There may be instances where due to some connectivity issues, you are unable to remotely login into the secondary node on an SRX cluster.
In the absence of a console connection to the secondary, it is still possible to log into the secondary node from the primary node and run CLI commands without having to dispatch a technician to the site.
On the branch SRX devices, this can be achieved by the command:
{primary:node0}
lab@host-At> request routing-engine login node 1
--- JUNOS 10.1R3.7 built 2010-011-10 04:15:10 UTC
{secondary:node1}
lab@host-B>
On the high-end SRX devices, you will need to be in the shell and run the following command:
root@host-A% rlogin -T node1