: [vpp-dev] one question IP checksum
Thanks a lot, I think I got a better understanding cause of your help. As you
said, the outer udp checksum is optional and often left as 0, is there any
issue if I use VXLAN-GPE and send packet to ip4-input-nochecksum node which
will skip the inner ip checksum
: vpp-dev@lists.fd.io [mailto:vpp-dev@lists.fd.io] On Behalf Of John Lo
(loj) via Lists.Fd.Io
Sent: Monday, October 22, 2018 11:56 PM
To: Zhang, Yuwei1 ; vpp-dev@lists.fd.io
Cc: vpp-dev@lists.fd.io
Subject: Re: [vpp-dev] one question IP checksum
Hi Yuwei,
I did not suggest one can create VXLAN
wei1
Sent: Monday, October 22, 2018 4:50 AM
To: John Lo (loj) ; vpp-dev@lists.fd.io
Subject: RE: [vpp-dev] one question IP checksum
Hi John, thanks for your instructions, I tried to use your method with below
steps:
1) Create tunnel: vppctl create vxlan tunnel src 10.0.0.1 dst 10.0.0.2 vni
24 en
To: Zhang, Yuwei1 ; vpp-dev@lists.fd.io
Cc: vpp-dev@lists.fd.io
Subject: Re: [vpp-dev] one question IP checksum
Hi Yuwei,
I see that you are using VXLAN to carry L3 packets which seems to still have
ethernet header. This is not standard usage of VXLAN so I am not aware of a
way to achieve what
. If
underlay is IPv6, then UDP checksum would be required and VPP would set it on
VXLAN encap.
Regards,
John
From: Zhang, Yuwei1
Sent: Saturday, October 20, 2018 9:58 AM
To: John Lo (loj) ; vpp-dev@lists.fd.io
Cc: Yang, Zhiyong
Subject: RE: [vpp-dev] one question IP checksum
Thanks a lot for your
m: John Lo (loj) [mailto:l...@cisco.com]
Sent: Friday, October 19, 2018 11:04 PM
To: Zhang, Yuwei1 ; vpp-dev@lists.fd.io
Subject: RE: [vpp-dev] one question IP checksum
The IP path after receiving a VXLAN packet is processing the outer IP header
and not the inner one. The payload of VXLAN packet i
@lists.fd.io
Subject: [vpp-dev] one question IP checksum
Hi Guys and VPP maintainers,
When I run VPP in vxlan scenario, I found that when VPP receive a
vxlan packets, after decapsulation, the packet will go into ip-input node
instead of ip-input-nochecksum which means vpp will re-calculate
Hi Guys and VPP maintainers,
When I run VPP in vxlan scenario, I found that when VPP receive a
vxlan packets, after decapsulation, the packet will go into ip-input node
instead of ip-input-nochecksum which means vpp will re-calculate the checksum
and verify it. I think the outer UDP
