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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