To display the cache timeout value for each multicast route, use the show multicast route extensive command:
user@host> show multicast route extensive
Family: INET
Group: 232.0.0.1
Source: 11.11.11.11/32
Upstream interface: fe-0/2/0.200
Downstream interface list:
fe-0/2/1.210
Downstream interface list rejected by CAC:
fe-0/2/1.220
Session description: Source specific multicast
Statistics: 0 kBps, 0 pps, 0 packets
Next-hop ID: 337
Upstream protocol: PIM
Route state: Active
Forwarding state: Forwarding
Cache lifetime/timeout: never
Wrong incoming interface notifications: 0
For additional information about this show command, including descriptions of the fields, see the JUNOS Routing Protocols and Policies Command Reference.