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Re: [IPsec] IPsecME virtual meeting minutes, and way forward with fragmentation

"Rajeshwar Singh Jenwar (rsj)" <rsj@cisco.com> Sun, 19 May 2013 03:05 UTC

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From: "Rajeshwar Singh Jenwar (rsj)" <rsj@cisco.com>
To: "Brian Weis (bew)" <bew@cisco.com>, Yaron Sheffer <yaronf.ietf@gmail.com>
Thread-Topic: [IPsec] IPsecME virtual meeting minutes, and way forward with fragmentation
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Date: Sun, 19 May 2013 03:05:31 +0000
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Cc: IPsecme WG <ipsec@ietf.org>
Subject: Re: [IPsec] IPsecME virtual meeting minutes, and way forward with fragmentation
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+1

Kind Regards,
Raj

-----Original Message-----
From: ipsec-bounces@ietf.org [mailto:ipsec-bounces@ietf.org] On Behalf Of Brian Weis (bew)
Sent: Friday, May 17, 2013 5:25 AM
To: Yaron Sheffer
Cc: IPsecme WG
Subject: Re: [IPsec] IPsecME virtual meeting minutes, and way forward with fragmentation


On May 16, 2013, at 9:57 AM, Yaron Sheffer <yaronf.ietf@gmail.com> wrote:

> Hi,
> 
> As promised, we just had a virtual interim meeting to discuss IKEv2 fragmentation. Please see the minutes below (thanks Paul!).
> 
> Following up on this meeting, we would like to confirm the decision on the mailing list:
> 
> - The group still thinks this is an important problem that needs an interoperable solution.
> - We would like to abandon the work on IKE-over-TCP.
> - And to work on IKEv2 protocol-level fragmentation, using draft-smyslov-ipsecme-ikev2-fragmentation as a starting point.
> 
> Please send your approval, disapproval or comments to the list within a week (until May 23).

I approve.

[snip]

> Yaron: do we want to stay with the current TCP-based solution?
> 	Brian: might be running on sensors that don't have a TCP stack

Someone made this comment, but it wasn't me. 

I did mention that the current TCP-based solution has the advantage of only re-sending the missing TCP segment, whereas current and proposed UDP-based fragmentation solutions re-send all packet fragments. That could be valuable for a VPN gateway with many peers with a lossy network. But that doesn't seem enough of a justification to stay with the current TCP-based solution.

Brian
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