So I think I'm getting a better grasp on it but still a lot of questions. I saw this in a commit:
$ ovs-vsctl add-port br0 gre -- set Interface gre ofport_request=1 type=gre options:remote_ip=flow options:key=flow $ ovs-ofctl add-flow br0 "in_port=LOCAL actions=set_tunnel:1,set_field:192.168.0.1->tun_dst,output:1" $ ovs-ofctl add-flow br0 "in_port=1 tun_src=192.168.0.1 tun_id=1 actions=LOCAL" What I'm trying to understand is, if I have two servers: Host 1 eth0 192.168.1.1/24 lxcbr0 10.0.1.1/24 Host 2 eth0 192.168.2.1/24 lxcbr0 10.0.1.2/24 with br0 being a OVS bridge and an interface port for lxcbr0 Would I make rules like this? Host 1 $ ovs-vsctl add-port br0 vxlan0 -- set Interface vxlan0 type=vxlan options:key=flow options:remote_ip=flow ofport_request=11 $ ovs-ofctl add-flow br0 "in_port=LOCAL actions=set_tunnel:11,set_field:192.168.1.1->tun_dst,output:11" $ ovs-ofctl add-flow br0 "in_port=11 tun_src=192.168.1.1 tun_id=11 actions=LOCAL" Host 2 $ ovs-vsctl add-port br0 vxlan0 -- set Interface vxlan0 type=vxlan options:key=flow options:remote_ip=flow ofport_request=21 $ ovs-ofctl add-flow br0 "in_port=LOCAL actions=set_tunnel:21,set_field:192.168.2.1->tun_dst,output:21" $ ovs-ofctl add-flow br0 "in_port=21 tun_src=192.168.2.1 tun_id=21 actions=LOCAL" I tested this and it didn't work so I'm not sure if I got src/dst wrong or something else. On Tue, Apr 5, 2016 at 11:55 PM, Koaps Freeman <koapsfree...@gmail.com> wrote: > Hello all, > > I'm trying to figure out how to get OpenFlow working against a bunch of > servers. We have about 18 servers that use a Open vSwitch bridge with GRE > ports to mesh together to create a large /16 network that LXC uses. > > I've read and tested most things I've found but a lot of examples are for > mininet or handful of servers, nothing larger than 3. > > I'm trying to understand how to build OpenFlow rules so that all my linux > bridges can talk to each other and allow connections for services running > in LXC. > > My bridge setup is similar to this: > > https://wiredcraft.com/blog/multi-host-docker-network/ > > And I tried following: > > http://networkstatic.net/setting-overlays-open-vswitch/ > > and > > http://blog.devnu11.net/2015/09/openvswitch-and-openflow/ > > The best I've been able to figure out so far is having something like: > > in_port=local,actions=output:1,output:2, > output:3,output:4,output:5,output:6,output:7,output:8 > in_port=1,actions=output:local > in_port=2,actions=output:local > in_port=3,actions=output:local > in_port=4,actions=output:local > in_port=5,actions=output:local > in_port=6,actions=output:local > in_port=7,actions=output:local > in_port=8,actions=output:local > > Which allows pings, but not services like ssh, seems like I'm getting > triple the GRE overhead (about 70 bytes) > > Does anyone have any examples for large overlay network build using > OpenFlow and Open vSwitch? > > Thanks > -- --------- Blog: http://nullworks.wordpress.com/ Github: https://github.com/koaps
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