Session attributes are signaled for configured RSVP-TE LSPs using the session attribute object without resource affinities (that is, LSP_TUNNEL Type).
The ExtremeXOS software uses the setup and hold priority values to preempt established LSPs in order to satisfy bandwidth requests. Lower hold priority LSPs are preempted in order to satisfy the bandwidth request in a path message with a higher setup priority. LSP attributes are configured by setting the priorities for a specific RSVP-TE profile using the command configure mpls rsvp-te lsp profile lsp_profile_name setup-priority priority hold-priority priority and associating the profile to the configured LSP.