Re: [ovs-discuss] Ping Drop Problem

2017-05-25 Thread Justin Pettit
Well, it's hard to know, since your description doesn't describe your topology, configuration, etc. That said, I guess I would start with tcpdump or flow counts to see where packets appear to be getting dropped and why. --Justin > On May 25, 2017, at 6:03 PM, Gale Price

Re: [ovs-discuss] Ping Drop Problem

2017-05-25 Thread Gale Price
Where would you suggest I start looking? Sent from my iPhone > On May 25, 2017, at 8:39 PM, Justin Pettit wrote: > > >> On May 25, 2017, at 11:11 AM, Gale Price wrote: >> >> I am using ovs on a Fedora 20 KVM Host with 6 defined vlans >> >> I am having a

Re: [ovs-discuss] Ping Drop Problem

2017-05-25 Thread Justin Pettit
> On May 25, 2017, at 11:11 AM, Gale Price wrote: > > I am using ovs on a Fedora 20 KVM Host with 6 defined vlans > > I am having a problem where when I stop any VM I lose connectivity to all > other VM’s for about 6-7 Pings. > Then everything starts working again. > >

Re: [ovs-discuss] OVS-DPDK in OpenStack network node

2017-05-25 Thread Justin Pettit
> On May 25, 2017, at 2:08 PM, Пономарёв Вадим wrote: > > Hi all. > > I am setting up a network node for the OpenStack cluster (mitaka) in the > classic scenario with OpenvSwitch >

Re: [ovs-discuss] SYN packet mirroring

2017-05-25 Thread Ben Pfaff
On Thu, May 25, 2017 at 10:26:29AM -0700, Justin Pettit wrote: > > > On May 25, 2017, at 2:10 AM, Avi Cohen (A) wrote: > > > > Hi All, > > I need to capture all received SYN packets from all interfaces and to > > mirror/output to a specific interface in addition to the

Re: [ovs-discuss] Openvswitch linux nat issue (ver 2.7.0 and linux 4.9.x)

2017-05-25 Thread akshay6 agarwal
Hi Aaron Thanks I see there are 2 approaches as mentioned by you 1. Regarding the first I assume u mean creating another netns and creating peers between ethwan1 and veth1 Say we have another netns lying outside ovs whose one interface (say veth1 lying inside netns test) is linked to ovs

[ovs-discuss] SYN packet mirroring

2017-05-25 Thread Avi Cohen (A)
Hi All, I need to capture all received SYN packets from all interfaces and to mirror/output to a specific interface in addition to the operational interface that these packets should be forwarded. Can I do it with a single dpctl add-flow cli command ? and not modify the 'operational' flows

Re: [ovs-discuss] OVS vs OVS-DPDK

2017-05-25 Thread Avi Cohen (A)
I found this article very relevant to this issue: http://porto.polito.it/2616822/1/2015_Chain_performance.pdf especially it says that for the vhost-net interface used for standard OVS: "the transmission of a batch of packets from a VM causes a VM exit; this means that the CPU stops to