Hi Alex,
Thank you for reviewing our I-D.
Regarding GTP-U packet format described in the I-D, as Arashmid pointed
out, all of the values are examples. (Thanks Arashmid!)
If they are confusable, we can change such values to symbols (e.g., IP =
xxx).
Best regards,
Shunsuke
On 2018/08/20 23:58, Arashmid Akhavain wrote:
Alex,
I think you missed this disclaimer in
"All values in the example are illustration purpose only"
Generally speaking, there is no guarantee for a point to point link.
Arashmid
-----Original Message-----
From: dmm [mailto:[email protected]] On Behalf Of Alexandre
Petrescu
Sent: 20 August 2018 06:48
To: [email protected]
Subject: Re: [DMM] Fwd: New Version Notification for draft-hmm-dmm-5g-
uplane-analysis-01.txt
Hi, thanks for the draft. I am happy you wrote and published it.
I am looking forward for a packet capture from a live cellular network that
illustrates this outer packet header format described in the draft.
In particular, the Source and Destination IPv6 addresses (not IPv4).
I can suppose that the two addresses would have same prefix, because that
would be a point-to-point link and these links would have same prefix. (i.e. if
the src is 2001:db8:1:1::1 then dst would be
2001:db8:1:1::2 and not 2001:db8:1:2::1).
This is only supposition from my side, because I have never seen a packet
capture of this.
3.5. Packet Format
Figure 4 shows a packet format example of GTP-U over IPv6 that
carries an extension header for QFI and an IPv6 PDU. All values in
the example are illustration purpose only. The encoding of PDU
Session Container for QFI refers to [TS.38.415-3GPP].
0 1 2 3
0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
Outer IPv6 Header
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
|Version| DSCP=EF | Flow Label |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| Payload Length | NxtHdr=17(UDP)| Hop Limit |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| |
+ +
| |
+ Source IPv6 Address +
| 2001:db8:1:1::1 |
+ +
| |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| |
+ +
| |
+ Destination IPv6 Address +
| 2001:db8:1:2::1 |
+ +
| |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
Alex
Le 10/08/2018 à 11:24, Shunsuke Homma a écrit :
Hi DMM folks,
We reflected feedback from 3GPP CT4 on
draft-hmm-dmm-5g-uplane-analysis and uploaded the new version. We
need
more reviews from both IETF and 3GPP for further improvement. We will
appreciate if you can give comments or feedback to this I-D.
Best regards,
Shunsuke
-------- Forwarded Message --------
Subject: New Version Notification for
draft-hmm-dmm-5g-uplane-analysis-01.txt
Date: Fri, 10 Aug 2018 01:44:20 -0700
From: [email protected]
To: [email protected] <[email protected]>, Daniel Voyer
<[email protected]>, Takuya Miyasaka
<[email protected]>, Satoru Matsushima
<[email protected]>, Shunsuke Homma
<[email protected]>
A new version of I-D, draft-hmm-dmm-5g-uplane-analysis-01.txt
has been successfully submitted by Shunsuke Homma and posted to the
IETF repository.
Name: draft-hmm-dmm-5g-uplane-analysis
Revision: 01
Title: User Plane Protocol and Architectural Analysis on 3GPP
5G System Document date: 2018-08-10
Group: Individual Submission
Pages: 30
URL:
https://www.ietf.org/internet-drafts/draft-hmm-dmm-5g-uplane-analysis-
01.txt
Status:
https://datatracker.ietf.org/doc/draft-hmm-dmm-5g-uplane-analysis/
Htmlized:
https://tools.ietf.org/html/draft-hmm-dmm-5g-uplane-analysis-01
Htmlized:
https://datatracker.ietf.org/doc/html/draft-hmm-dmm-5g-uplane-analysis
Diff:
https://www.ietf.org/rfcdiff?url2=draft-hmm-dmm-5g-uplane-analysis-01
Abstract:
This document analyzes the mobile user plane protocol and the
architecture specified in 3GPP 5G documents. The analysis work is
to
clarify those specifications, extract protocol and architectural
requirements and derive evaluation aspects for user plane
protocols
on IETF side. This work is corresponding to the User Plane
Protocol
Study work on 3GPP side.
Please note that it may take a couple of minutes from the time of
submission until the htmlized version and diff are available at
tools.ietf.org.
The IETF Secretariat
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--
----------------------------------
Shunsuke Homma
<[email protected]>
TEL: +81 422 59 3486
FAX: +81 422 60 7460
NTT Network Service Systems Labs.
Musashino city, Tokyo, Japan
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