Re: [5gangip] New Version Notification for draft-xyzy-atick-gaps-00.txt

Saleem Bhatti <saleem@st-andrews.ac.uk> Thu, 07 June 2018 15:24 UTC

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From: Saleem Bhatti <saleem@st-andrews.ac.uk>
To: Dino Farinacci <farinacci@gmail.com>
CC: 5GANGIP <5gangip@ietf.org>
Thread-Topic: [5gangip] New Version Notification for draft-xyzy-atick-gaps-00.txt
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Date: Thu, 07 Jun 2018 15:24:40 +0000
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Subject: Re: [5gangip] New Version Notification for draft-xyzy-atick-gaps-00.txt
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Dino;

> On 07 Jun 2018, at 14:27, Dino Farinacci <farinacci@gmail.com> wrote:
> 
>> ILNP is a "host-based" (end-system) solution and not a "network-based" solution. If the end-system is not updated to support ILNP, then ILNP cannot be used.
> 
> We will have the serialization problem establishing transport connections then. We had this with IPv4 and IPv6. 
> 
> To be specific, DNS returns both A and AAAA records. The local system sends a TCP SYN and it times out because there is not a complete IPv6 path to the destination. Then IPv4 is tried and used. Connection open latency of the time-out value.
> 
> The same problem happens here because the local system is doing ILNP and the destination is not, it takes a response to find out. Connection open latency 1 RTT.

Agreed - an additional ~1 RTT connection latency when ILNPv6 is not supported.

Cheers,
--/Saleem

> 
> Dino
>