[ovs-discuss] GRE tunnel - no ping reply
Luca Prete
luca.prete at garr.it
Fri Mar 1 06:46:37 UTC 2013
To make openflow switches communicates with the controller they should have L3 connectivity, sp they should ping one each other!
Luca P.
Il giorno 01/mar/2013, alle ore 06:14, Jesse Gross <jesse at nicira.com> ha scritto:
> On Thu, Feb 28, 2013 at 8:53 PM, krishna kumar <ipower2 at yahoo.com> wrote:
>> Hi.. I'm relatively new to OVS and GRE tunnel and not sure if my setup is
>> working.
>> My setup is this:
>>
>> 10.x.x.x ---- 50.x.x.x
>> ------------GRE------------------108.x.x.x----192.168.x.x
>>
>> I'm ping 192.168.x.x from 10.x.x.x.
>> Wireshark shows that the ICMP request with GRE encapsulation arrived from
>> 10.x.x.x to 192.168.x.x.
>> I can also see the decapsulated ICMP request in Wireshark. But no ICMP reply
>> is generated, instead a bunch of ARP requests are generated for the 10.x.x.x
>> network which I see in Wireshark on 192.168.x.x host.
>>
>> Is ping supposed to work in this setup above? Is there any other easy way to
>> test if the GRE tunnel is working?
>
> You're trying to ping between two different subnets. You need a
> router in between to do that.
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