Excellent discussion going here, I'd propose something similar to Brad, with a single antenna, but with a combiner and dual ODUs for licensed on both paths. Those go down to separate IDUs, with separate Ethernet ports to different upstreams or routers. That gives you complete isolation i.e. no components (actives, power or cables) in common except the physical antenna and RF combiner which are passive mechanical hardware. It's a standard technique for licensed MW, and gives telco-grade resilience. The advantage is that you get 100Mbps on both legs - which potentially you could use both of which when they are up, and also, neither is "worse" than the other in use. The only disadvantage is that needs 2 licenses (unless using hotstandby, which only needs one, but requires the equipment to be coupled together to effect the switch-over), whereas Brad's suggestion uses 5.8 for the second leg.
We have and do ship such equipment, particularly for service providers: feel welcome drop me a line off-list if anyone's interested. Best regards Stephen CableFree Solutions -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Brad Belton Sent: 18 June 2008 17:38 To: 'WISPA General List' Subject: Re: [WISPA] mission critical 100Mbps links Mission critical equates to multiple paths and technologies in my book. Network hardware can break whether it costs $100 or $100,000. I would consider a licensed & unlicensed combination for this path. If your sites will allow you could go with 6GHz and a 5Ghz failover path. Both links could probably use the same 6' antenna with a dual polarity feed, but then again you are depending on one common point of failure by serving this "mission critical" site with two links from the same upstream site. The better solution would be to feed the site from completely diverse upstream paths. Best, Brad -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of RickG Sent: Tuesday, June 17, 2008 11:03 PM To: WISPA General List Subject: [WISPA] mission critical 100Mbps links Any opinions on 100Mbps radios for mission critical 100Mbps PTP links? I need to go 10-15 miles. Licensed or unlicensed OK. -RickG ---------------------------------------------------------------------------- ---- WISPA Wants You! Join today! http://signup.wispa.org/ ---------------------------------------------------------------------------- ---- WISPA Wireless List: wireless@wispa.org Subscribe/Unsubscribe: http://lists.wispa.org/mailman/listinfo/wireless Archives: http://lists.wispa.org/pipermail/wireless/ -------------------------------------------------------------------------------- WISPA Wants You! Join today! http://signup.wispa.org/ -------------------------------------------------------------------------------- WISPA Wireless List: wireless@wispa.org Subscribe/Unsubscribe: http://lists.wispa.org/mailman/listinfo/wireless Archives: http://lists.wispa.org/pipermail/wireless/ No virus found in this incoming message. Checked by AVG. Version: 8.0.100 / Virus Database: 270.4.0/1506 - Release Date: 17/06/2008 16:30 -------------------------------------------------------------------------------- WISPA Wants You! Join today! http://signup.wispa.org/ -------------------------------------------------------------------------------- WISPA Wireless List: wireless@wispa.org Subscribe/Unsubscribe: http://lists.wispa.org/mailman/listinfo/wireless Archives: http://lists.wispa.org/pipermail/wireless/
