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Wireless backhaul with loadbalance

Posted: Thu Dec 20, 2012 3:04 pm
by natanielklug
Hello all,

I am trying to build a setup where I can use 2 radios in both ends and aggregate this links so I can put some more traffic in the network. I've been trying some solutions but none worked as I want.

This is my configuration:
(sideA) - (radio.ptp.A.1) <> (radio.ptp.A.2) - (sideB)
        - (radio.ptp.B.1) <> (radio.ptp.B.2) -
I need to use TX from sideA to sideB as much as possible. Today I am running one link with XR5 radios and I am getting something around 30Mbps of TCP traffic from sideA do sideB but I need to increase it for at least 150 Mbps in the next 4 months and I am whiling to use Mikrotik.

I tried OSPF and failover was ok but it selects on link to upload and another one to download. Not my goal. I tried bonding but no lucky, the same result as OSPF and the failover was loosing packets. I tried some MPLS functions as Janis had a document on MUM USA/2011 but had no lucky with this too.

Is there anyone who had a good example on how to do it?

Regards,

Nataniel Klug

Re: Wireless backhaul with loadbalance

Posted: Fri Dec 21, 2012 2:22 pm
by wirelesswaves
I was thinking of something similar.

I was considering using 2 x groove metal at each end of link in nstream mode and at opposite ends of the 5g band.

then I was going to put a basic router behind each, say RB450.

It may be possible to use packet marks to mark each alternate new connection, I have seen this somewhere but I cant remember in which thread I saw it.. But its out there somewhere..

Then each new connection can be routed first through 1 groove and then the next connection routed through the other.. Its never going to be 50/50 but its a good start.

Then write a script to monitor the "registration flag" in the wireless tables, use the presence of the flag to either enable or disable the packet marks and enable or disable the broken route.

It should enable you to split your traffic load across the 2 links and also for the surviving link to continue with ALL traffic, should a groove breakdown or one of the links suffers interference.

Simon

Re: Wireless backhaul with loadbalance

Posted: Fri Dec 21, 2012 4:19 pm
by natanielklug
Hello Simon,

Thank you for your comments. I think this should be something about Mangle Firewall Rules. I can do it. I am not sure I got the script but I will try to understand that and I will make something in my lab first. Thank you again.

Re: Wireless backhaul with loadbalance

Posted: Sat Jan 05, 2013 12:20 am
by jmay
I think you had OSPF misconfigured. I have the setup you are looking for and it balances 50% of the traffic to each of 2 sets of radios. I have a router on each end of the link setup with OSPF and 2 sets of wireless backhauls connected to each router. I am acheiving nearly 200megs between the 2 radios on my download and another 200 on the upload.

If you post a config someone can show you where you went wrong.

Re: Wireless backhaul with loadbalance

Posted: Sat Jan 05, 2013 3:08 pm
by natanielklug
I think you had OSPF misconfigured. I have the setup you are looking for and it balances 50% of the traffic to each of 2 sets of radios. I have a router on each end of the link setup with OSPF and 2 sets of wireless backhauls connected to each router. I am acheiving nearly 200megs between the 2 radios on my download and another 200 on the upload.

If you post a config someone can show you where you went wrong.
Hi jmay!

Thank you for your answer. In this setup in made can you get 390 Mbps download and 10 Mbps upload? This is my problem. I achieved down and up as a full duplex link, but it´s not what I am looking for. I need more thorughput into my download so I need to agregate both links as one so my download goes up.