[Bloat] datapoint from one vendor regarding bloat

[Sebastian Moeller]

Interesting! Thanks for sharing. I wonder what the netalyzr buffertest would report for these?

Best Regards
        Sebastian

On April 11, 2019 12:38:54 PM GMT+02:00, Mikael Abrahamsson <swmike at swm.pp.se> wrote:
>
>Hi,
>
>I talked to Nokia (former Alcatel/Lucent equipment) regarding their 
>typical buffer settings on BNG. I thought their answer might be
>relevant 
>as a data point for people to have when they do testing:
>
>https://infoproducts.alcatel-lucent.com/cgi-bin/dbaccessfilename.cgi/3HE13300AAAATQZZA01_V1_Advanced%20Configuration%20Guide%20for%207450%20ESS%207750%20SR%20and%207950%20XRS%20for%20Releases%20up%20to%2014.0.R7%20-%20Part%20II.pdf
>
>"mbs and cbs — The mbs defines the MBS for the PIR bucket and the cbs 
>defines the CBS for the CIR bucket, both can be configured in bytes or 
>kilobytes. Note that the PIR MBS applies to high burst priority packets
>
>(these are packets whose classification match criteria is configured
>with 
>priority high at the ingress and are in-profile packets at the egress).
>
>Range: mbs=0 to 4194304 bytes; cbs=0 to 4194304 bytes Note: mbs=0
>prevents 
>any traffic from being forwarded. Default: mbs=10ms of traffic or 64KB
>if 
>PIR=max; cbs=10ms of traffic or 64KB if CIR=max"
>
>So the default setting is that they have a 10ms buffer and if a packet
>is 
>trying to be inserted into this buffer and it's 10ms full, then that 
>packet will instead be dropped.
>
>They claimed most of their customers (ISPs) just went with this setting
>
>and didn't change it.
>
>Do we have a way to test this kind of setting from the outside, for 
>instance by sending a large chunk of data at wirespeed and then
>checking 
>the characteristics of the buffering/drop for this burst of packets at 
>receive side?
>
>-- 
>Mikael Abrahamsson    email: swmike at swm.pp.se

-- 
Sent from my Android device with K-9 Mail. Please excuse my brevity.
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