[j-nsp] problem with ospf between linux/quagga and JunOS via GRE interface

[Sergey]

On Monday 22 November 2010, Sergey wrote:
> On Friday 19 November 2010, Sergey wrote:
> 
> > I attempt to configure OSPF via gre tunnel. Tunnel works now (tested
> > by ping/telnet/ssh), but OSPF no. I see OSPF Helo in GRE on Linux side:
>  
> I made a simple configuration. Linux box connected to M7i directly now.
> And I tried NBMA OSPF. It does not work also. JunOS ignores OSPF traffic
> from Linux via GRE tunnel. :-(

Hm... I found more with direct connection:

17:32:59.376930 IP y.y.y.169 > z.z.z.170: GREv0, length 68: IP x.x.x.189 > 224.0.0.5: OSPFv2, Hello, length 44
17:32:59.377243 IP z.z.z.170 > y.y.y.169: ICMP time exceeded in-transit, length 36

17:33:09.377277 IP y.y.y.169 > z.z.z.170: GREv0, length 68: IP x.x.x.189 > 224.0.0.5: OSPFv2, Hello, length 44
17:33:09.377573 IP z.z.z.170 > y.y.y.169: ICMP time exceeded in-transit, length 36

y.y.y.169 - Linux
z.z.z.170 - JunOS
x.x.x.188/30 - in tunnel

This same with "ip ospf network non-broadcast" (nbma in JunOS):

18:04:13.293867 IP y.y.y.169 > z.z.z.170: GREv0, length 68: IP .x.x.189 > x.x.x.190: OSPFv2, Hello, length 44
18:04:13.294318 IP z.z.z.170 > y.y.y.169: ICMP time exceeded in-transit, length 36

Why is "time exceeded in-transit" happens ?

-- 
Regards,
Sergey