Right. I get that part. But I've never used it out here so I don't know if it's a routing function or a bridging function like spanning tree. I'm trying to figure out what hardware would be best deployed at the tower sites.
Part of what I'm trying to do is get a grip on long term costs. If I have to run sensitive routers vs. hardened switches it'll make a difference. Adding heat and AC to the towers changes the annual costs quite a bit. thanks, marlon ----- Original Message ----- From: "Mike Hammett" <wispawirel...@ics-il.net> To: "WISPA General List" <wireless@wispa.org> Sent: Wednesday, March 04, 2009 7:53 AM Subject: Re: [WISPA] 100 meg full duplex backhaul > OSPF is how you manage load sharing and load balancing. > > > ----- > Mike Hammett > Intelligent Computing Solutions > http://www.ics-il.com > > > > -------------------------------------------------- > From: "Marlon K. Schafer" <o...@odessaoffice.com> > Sent: Wednesday, March 04, 2009 9:36 AM > To: "WISPA General List" <wireless@wispa.org> > Subject: Re: [WISPA] 100 meg full duplex backhaul > >> Certainly Jack. I don't know anyone that's built something like this >> already though. >> >> And, it's really not that far off from what we already do. It's just >> bigger and faster. >> >> I've not used the hardware needed for this system so I'm mostly >> interested >> in what people would install. I know there are a few people here that >> have very high speed backbone systems in place. >> >> The one part that's got me stumped so far is what to do to create a load >> sharing load balancing mechanism at the main towers. Should that be done >> via high end switch or router? >> >> If you know someone that would be good help in putting this idea together >> please feel free to have them contact me. Please note, that nothing will >> be able to happen at a nut and bolt specific level until construction >> starts. The program is customer and land acquisition specific, not build >> it THIS way specific. Did I say that at all clearly? Does it make >> sense? >> That is part of why I've not even looked for help yet, there are far more >> questions than plans in place. Things are still at a conceptual stage, >> but I'm trying to drill down a bit better. >> >> Thanks! >> marlon >> >> ----- Original Message ----- >> From: Jack Unger >> To: WISPA General List >> Sent: Tuesday, March 03, 2009 10:06 PM >> Subject: Re: [WISPA] 100 meg full duplex backhaul >> >> >> Marlon, >> >> Trying to design a complex system like this via a listserve "committee" >> is more than a little bit risky. Have you considered going to someone who >> actually has this type of network design experience and paying them to do >> the whole job right the first time? Just asking. >> >> jack >> >> >> Marlon K. Schafer wrote: >> I don't know if I'll be able to put some many antennas on the towers. >> >> How close together would I need the towers to prevent the rain fade >> outage >> at 18 gig? >> >> Aren't there any 5.8 systems that will do this reliably in the first >> place? >> I shouldn't need 5.x for distribution so I could use it all for backhaul. >> I'll have 2.4, 3.65, 4.9 and hopefully, someday, TVBD for the consumers. >> marlon >> >> ----- Original Message ----- >> From: "Brian Webster" <bwebs...@wirelessmapping.com> >> To: "WISPA General List" <wireless@wispa.org> >> Sent: Tuesday, March 03, 2009 9:44 PM >> Subject: Re: [WISPA] 100 meg full duplex backhaul >> >> >> The 5.8 GHz backup links will help you deal with outages due to >> environmental conditions such as rain fade. That has to be factored in >> for >> links when you operate above 10 GHz. Even if you run a loop configuration >> you could have a fade condition that could block out a whole tower site >> severing your links to that location in both directions of your loop. >> Another path at a lower frequency with spatial diversity from your >> primary >> link (different mounting heights) would at least keep that site up though >> maybe not at full speed. >> >> >> >> Thank You, >> Brian Webster >> >> -----Original Message----- >> From: wireless-boun...@wispa.org [mailto:wireless-boun...@wispa.org]on >> Behalf Of Marlon K. Schafer >> Sent: Wednesday, March 04, 2009 12:26 AM >> To: WISPA General List >> Subject: Re: [WISPA] 100 meg full duplex backhaul >> >> >> Thanks. >> >> Do you think we need the unlicensed for each hop if the entire network is >> build in a circle? >> marlon >> >> ----- Original Message ----- >> From: "Travis Johnson" <t...@ida.net> >> To: "WISPA General List" <wireless@wispa.org> >> Sent: Tuesday, March 03, 2009 9:12 PM >> Subject: Re: [WISPA] 100 meg full duplex backhaul >> >> >> Licensed 18ghz links with 5.8ghz backup links for each hop. Figure >> $15,000 per link for everything. >> >> Travis >> Microserv >> >> Marlon K. Schafer wrote: >> Hi All, >> >> I'm looking for some gear that'll be rock solid at 15 to 20 miles. Some >> links may be less, but I'm not counting on that. >> >> I'll be hauling public safety, private vpns, and normal internet >> traffic. >> >> I'll probably have around 20 towers, all linked in a ring. I can load >> share >> across the ring as long as speeds never drop below 100megs. I'll want >> things to be automatically self healing if there is a loss of >> connectivity >> in any direction. >> >> What would you guys use/suggest? >> >> I'd love to go licensed (but no 6 gig due to antenna sizes) but >> unlicensed >> may be OK due to the failover capabilities. >> >> We have to worry about snow, fog and, worst of all, dust storms. >> >> What gear would you use? How would you set this up? >> >> I'm in the pricing stage so off list quotes etc. are welcome. Pall park >> numbers are fine at this time, as long as they tend to run high vs. low, >> I'd >> rather over estimate the costs. >> >> thanks, >> marlon >> >> >> >> ------------------------------------------------------------------------- >> ------- >> WISPA Wants You! 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