[mpls-linux-general] how to change the ttl when switching from mpls to ip

[Irina D. <dum...@gm...>]

hello,
i've run the tests with 2 LERs and one LSR and I've observed that the TTL i=
s
decremented on the MPLS link, but it is disregarded in the Egress router,so
the IP packet leaves with the TTL it had when it entered the MPLS
network.(the MPLS network is seen like one hop).
How can i change the TTL in the MPLS Egress node?(so that the TTL from MPLS
packets is copied in the TTL field of IP packets. )

I've tried with the option "no_propagate_ttl" : mpls nhlfe change key 0x3
no_propagate_ttl, but i've observed that at the LER ,it doesn't copy the TT=
L
field from the IP packet and the MPLS packets leave with the TTL=3D255.



PS: i've used your advice with the exemple with 2 LERs and 1 LSR and it
works.
Thank you very much