which type of traffic protection mechanism is used for the LSP?

https://www.juniper.net/techpubs/en_US/junos11.4/topics/concept/mpls-lsp-link-protect-overview-solutions.html

http://www.juniper.net/documentation/en_US/junos13.3/topics/concept/mpls-lsp-multiple-bypass.html

http://www.juniper.net/documentation/en_US/junos13.3/topics/usage-guidelines/mpls-configuring-link-protection-on-interfaces-used-by-lsps.html#id-90675

Type: Bypass LSP

If fast-reroute was up, You would see something along the lines of

24.24.24.0
From: 192.168.1.2, LSPstate: Up, ActiveRoute: 0
LSPname: to-datacenter, LSPpath: Primary
LSPtype: Static Configured
Suggested label received: -, Suggested label sent: –
Recovery label received: -, Recovery label sent: 300528
Resv style: 1 SE, Label in: -, Label out: 300528
Time left: -, Since: Wed Aug 24 11:22:43 2016
Tspec: rate 85Mbps size 85Mbps peak Infbps m 20 M 1500
Port number: sender 3 receiver 8066 protocol 0
FastReroute desired
PATH rcvfrom: localclient
Adspec: sent MTU 1500
Path MTU: received 1500
PATH sentto: 20.0.0.3 (ge-0/0/3.0) 7 pkts
RESV rcvfrom: 20.0.0.3 (ge-0/0/3.0) 7 pkts, Entropy label: No
Explct route: 24.58.0.2
Record route: 20.0.0.3 20.0.0.13 30.0.0.5 30.0.0.15
Detour is Up
Detour Tspec: rate 0bps size 0bps peak Infbps m 20 M 1500
Detour adspec: sent MTU 1500
Path MTU: received 1500
Detour PATH sentto: 20.0.0.1 (ge-0/0/2.0) 4 pkts
Detour RESV rcvfrom: 20.0.0.1 (ge-0/0/2.0) 3 pkts, Entropy label: No
Detour Explct route: 20.0.0.1 20.0.0.7 20.0.0.13 30.0.0.7 30.0.0.13
Detour Record route: 20.0.0.1 20.0.0.7 20.0.0.13 30.0.0.5 30.0.0.15
Detour Label out: 300816

node-link-protection would have a similar output with

user@R1> show mpls lsp extensive
Ingress LSP: 1 sessions

192.168.5.1
From: 192.168.1.1, State: Up , ActiveRoute: 0, LSPname: lsp2-r1-to-r5
ActivePath: via-r2 (primary)
Node/Link protection desired

Secondary would show a up if it was a secondary lsp.