On Tue, 2 Apr 2019, Sebastian Moeller wrote:
See above how Deutsche Telekom deals with that issue, at least in the German market.
I've read rumours about some ISPs implementing interaction with the VDSL DSLAM where there is an estimation of the current link-speed for each individual customer and then it tries to set the BNG egress shaper appropriately.
I am very happy about my FTTH solution I have now since from what I can see the L2 network is almost never a limiting factor (much better than my DOCSIS connection) so my bidirectional SQM with CAKE seems to work very well.
Still, the HGW can never solve these problems properly, the egress shaping in the BNG needs to do a proper job. From what I have been told, there has been improvements here in the past few years.
What I am more worried about is the egress shaping from the HGW. I talked to several vendors at BBF and they talked about ingress policing being commonly used on the BNG. This means no ingress shaping at all (just packet drops if they exceed the configured rate). I don't know about buffering on the HGW though and how the policed rate is set compared to the L2 rate the HGW can send via.
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