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Re: QUIC servers and enterprise multihoming

Olivier Bonaventure <Olivier.Bonaventure@uclouvain.be> Fri, 28 October 2022 07:25 UTC

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Date: Fri, 28 Oct 2022 09:25:33 +0200
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Reply-To: Olivier.Bonaventure@uclouvain.be
Subject: Re: QUIC servers and enterprise multihoming
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To: Robert Raszuk <robert@raszuk.net>
Cc: RTGWG <rtgwg@ietf.org>, "quic@ietf.org" <quic@ietf.org>
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From: Olivier Bonaventure <Olivier.Bonaventure@uclouvain.be>
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Robert,
> 
> Many thx for sharing this proposal. Three easy questions ..

Thanks for your comments
> 
> 1. Do you envision that IP:PORT pairs would be manually configured by 
> the operator ?

This is typically what sysadmins do when they configure web servers or 
other types of servers, they indicate in the configuration the addresses 
and port the server listens to. On a multihomed server, they either 
indicate they the server should listen to all interfaces or a subset of 
them. This configuration already exist.

> 2. Do you envision that such addresses may span multiple servers ?

Anycast setting is a load balancing problem that is the target for 
QUIC's preferred address transport parameter

> 3. Isn't this a bit overlapping (or to say stronger replacing) function 
> of load balancers ?
> 

The problem is different. A load balancer is typically a single address 
served by a large number of servers. This is currently the main use case 
for QUIC. This is discussed in 
https://datatracker.ietf.org/doc/html/draft-ietf-quic-load-balancers

In the draft, we focus on isolated servers. These could be web servers 
in companies or or example file servers that are running SMB over QUIC

Best regards,


Olivier

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