Hi all,

who has idears for solving the following problem: Routed download is to low


R1 (RB for test) --- 100BaseTX PPPOE --- R2 (rb2011) ---- fiber 1000 ---- edge-x SFP as switch ----- air fiber (64 MBit/s) .... airfiber ------ edge switch ------- R3(ccr1036)

I made the following tests with PC and MT bw-tool and rb-bw-test. All test TCP
from PC with BW-test-tool shows 90MBit/s TCP -> for 100BaseTX ok
from PC to R2 = 90 MBit/s ->ok (cable seems ok)
from PC to R3 = 30MBit/s -> not ok
from R2 to R3 = 63 MBit/s -> ok

Speedtest from pc to internet shows max 20MBit download but 55 Mbit upload!!
No queues! No connection tracking, no nat. LCD at RB2011 disabled. Seems that there is a problem at the RB2011

Which device are you using for the Internet distribution?

from PC to R3 = 30MBit/s -> not ok

Actually not too surprising. Remember wireless is half-duplex communication, add in TCP and IP overhead with CSMA/CA and any security on the wireless link. It's not totally crazy to see 40 - 60% of the "link speed" of a wireless connection. The remark about half-duplex alone is only relevant if you are not using time synchronized air-fiber units like the AF5. If you are using AirMax on say Nano's then it is true.

Also you'll want to shape the connection intelligently, to the speed of the slowest link, at the most correct point. With the information you've shown us in the drawing that would be at R2 going to the switch to prevent and limit unnecessary buffer drops as the connection medium goes from 100 mbps to 1 gbps to 64 mbps, etc .... That said you may have to get more particular in your queue or QoS rules if that fiber switch is used for anything else.

Hmm. I can get the full WAN-bandwidth from R2. I can also get the bandwidth on R1 over R2 to R3 when I use the 20 streams. The really strange thing is that it worked before with same config up to the point of an defective RB2011 (shows 10 MBit/s instead of 100M on some ports) After change it the speed was 60M again.

Why can I get the full upload from the client?

@HarBenly What do ypu mean with "internet distribution". On the customer side the rb2011 will distribute over lan. Structure behind R3 is mikrotik with licensed microwave xpic systems.

Hmm. I can get the full WAN-bandwidth from R2. I can also get the bandwidth on R1 over R2 to R3 when I use the 20 streams. The really strange thing is that it worked before with same config up to the point of an defective RB2011 (shows 10 MBit/s instead of 100M on some ports) After change it the speed was 60M again.

Why can I get the full upload from the client?

You are likely hitting buffer depth on the switch or R1 fabric.

Which device are you using for the Internet distribution?

What do you mean when you say this?

I meant to ask about the router which have internet bandwidth distribution allocation capability that can break the bandwidth for different devices. I am forgetting the name, which I used to use. I heard Mikrotik also does this task.

Some one please help me?