kolev

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Google Pagerank and "Class-C Addresses"
by Sebastian Wiesinger 22 Sep '09

22 Sep '09

Hello Nanog, I'm looking into a weird request which more and more customers have. They want "different Class C addresses", by which they mean IPs in different /24 subnets. The apparent reason for this is that Google will rank links from different /24 higher then links from the same /24. So it's a SEO thingy. I googled a bit and found pages after pages of FUD and such great things as the "Class C Checker": "This free Class C Checker tool allows you to check if some sites are hosted on the same Class C IP Range." My question is: Is there any proof that Google does differentiate between /24s, or even better is there any proof that this isn't the case? I will not give a customer space from different address blocks just because he read it in a SEO magazine. Perhaps someone from Google itself can answer this question? Also how do you handle such requests? I expect I'm not the only one who gets them. Regards, Sebastian -- New GPG Key: 0x93A0B9CE (F4F6 B1A3 866B 26E9 450A 9D82 58A2 D94A 93A0 B9CE) Old GPG Key-ID: 0x76B79F20 (0x1B6034F476B79F20) 'Are you Death?' ... IT'S THE SCYTHE, ISN'T IT? PEOPLE ALWAYS NOTICE THE SCYTHE. -- Terry Pratchett, The Fifth Elephant

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Cisco 7600 vs ASR 9000
by Nick Colton 22 Sep '09

22 Sep '09

I work for a small CLEC, we have been doing FTTP for 5 years now but are getting ready to update our core network and introduce IPTV services. Cisco has been recommending the Cisco 7600 as our core router. My concern is that cisco told us that in the event of an RSP failover the 7600 could take up to 30 seconds to begin routing packets again, this seems wrong to me since my old Extreme Networks BD 6808 can do failovers and rebuild route tables in under 5 seconds but?? More recently I have been reading up on the ASR 9000 however and it appears that it would be better sized for our company than the 7600. A few questions I have for the group. 1. Has anyone used the ASR 9000 in place of a Cisco 7600? 2. Is the ASR 9000 Carrier ready? Meaning 5x9's of availability, few component failures, solid software...etc 3. Has anyone had issues where it took the 7600 30 seconds to start routing again after an RSP failover? Thanks, Nick

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Re: SMS
by Shaun Rossi 22 Sep '09

22 Sep '09

"Short-codes" it is! Thanks everyone, -Shaun Shaun Rossi Fidalia Networks Inc tel. (905) 271-0037 x 111 1-866-FIDALIA (343-2542) x 111 fax. (905) 271-1036 1 Port Street East - Second Floor Mississauga, Ontario L5G 4N1 Canada

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TDM data analyzer
by jp＠seminte.lt 22 Sep '09

22 Sep '09

Hello fellow NANOGers. Slightly offtopic, but I would greatly appreciate your suggestions. For my telecommunications engineering degree I am designing a TDM data analyzer, and I need suggestion, what you would like in an appliance like that. Right now my idea is that it should be a transparent device that plugs in between two E1/T1/J1 devices and then connect to FastEthernet for data uplink. All data traveling between two devices is sent to central server that can accept data from one or more capture devices. End user (i.e. NANOGer debugging a problem) has a program to connect to data acquisition server and can see decoded Q921/Q931 signaling data and to play-out what's happening in any one of voice channels. BERT tester and signal level indication with remote fault monitoring and logging would be included also. End user will have ability to record voice data with supplemental information too. So my question to the community is what other features you would like to see in a device? And most of all - if you had a device like that would you find it useful? All replies off list greatly appreciated. I would like to ask people to forward this email to colleagues that work with voice systems or to a voice operators group if you are a member of one. Thanks a lot, Justin ---------------------------------------------------------------- This message was sent using IMP, the Internet Messaging Program.

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Re: SA pigeon 'faster than broadband'
by Scott Weeks 22 Sep '09

22 Sep '09

--- william.allen.simpson(a)gmail.com wrote: From: William Allen Simpson <william.allen.simpson(a)gmail.com> http://newsvote.bbc.co.uk/mpapps/pagetools/print/news.bbc.co.uk/2/hi/africa… Update needed for RFC 1149 (1 April 1990), A Standard for the Transmission of IP Datagrams on Avian Carriers ---------------------------------------------------- Note this part, though. ""Several recommendations have, in the past, been made to the customer but none of these have, to date, been accepted," Telkom's Troy Hector told South Africa's Sapa news agency in an e-mail." It would be nice to know what those recommendations were... scott

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RE: Google Pagerank and "Class-C Addresses"
by David Hubbard 22 Sep '09

22 Sep '09

From: Scott Howard [mailto:scott@doc.net.au] > > > This is not true. It's been well documented that PageRank > uses a number of > metrics, probably the most important of them (in terms of > ranking) being the > number of links to a page or site (and I believe, the PageRank of the > pages/websites those links come from). > > One of my websites has consistently been in the top 10 or at > worst top 20 > results when searching for the word "megapixel" despite the word only > appearing on the resulting page about 4 times - if it was > simply content > based there's no way that site would be ranked so highly. Matt Cutts from Google has publicly stated this to not be true; if it is true and he was lying, then everyone hosted at a large provider would be penalized for doing so from an SEO perspective since the likelihood of being on a 'close' network to similar content would be high when you've got hosts running hundreds of thousands of name-based sites off one /24. Actually he stated this to not be true in response to a thread I started on this list about this subject several years ago when I was complaining about Google causing IPv4 exhaustion due to people asking hosts, with some willing, to give them a bunch of IP's on different /24's for SEO purposes when there is no technical justification for it. We've had customers leave and go elsewhere after refusing to give them IP's they didn't need because they were convinced by some SEO 'expert' that they need a bunch of doorway sites on a variety of /24's. If someone is willing to leave their host over that, there are certainly going to be hosts willing to dish up IP's for SEO reasons, and the waste of addresses continues. David

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subnet aggregation script
by Ric Moseley 21 Sep '09

21 Sep '09

Does anyone know of a tool/script that can aggregate subnets feed to it via command line? Meaning if I give it multiple /30s (or any size subnet) it will scrunch them together. Example: #aggregate_subnets.script 192.168.0.0/30 192.168.0.4/30 10.0.0.16/29 10.0.0.24/29 #192.168.0.0/29 10.0.0.16/28 Thanks. Ric Moseley VP of Engineering rmoseley(a)softlayer.com 214-442-0555 direct 972-989-7813 cell 214-442-0600 office 866-398-7638 toll-free 214-442-0601 fax 6400 International Parkway, Suite 2000 Plano, TX 75093 http://www.softlayer.com The contents of this email message and any attachments are confidential and are intended solely for the addressee. The information may also be legally privileged. This transmission is sent in trust for the sole purpose of delivery to the intended recipient. If you have received this transmission in error; any use, reproduction or dissemination of this transmission is strictly prohibited. If you are not the intended recipient, please immediately notify the sender by reply email and delete this message and all associated attachments.

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Re: NEW ON THE BLOCK
by bmanning＠vacation.karoshi.com 21 Sep '09

21 Sep '09

welcome to North America.. :) --bill On Mon, Sep 21, 2009 at 05:26:03PM -0000, Noah Adablah wrote: > > Hello, > I am new on the block. > > Kind regards, > > Noah Adablah > RF Systems Manager > Africa Online Holdings Ltd > Tel : +233-21-211823 > Cell: + 233 246541404 > Email: <mailto:noahada@africaonline.com.gh> noahada(a)africaonline.com.gh > AIM: noahadablah > cid:image001.jpg@01C8D62B.E2CE7C60 > > A Member of the Telkom South Africa Group > > Africa Online Disclaimer and Confidentiality Note does not apply to me or my posts. --bill

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