3-Line MLPPP DSL on BSD - MTU/MRRU/MRU??

[Carrick, David]

The config works - just don't think it is optimal. I structured it based on the mpd5.conf.sample and some other configurations stolen from dslreports.com.

I am looking more for advised MRU/MTU, and MRRU values for the links and the bundle as a whole as I do not believe my settings are optimal. I have tested a 2link configuration with similar values and obtained very, very fast speeds. Adding the 3rd link with the settings below does improve the speed, but I do not feel it is as fast as it should be. 

Repsectfully, 

David Carrick
AIX Services | Spectra Energy
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-----Original Message-----
From: Julian Elischer [mailto:julianelischer at gmail.com] On Behalf Of Julian Elischer
Sent: April-22-10 12:12 PM
To: Carrick, David
Cc: freebsd-net at freebsd.org
Subject: Re: 3-Line MLPPP DSL on BSD - MTU/MRRU/MRU??

On 4/22/10 8:35 AM, Carrick, David wrote:
> Hi Guys,
>
>  I have posted this question in a few different forums but I have not
> had much luck with a response and I'm hoping someone can help me
> out. I recently upgraded to a triple-5meg DSL service setup with
> MLPPP here in Ontario Canada through a provider called Teksavvy. I
> chose FreeBSD as my o/s of choice and I'm using MPD5.5 to bond the
> connections. I believe they are using Juniper equipment on their
> end, not sure if
 > matters.
>
> I have been using Linux for 15 years, and am an AIX Infrastructure
> Analyst by trade, but I am not very familiar with more advanced
> networking terms and technologies, and I am pretty new to FreeBSD.
>
> I was wondering if someone could help me with the optimal values
> for my mpd.conf file - Max Transmit units, Max recieve unit, all
> that stuff. Here is what I've got going so far... Please note I am
> not on the freebsd-net mailing list so if you could CC me on the
> responses that would be great!


Not my area of best knowledge but a couple of points..
Use 'load' to abstract away common items from the links
Try not to reference things until after they are defined..

is this working? and if not, what happens?
(keep list on Cc please)


# How I would have structured it:
# just off the top of my head.. untested and probably with errors.


default:
	load DSL

common:
	set link max-redial 0
	set link keep-alive 10 60
	set pppoe service "teksavvy"
	set link enable multilink
	set link enable shortseq
	set link disable protocomp
	set link mrru 1500
# 	set link mru 1500
	set link mtu 1492
	set link bandwidth 5056000
	set link action bundle B1

L1:
	create link static L1 pppoe
	set auth authname xxx at wiredhighspeed.com
	set auth password xxx
	set pppoe iface fxp1
	load common
	open

L2:
	create link static L2 pppoe
	set auth authname xxx at wiredhighspeed.com
	set auth password xxx
	set pppoe iface fxp2
	load common
	open

L3:
	create link static L3 pppoe
	set auth authname xxx at wiredhighspeed.com
	set auth password xxx
	set pppoe iface fxp3
	load common
	open

DSL:
	create bundle static B1
	set iface route default
	set ipcp ranges 0.0.0.0/0 0.0.0.0/0
	set ipcp enable req-pri-dns
	set ipcp enable req-sec-dns
	set ipcp disable vjcomp
	set bundle disable round-robin
	set bundle disable bw-manage
	set iface mtu 1492
	set iface disable on-demand
	set iface enable tcpmssfix
	load L1
	load L2
	load L3
	set bundle links L1 L2 L3