I am just wondering if there is any 'show' command (except 'traceroute') to verify whether 'mpls propagate-ttl' is on or off
By default, the mpls ip propagate-ttl command is enabled and the IP TTL value is copied to the MPLS TTL field during label imposition.
I am not kidding, but i think that you have no way except to do show run :).
router#sh run | i ttl
no tag-switching ip propagate-ttl forwarded
HTH, please do rate all helpful replies,
"mpls ip propagate-ttl" is enabled by default. The best way to find out whether it is enabled or not is to do a "show runn | incl propagate".
This will tell you whether the TTL propagation is disabled for transit traffic, locally originated traffic or both.
Hope this helps,