Hi!
I am planning a 5km PtP-link using Mikrotik.
Have two 60cm 5GHz Parabolic Dual-Polarization antennas.
Stable throughput and low ping is important.
What is the best way to do this and what hardware is recommended?
How much throughput can I expect on such a link, based on real-life experience?
80mbit half-duplex depend on how clear propagation you have. RB600 on AP side and RB800 on client side ( RB600 is little bit short ) and R52Hn - I am not tets it on outdoor environment but seems not bad.
This is my opinion based on real-life experience, threat this as it is.
My suggestion is to use 2xRB800 with a couple of R5H on each side, dual nstreme with 2x40mhz channels.
Of course you will need 80mhz of free frequency, dunno if it is possible for your enviorment.
Latency will stay close to 1ms with 60mbit full duplex real-traffic.
You might need to lower the tx-power of your cards though..
Why RB800? > I’m using a RB433AH for a link but at 40mbit the cpu is almost at 100%
Why R5H? > Due to its high sensitivity, even you don’t need so high tx-power, it has an excellent receiving sensitivity.
Check the cross-polarization isolation on your dualpol antenna and make sure it is high enough.
I recently finished my p2p 5km link.
2xRB433AH with R52n Cards
2x 90cm dual polarized antennas
real throughput is around 80-90mbits.
I have 170 clients behind the link and have pings to a max 20ms when using alot of throughput.
60cm dish comes small…i just had to replace them with 90cm to pass the 35mbits barrier. Just low signals and CCQ.
If you want better ping…try bigger antennas.
Post some results when u get it up and running.
Regards,
Ventsi!
You must have an interesting config to hit max CPU. I have many 433AHs deployed with 2 40mhz channels and get full rate at less than 15% cpu (full rate being 65+mbps of tcp traffic and 75+mbps of udp). With and without dual nstreme.
