An MX device is configured with two logical systems, R0 and R1, but the user is unable to create both logical systems as NTP servers.

This article clarifies that NTP is supported only for LS#0 (system) and that's the reason it is not possible to create the logical systems as NTP servers.

The lab device is configured with the logical systems as below:

set logical-systems r0 interfaces ge-0/1/0 unit 2 vlan-id 4                                                       
set logical-systems r0 interfaces ge-0/1/0 unit 2 family inet address 10.1.1.1/24                                 
set logical-systems r1 interfaces ge-0/1/1 unit 2 vlan-id 4                                                       
set logical-systems r1 interfaces ge-0/1/1 unit 2 family inet address 10.1.1.2/24  
 
user@host> set cli logical-system r0                                                                          
Logical system: r0   
 
user@host:r0> configure                                                                                       
Entering configuration mode                                                                                       
                                                                                                                  
[edit]                                                                                                            
user@host:r0# set ntp                                                                                         
                      ^
syntax error.                                                                                                     
                                                                                                    
user@host:r0# set ntp?                                                                                        
No valid completions   
                                                                                          
[edit]                                                                                                            
user@host:r0# set system ?                                                                                    
Possible completions:                                                                                             
+ apply-groups         Groups from which to inherit configuration data                                            
+ apply-groups-except  Don't inherit configuration data from these groups                                         
> arp                  ARP settings                                                                               
> processes            Process control                                                                            
> services             System services                                                                            

[edit]                                                                                                            
user@host:r0# set system services ?                                                                           
Possible completions:                                                                                             
+ apply-groups         Groups from which to inherit configuration data                                            
+ apply-groups-except  Don't inherit configuration data from these groups                                         
> dhcp-local-server    Dynamic Host Configuration Protocol server configuration                                   
> dhcp-proxy-client    Dynamic Host Configuration Protocol Proxy client configuration                             
> static-subscribers   Static Subscriber Client configuration                                                     
[edit]                                                                                                            
user@host:r0# set system processes ?                                                                          
Possible completions:                                                                                             
+ apply-groups         Groups from which to inherit configuration data                                            
+ apply-groups-except  Don't inherit configuration data from these groups                                         
> routing              Routing process                                                                            
[edit]                                                                                                            
user@host:r0# exit                                                                                            
Exiting configuration mode                          

Users will not be able to create both logical systems as NTP servers because NTP is supported only for LS#0 (system). There are no plans to change it so far.

2022-08-09: Article visibility modified per request