Re: Q on the congestion awareness of routing protocols

[Jon Crowcroft]

i suggest reading
https://www.icir.org/floyd/srm.html
plus any of many papers on tcp incast 
> Jon Crowcroft wrote:
> 
> 
>     Gonna say, ironically, one early use of multicast was a proposal to 
> use SRM
>     instead of a mesh of tcp connections for iBGP...so some people do 
> think
>     about scaling control plane traffic in the presence of congestion, 
> some
>     times:-)
> 
> That is a terrible approach, because, even within a link, TCP
> mesh is the way to go against congestion.
> 
> That is, within each link, routers should not rely on link
> multicast to exchange multicast control messages and should
> have TCP mesh between them over which the messages can be
> exchanged reliably even if there is congestion, which is
> what I did in 2001 with SRSVP (Simple RSVP, a stable and
> hierarchical unicast/multicast QoS routing protocol
> without crank back).
> 
>                                         Masataka Ohta
> 
>