On Sat, Oct 05, 2013 at 09:12:43AM +0400, Vasiliy Tolstov wrote:
> 2013/10/4 Ben Pfaff <b...@nicira.com>:
> > You've mentioned that you're working on an ovsdb implementation. If
> > part of this is client bindings for another language (e.g. Java, ...),
> > then I'd like to invite you to consider contributing it to the Open
> > vSwitch project. We'd be happy to include more OVSDB language
> > bindings.
>
>
> Hello, Ben. Yes i'm try to write golang ovsdb package to contol
> vSwitch from my own golang controller =).
Oh, interesting. I don't know much about Go.
> I need to dynamically create gre and vxlan tunnels now.
It seems to be little-known but you can use GRE and VXLAN without
creating a separate interface for each tunnel. The best explanation is
in a commit message:
commit 0ad90c845b7e82090a846fbe9f927e8d1c84cfc9
Author: Jarno Rajahalme <jarno.rajaha...@nsn.com>
Date: Thu May 9 15:24:16 2013 +0300
OpenFlow-level flow-based tunneling support.
Adds tun_src and tun_dst match and set capabilities via new NXM fields
NXM_NX_TUN_IPV4_SRC and NXM_NX_TUN_IPV4_DST. This allows management of
large number of tunnels via the flow tables, without requiring the tunnels
to be pre-configured.
Flow-based tunnels can be configured with options remote_ip=flow and
local_ip=flow. local_ip=flow requires remote_ip=flow. When set, the
tunnel remote IP address and/or local IP address is set from the flow,
instead of the tunnel configuration.
Example:
$ 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"
Signed-off-by: Jarno Rajahalme <jarno.rajaha...@nsn.com>
Signed-off-by: Ben Pfaff <b...@nicira.com>
The one big weakness to this support is that there's currently no way
to enable CFM or BFD without adding an interface.
> When i'm create full support for all ovsdb things i'm glad to
> contribute my work to open vSwitch project.
That sounds nice, thanks!
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