hi,
what is a better solution for using a full duplex link??
One RB with 2 WLAN card on each side or 4 units of RB-SXT??
and is it possible for RB-SXT to be used for a full duplex link as i have not been able to find any config for that though…
Hello,
what purpose for fdx link? speed, latency or just tick, that you have fdx?
Gregg Sowell has an excellent tutorial on this. Sorry forget url
Not possible with single sxt ar each end
well full duplex is something like 100/100mbit tx/rx, at wireless is somehow different
4 units of SXT u have to use bonding technique
I have done several A-standard links 2wlan on one board but that was before N come out
for fun tomorrow Ill try bonding with 4 SXT in my lab Ill keep u informed
It just came to my mind on older MT OS version there was an option where u can select radio only to transmit or only to receive me myself never tried where basically u can do “full duplex” link 
like nstreme dual
hi,
thank you for the replies…
i checked the tutorial by Greg and its fantastic…
my question remains… should we use one routerboard with 2 WLAN cards on each side?? or can we achieve the same using 4 SXT ( 2 on each side )
Hello,
If enough 30/30Mbits capacity of link, better to use single unit on the side (SXT+needed antenna gain to reach distance) .
Now SXT’s are with 600Mhz CPU’s so they will handle easy given througphut.
Doubled link looks like you are using SFP modules with 2 fibers instead 1. It works, but there is no need to use it.
hey… thanks for the reply…
definately a full-duplex link will be having some more advantange of a half duplex link…
so the question still remains… should a single routerboard with 2 WLAN cards or 4 SXT ( 2 on each side )
2 wlan on one board will give u more self interference (I have this kind of problems on A-standard) 4x SXT theoretically will give u much more throughput ill try this today
hi thanks…
good to know you will be trying it today… can you please also tell me the results and how the layout was with what configuration you did…
it will be very helpful. i would really appreciate your input on this…
thanking you again…
chk this following topic : http://forum.mikrotik.com/t/dual-setup-with-ospf-full-duplex-link/27510/1
might be of some help in your setup…
This is my first 40Mhz N test but I m not very happy with that too much self interference
Ill remake test with RB800 in better conditions tomorrow + Ill do 2x 60Mhz Test -advanced channels
And one more thing I can not make nv2 to work dont know why (2xwlan on one board) - if u use 4xSXT it should work because wireless card basically are on separate boards
Signals are too high at -13,-16, -29dBm, you could and probably are overloading the radio cards at those levels, self interference is no surprise.
I try to lower the output power but no luck
wireless cards were not just overloading, u just cant imagine how much they were overheating
to saintofinternet in good condition u can get something around 200mbit TCP and 300mbit UDP using 40Mhz channel width
real question what I want to try is how much I can get using 60Mhz channel
What antennas are used, what distance apart ?
hey lakis… thank you for the initial test and report… it will be quiet useful for all users on this forum i suppose.
i wonder if Mikrotik guys themselves have designed/developed such a link? and if yes what would be their configuration…
as what Greg has show in this tutorial here http://gregsowell.com/?p=2493 i am a bit confused now…
are there 4 units involved in the above setup?
Is anyone using the layout suggested by Greg and using two boards self interference appears to a issue when one comment reports
…We have several of these full duplex links deployed where one radio is 5.x and the other radio is 3.65…
i wish Greg and Normis themselves get into this conversation now at this stage
hi lakis…
any update on your test??