Hello all,

I want to collect a few tuning tips for a centralized PPPoE-Server (Mikrotik OS) terminating several EoIP-links to distributed Wlan-APs (Mikrotik OS).

What I did is following:
1. EoIP-Tunel from each Public-AP to the PPPoE-Server.
2. On the Public AP, the EoIP Interface is bridged with the public wlan-interface
3. For each EoIP-Interface terminating on the PPPoE-Server machine, I configured an own PPPoE-Server. I don´t bridge the EoIP-Interfaces on the PPPoE-Server machine.
4. MTU for EoIP Tunnels is 1500
5. MTU/MRU on PPPoE-Server-Profile is 1450
6. Change TCP-MSS is activated in PPPoE-Server Profile

Is there anything else I can do for optimizing this scenario?

Thanks in advance.

Kind Regards,
canram.

Is there nobody else with a similar scenario?

_canram_

Hi,

what exactly do you want to optimize? Is something not working? Slow? High latency? Or do you simply ask IF you can optimize anything at all?

There might be one or two things to "optimize" - even though your customers probably won't even notice the change:
- you could increase the MTU/MRU on the PPPoE server to 1492 (or 1488 if you are using MPPE encryption). This SHOULD work over an EoIP tunnel with an MTU of 1500 - at least it does work on our network.
BUT: if everything works as expected you should not change anything.

- you can use queues on your internet gateway to prioritize traffic (eg. prefer VoIP traffic over "normal" www traffic). Here you can play around quite a lot - BUT you might make things worse if you don't know what you're doing...

"Never change a running system."

Posted: Wed Oct 26, 2005 1:16 pm Post subject:
what exactly do you want to optimize? Is something not working? Slow? High latency? Or do you simply ask IF you can optimize anything at all?

I have no real, serious problem. Nearly everything works fine. But if simultaneous sessions on the PPPoE server reaches about 50 and the traffic (for all sessions) reaches about 4 - 5 mbit/s, I experience many pppoe-disconnects on the pppoe-server. The disconnects are very short. After 1 - 5 seconds, the clients reconnect.

Therefore I wonder, if there´s something to optimize?