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

[Alex]

Hi there,
What is the TTL value in GRE packet header when GRE pkt enters the M7i?
Thanks
Alex

----- Original Message ----- 
From: "Sergey" <a_s_y at sama.ru>
To: <juniper-nsp at puck.nether.net>
Sent: Monday, November 22, 2010 3:10 PM
Subject: Re: [j-nsp] problem with ospf between linux/quagga and JunOS viaGRE 
interface


> 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
> _______________________________________________
> juniper-nsp mailing list juniper-nsp at puck.nether.net
> https://puck.nether.net/mailman/listinfo/juniper-nsp
>