This guide allows devices on the network to be accessed by their short names (as well as their FQDN).
Access router CLI either through the GUI or a SSH client.
This doesn't technically provide short name access, but most devices will automatically try appending the domain-name anyway. To properly do it requires adding static host names with aliases without the domain-name for each device.
override-hostname-ipreplaces the automatic entry of 127.0.0.1 in the hostfile
hostfile-updateautomatically adds dhcp entries into the hostfile
configure set system ip override-hostname-ip <local router IP> set system domain-name <domain-name> set service dhcp-server shared-network-name LAN subnet <subnet IP/24> domain-name <domain-name> set service dhcp-server hostfile-update enable commit save exit