After connecting a LAN cable to the Mgmt port and setting the IP through the serial console via 'ESC+(', I was able to successfully configure the IP. Thank you for your guidance.
However, I'm still facing issues with SSH login. From online resources, it seems that for newer i-Series models, there isn't a default AOM account, and one has to be created using the aom_setup_user command. But I couldn't find this command in either the root shell or admin shell for the r2600.
Is there a different approach for the r-series models? Any insights would be highly appreciated.
Note: I haven't registered the license and deployed the tenant yet.