gre tunnel over redundant links - failover not working

[lanzailan]

Hi all,

I try to establish gre tunnel over redundant links, if the primary link down the traffics will redirect to the backup link.

But now it doesn't work as I expected. I tried qualified next-hop also not working and the keepalive timer for gr interface is not supported in srx platform. I was wondering if there is other option to make it work.

thanks.

[dfex]

Configure a loopback interface and source the tunnel from that.  As long as both links have a route to the loopback, this should work.

Cheers,

Ben

[lanzailan]

Hi Ben,

thanks for the reply, but the thing is my ISP block LAN ip address.... that is why i need to configure gre in onder for the LAN on the both side will able to communicate.

[dfex]

In that case, you can create two GRE tunnels and run either RIP or OSPF over them - use metric/cost to bias your traffic via the preferred GRE tunnel while both sites are up.

Hope this helps