Hi,

I have been using Mikrotik hardware for some time but have only jsut got around to use the PPPOE server, I have set it up to the point that it is working 100% I am using a RB450 with an externaly hosted Freeradius box for authentication.

The problem I can see is all PPPOE connection the latency jumps to 15ms on the first hop, the network is all cabled no wireless If I disconnect the pppoe session and ping the same ip its sub 1ms.

What could be causing this I have no seen this issue in the past when using ppp auth.

{EDIT} Forgot to also add the Upstream speed is capped at 4.6mbps for some reason while the downstream hits the CPU limit on the RB450 at 26mbps - :S any ideas this has me stumped I am using 3.23 and does this on v4 beta.

Any help you can provide would be of great help.

Cheers

Cameron

I FOUND THE EXACT SAME TWO PROBLEMS ON RB450G I EVEN WROTE TO SUPPORT ABOUT THE 15ms PROBLEM THEY told me its normal I WANT TO KILL SOMEONE.

p.s. ok here is a screenshot I sent to support and a quote from the message:



Me:

See attachments. Sniff capture is taken during ping from one
pppoe client to other pppoe client. Screenshot shows the high jitter.
Ping from RB to client also has high jitter. Ping that travels on
layer2 from client to client is OK, there is no jitter there. Problem
is seen only on packets traveling through RB

Can you fix this problem for next ROS release? Could this be a
HW/power supply problem? How can I diagnose and troubleshoot this
problem further?

Thank you very much for the help!! I really need it for this one and
appreciate it.

Sniff not included for security reasons.

Support:

In that screen shot max latency was 18ms - I hardly will call that jitter. If
CPU and interfaces are occupied by something else except ping it is normal
behavior.

Regards,
Janis Megis

Me:

occupied CPU less than 20%, two or three interfaces less than 6%. ping
should be less IMO, just look into that as well when you have time.

Me:

I think jitter is from a running tool on the RB like I just tested
with sniffer - it makes it jitter. Stopped sniffer - no jitter.
Started sniffer - jitter again. Just to let you guys know.

If my conclusion here is right, this leaves the speed maxing out at ~26Mbps with 100% CPU problem.

I am sending supout rifs to support right now...

This is "the OLD" windows problem. Sometime it is 1ms and sometime it is 15ms.

If you mean for relation from RB to RB or RB to Mikrotik it should not heppend.
Just RB or Mikrotik x86 to Windows gives 1,15ms bug.

That is also sitation in case of

Cisco to Windows, you will also have the same problem,

so we can assume it is normal : )

Yep. Definately doesn't happen if you ping from the RB or from a linux system...

But why does it happen?

What is annoying me is the UPLOAD speed... its capped/chaped to 4.6mbps downstream is fine at 26mbps... should be alot more but hits the 100% CPU

Below is a screenshot of PING and Trace first hop in the pppoe server second hop is my cisco 877

the 15ms doesnt really bother me its the upload speed thats annoying.. is there a way to fix this?

Cameron