Error Code Info

["Roberto Albanese" <albanese@coritel.it>]

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Hi all,
can anyone solve my doubts, please?
I'd like to implement a link-failure functionality in a MPLS architecture
using RSVP. I'd like to do this using a PathErr message i forward towards
the SENDER node of the LSP. In this PathErr i put the only information:
link-failure event occurred to LSP.
I saw that there is an ERROR_SPEC Object with error code and values i can
use, but i haven't found any proposal about what error code to use.
Have you any? Is there a standard error code i haven't seen?
What error code could i use?
If there is not even one proposed  i can use only an unassigned/private
error code. What are the private error codes i can use?

Thanks in advance for your kind answer

Roberto Albanese