Re: [openstack-dev] [neutron] VXLAN with single-NIC compute nodes: Avoiding the MTU pitfalls

2015-03-13 Thread Ian Wells
On 12 March 2015 at 05:33, Fredy Neeser fredy.nee...@solnet.ch wrote: 2. I'm using policy routing on my hosts to steer VXLAN traffic (UDP dest. port 4789) to interface br-ex.12 -- all other traffic from 192.168.1.14 is source routed from br-ex.1, presumably because br-ex.1 is a

Re: [openstack-dev] [neutron] VXLAN with single-NIC compute nodes: Avoiding the MTU pitfalls

2015-03-12 Thread Fredy Neeser
On 11.03.2015 19:31, Ian Wells wrote: On 11 March 2015 at 04:27, Fredy Neeser fredy.nee...@solnet.ch mailto:fredy.nee...@solnet.ch wrote: 7: br-ex.1: BROADCAST,MULTICAST,UP,LOWER_UP mtu 1500 qdisc noqueue state UNKNOWN group default link/ether e0:3f:49:b4:7c:a7 brd

Re: [openstack-dev] [neutron] VXLAN with single-NIC compute nodes: Avoiding the MTU pitfalls

2015-03-11 Thread Ian Wells
On 11 March 2015 at 04:27, Fredy Neeser fredy.nee...@solnet.ch wrote: 7: br-ex.1: BROADCAST,MULTICAST,UP,LOWER_UP mtu 1500 qdisc noqueue state UNKNOWN group default link/ether e0:3f:49:b4:7c:a7 brd ff:ff:ff:ff:ff:ff inet 192.168.1.14/24 brd 192.168.1.255 scope global br-ex.1

Re: [openstack-dev] [neutron] VXLAN with single-NIC compute nodes: Avoiding the MTU pitfalls

2015-03-11 Thread Fredy Neeser
[resent with a clarification of what [6] is doing towards EoM] OK, I looked at the devstack patch [6] Configure mtu for ovs with the common protocols but no -- it doesn't do the job for the VLAN-based separation of native and encapsulated traffic, which I'm using in [1] for a clean

Re: [openstack-dev] [neutron] VXLAN with single-NIC compute nodes: Avoiding the MTU pitfalls

2015-03-11 Thread Fredy Neeser
OK, I looked at the devstack patch [6] Configure mtu for ovs with the common protocols but no -- it doesn't do the job for the VLAN-based separation of native and encapsulated traffic, which I'm using in [1] for a clean (correct MTUs ...) VXLAN setup with single-NIC compute nodes. As shown

Re: [openstack-dev] [neutron] VXLAN with single-NIC compute nodes: Avoiding the MTU pitfalls

2015-03-06 Thread Attila Fazekas
Can you check is this patch does the right thing[1]: [1] https://review.openstack.org/#/c/112523/6 - Original Message - From: Fredy Neeser fredy.nee...@solnet.ch To: openstack-dev@lists.openstack.org Sent: Friday, March 6, 2015 6:01:08 PM Subject: [openstack-dev] [neutron] VXLAN with