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[nvo3] Looking help for vxlan-gpe

杨光 <sunshine723@gmail.com> Mon, 13 April 2020 02:04 UTC

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From: 杨光 <sunshine723@gmail.com>
Date: Mon, 13 Apr 2020 10:04:00 +0800
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Subject: [nvo3] Looking help for vxlan-gpe
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I hope to get the  some help for the vxlan-gpe protocol.

I am Yang guang from a Cloud computing provider in China，and in charge of
the load balance service. We plan to use the vxlan-gpe protocol to carry
some network address information, and cooperate with the NAT function of
virtual switch,  the real server can see the real client‘s address when the
load balance using snat+dnat mode.

Here is the header format

 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
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
|0|0|0|0|I|P|0|0|       Reserved                |   NP = LB 254 |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
|         VXLAN Network Identifier (VNI)        |   Reserved    |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
|   type = v4   |   Length = 3  |   Reserved    |  NP = Eth 03  |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
|                              CIP                              |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
|                              VIP                              |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
|             SPORT             |             DPORT             |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+


Since vxlan-gpe is still in the draft stage, and there is no sample shim
header in the draft, I am not sure whether this custom format conforms to
the regulations and design philosophy. One of my concerns is that the
format changes in future will be extremely complex if it do not meet the
specifications.

This mail was sent once before, and the reason to resend is to make sure it
was delivered successfully, because I received the rejection letter before.

Thank you for your time and consideration
-------
Sincerely Yang guang

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