[Bloat] SQM Settings for Bonded DSL?

[Sebastian Moeller]

Hi Rich,



> On Jun 21, 2018, at 13:08, Rich Brown <richb.hanover at gmail.com> wrote:
> 
> Hi folks,
> 
> Our local DSL ISP (Consolidated Communications, Inc, formerly Fairpoint) recently installed a Smart/RG SR555ac (https://www.smartrg.com/sr555ac) bonded ADSL2 modem.
> 
> I seem to remember earlier messages stating that the dual queues in the DSL modem screwed up (or, de-optimized) the SQM in the router. 

	As far as I can see this should not really cause an issue (besides that latency for single packets will be limited by the fact that you have two half-total-bandwidth links) except maybe that there might be additional overhead for the bonding on the link, but I have never looked at channel bonding so this is pure spekulation. I assume here that your Modem handles the bonding transparently. I could envision that running an non-transparent load-balancer (like with mwan3 under openwrt) might introduce issues for sqm, but if all you see is one ethernet link to the modem I do not expect any major quirks (except latency not being in line with the expectancy from total bandwidth).

> 
> The web GUI does provide info on SNR, sync rates, etc. Any advice for SQM beyond the standard, "measure the no-SQM speed, then start at 5% below..."? Thanks.

	I am curius myself and would like to ask you to keep me/the list posted on whatever you find out about the applicability of sqm to bonding.

Best Regards
	Sebastian


> 
> Rich
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