Hi Raja, Apart the checksum offloading issue, I'm facing another issue, which brings me some questions.
I'm currently trying to use a SI with a mirror policy in a multi node context and it seems that only the traffic of the compute hosting the SI is mirrored, is it normal ? If not, how the mirrored packets will be forwarded from one compute to another one, checking the vrouter code is seems that all the packet are encapsulated thanks to the nh_udp_tunnel, and I do not see how it could work ? maybe I mis-configured the policy ? Thanks -Sylvain ----- Original Message ----- From: "Sylvain Afchain" <[email protected]> To: "Rajagopalan Sivaramakrishnan" <[email protected]> Cc: [email protected] Sent: Friday, September 18, 2015 11:48:39 AM Subject: Re: [opencontrail-dev] Partial checksum issue with mirror SI Hi Raja, So yes I tried to turn off the checksum offload in the VMs and of course it works. I tried with several images (fedora, ubuntu, debian) with different kernels. I'm using a two month old contrail master branch deployment. I'm going to deploy an up to date master version today in order to confirm the issue. Thanks, - Sylvain ----- Original Message ----- From: "Rajagopalan Sivaramakrishnan" <[email protected]> To: "Sylvain Afchain" <[email protected]>, [email protected], "Prasad Miriyala" <[email protected]> Sent: Thursday, September 17, 2015 7:53:40 PM Subject: Re: [opencontrail-dev] Partial checksum issue with mirror SI Hi Sylvain, Does it work when you turn off checksum offload inside the VMs (using ethtool)? What image are you using for the SI VM? Which Contrail release are you using? Raja On 9/17/15, 3:25 AM, "Dev on behalf of Sylvain Afchain" <[email protected] on behalf of [email protected]> wrote: >Hello All, > >I'm currently playing with some Service Instances and I'm facing an issue >using the mirror policy. >So having started a SI with a mirror policy, I'm able to see ICMP traffic >between 2 VMs in the SI VM, but >If I try to use TCP or UDP traffic the mirrored traffic is dropped in the >SI VM with this kernel message: > >skbuff: bad partial csum: csum=144/16 len=128 > >does anyone have an clue on this ? > >Thansk > > -Sylvain > >_______________________________________________ >Dev mailing list >[email protected] >http://lists.opencontrail.org/mailman/listinfo/dev_lists.opencontrail.org _______________________________________________ Dev mailing list [email protected] http://lists.opencontrail.org/mailman/listinfo/dev_lists.opencontrail.org _______________________________________________ Dev mailing list [email protected] http://lists.opencontrail.org/mailman/listinfo/dev_lists.opencontrail.org
