On Mon, Mar 31, 2014 at 9:20 AM, Shivaramakrishnan Vaidyanathan
<[email protected]> wrote:
> Thanks a lot Gurucharan.
> I am pretty new to openvswitch.Can you provide the command to achieve this?
> Looking forward to your reply.
The man page says:
....
....
Tunnel Options:
These options apply to interfaces with type of gre, ipsec_gre, gre64,
ipsec_gre64, vxlan, and lisp.
Each tunnel must be uniquely identified by the combination of type,
options:remote_ip, options:local_ip, and options:in_key. If two ports
are defined that are the same except one has an optional identifier and
the other does not, the more specific one is matched first.
options:in_key is considered more specific than options:local_ip if a
port defines one and another port defines the other.
....
...
options : key: optional string
Optional. Shorthand to set in_key and out_key at the same time.
...
...
So you can do something like:
* If you create a new tunnel (the key should be same at both ends and
a different key at the other end):
ovs-vsctl add-port virbr3 gre2 -- set interface gre2 type=gre
options:remote_ip:p.q.r.s options:key=30
(note that your command does not have a '=' and instead has a ':'.
Also your "ovs-vsctl show" does not print any o/p)
* Or just add a key to a existing tunnel
ovs-vsctl set interface gre0 options:key=20
If you can't debug well, start with a simpler configuration. i.e., a
single gre tunnel. Once you get that working, you can build on top of
it.
>
>
> On Mon, Mar 31, 2014 at 12:15 PM, Gurucharan Shetty <[email protected]>
> wrote:
>>
>> On Mon, Mar 31, 2014 at 9:12 AM, Shivaramakrishnan Vaidyanathan
>> <[email protected]> wrote:
>> > So in that case,essentially we cant have multiple gre tunnels?
>> I think you can use unique keys to distinguish (Read "Tunnel Options"
>> in "man ovs-vswitchd.conf.db").
>>
>> > Though I have multiple bridges that vm's to communicate between each
>> > other.
>> > The requirement is I need to have multiple internal bridges for vm's and
>> > just one external bridge.
>> > Is there any alternative?
>> >
>> >
>> > On Mon, Mar 31, 2014 at 11:44 AM, Gurucharan Shetty <[email protected]>
>> > wrote:
>> >>
>> >> On Mon, Mar 31, 2014 at 8:36 AM, Shiva <[email protected]>
>> >> wrote:
>> >> > Hello,
>> >> >
>> >> > I am setting up two gre tunnels between two hosts using the same
>> >> > external
>> >> > bridge.In this case (br1).I use virbr3 and virbr2 for internal
>> >> > communication.
>> >> >
>> >> > This is my config steps:
>> >> > Hypervisor 1:
>> >> > External communication
>> >> > ovs-vsctl add-br br1
>> >> > ovs-vsctl add-port eth0
>> >> > ifconfig br1 p.q.r.s netmask 255.255.255.0
>> >> >
>> >> > Internal bridge for vm communication
>> >> > Tunnel1 :
>> >> >
>> >> > ovs-vsctl add-br virbr3
>> >> > ovs-vsctl show
>> >> > ovs-vsctl add-port virbr3 gre2 -- set interface gre2 type=gre
>> >> > options:remote_ip:a.b.c.d
>> >> >
>> >> > Tunnel2:
>> >> >
>> >> > ovs-vsctl add-br virbr2
>> >> > ovs-vsctl show
>> >> > ovs-vsctl add-port virbr2 gre0 -- set interface gre0 type=gre
>> >> > options:remote_ip:a.b.c.d
>> >> Consider the case for the traffic coming into Hypervisor1. I don't
>> >> think it is possible to figure out which of the two end points the
>> >> packet needs to be delivered to because the 2 gre tunnels are not
>> >> unique.
>> >>
>> >> I think if you delete one of your virbr* in each of the machines, you
>> >> should be able to communicate.
>> >>
>> >>
>> >> >
>> >> >
>> >> > Hypervisor 2:
>> >> > External communication
>> >> > ovs-vsctl add-br br1
>> >> > ovs-vsctl add-port eth0
>> >> > ifconfig br1 a.b.c.d netmask 255.255.255.0
>> >> >
>> >> > Internal bridge for vm communication
>> >> >
>> >> > Tunnel1:
>> >> >
>> >> >
>> >> > ovs-vsctl add-br virbr3
>> >> > ovs-vsctl show
>> >> > ovs-vsctl add-port virbr3 gre2 -- set interface gre2 type=gre
>> >> > options:remote_ip:p.q.r.s
>> >> >
>> >> > Tunnel2:
>> >> >
>> >> > ovs-vsctl add-br virbr2
>> >> > ovs-vsctl show
>> >> > ovs-vsctl add-port virbr3 gre0 -- set interface gre0 type=gre
>> >> > options:remote_ip:p.q.r.s
>> >> >
>> >> >
>> >> > I am not able to communicate outside world from the vm's.I am just
>> >> > able
>> >> > to
>> >> > reach the host on which vm resides and viceversa.Can you please let
>> >> > me
>> >> > know
>> >> > what am i missing here?
>> >> >
>> >> > Your help in this regard is greatly appreciated.
>> >> >
>> >> >
>> >> > _______________________________________________
>> >> > discuss mailing list
>> >> > [email protected]
>> >> > http://openvswitch.org/mailman/listinfo/discuss
>> >> >
>> >
>> >
>
>
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