[j-nsp] Build a GRE tunnel on VRRP routers

[Fatiha HOUACINE]

   So,  I  build two GRE on the  Loopback interfaces,

-  If Il use OSPF into the GRE, and define OSPF adjacence  between  tunnel
interfaces ,  there is no need to activate keepalives,  the  faillures  will
be detected  by OSPF process  and will converge ( may be a little more
slowly)  ?

 -  In this case ,   I need to activate 2  or 4  GRE  ?  to deal with each
failure case ?


Thanks



2009/2/23 Sean Clarke <sean at clarke-3.demon.nl>

> GRE keepalives are not supported.
> You'd need to use some dynamic protocol , OSPF for instance, and build GRE
> tunnels based on the dynamically learned addresses (loopback for instance),
> if you want to achieve some sort of dynamic GRE tunnel.
>
>
>
> On 2/23/09 12:52 AM, Stefan Fouant wrote:
>
>> I second the previous email but add that you should make sure you
>> enable GRE keepalives for quick resolution of downed tunnel status.
>>
>> Regards,
>>
>>
>>
>> On 2/22/09, Kevin Loch<kloch at kl.net>  wrote:
>>
>>
>>> Fatiha HOUACINE wrote:
>>>
>>>
>>>> Hi,
>>>>
>>>> I would  like to configure a GRE tunnel between  two couples of VRRP
>>>> redundant routers ,
>>>>
>>>> The problem is that, I can't Use the Virtual IP  to build on the tunnel.
>>>>
>>>> How can I build my GRE in this case, to detect faillure and  interact
>>>> with
>>>> the  VRRP mecanism.
>>>>
>>>>  O      ______________________    O
>>>>  VRRP   ________*GRE*__________    VRRP
>>>>  O                                                  O
>>>>
>>>>
>>> I don't think you can use the vrrp ips as tunnel endpoints but
>>> you could setup two tunnels and use OSPF for failover.  Just make sure
>>> you have static routes for the tunnel endpoints so the ospf learned
>>> routes don't take down the tunnels :)
>>>
>>> - Kevin
>>> _______________________________________________
>>> juniper-nsp mailing list juniper-nsp at puck.nether.net
>>> https://puck.nether.net/mailman/listinfo/juniper-nsp
>>>
>>>
>>>
>>
>>
>>
>
> _______________________________________________
> juniper-nsp mailing list juniper-nsp at puck.nether.net
> https://puck.nether.net/mailman/listinfo/juniper-nsp
>