I liked the idea of running a bridged backhaul. Is that not practical for this?
I'm hoping to have much lower latency and administrative overhead (less routes to try and keep track of). thanks, marlon ----- Original Message ----- From: "can...@believewireless.net" <p...@believewireless.net> To: "WISPA General List" <wireless@wispa.org> Sent: Wednesday, March 04, 2009 4:52 AM Subject: Re: [WISPA] 100 meg full duplex backhaul > We have the ring configuration with licensed links running OSPF > without backups on the individual links. We spec our links to be as > close to 99.999% at full modulation as possible. We continue to try > to create loops in the network. For example, if you have a high-end > commercial customer, sell them a backup link to another tower as part > of the package. You've now created another link between towers and > added another loop to your network. > > On Wed, Mar 4, 2009 at 1:06 AM, Jack Unger <jun...@ask-wi.com> wrote: >> 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 >> - Show quoted text - >> >> >> 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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