Finding DHCP IP address

Finding DHCP IP address

From any client in the same subnet

You can know the DHCP IP address for the unit from any device in the same subnet by checking the arp table

For Linux OS

run nmap scan (nmap x.x.x.*) where x.x.x are the first 3 digits from your DHCP subnet
Look into the arp table (arp -n | grep xx:xx:xx:xx:xx:xx ) where xx:xx:xx:xx:xx:xx is the ethernet MAC address

For Windows OS

ping the subnet gateway (ping x.x.x.x)
Look into the arp table (arp -a) and search for the unit ethernet MAC address

From Layer 3 device

You can check the arp table and find the IP address using the ethernet MAC address in the network router

Cisco switches: show ip arp
HP switches: show arp
Huawei switches: display arp all

The command and the steps will be different depending on your vendor

Using Network A

Network A is per-configured with the fixed IP 10.0.3.1 and could be used for initial setup or rescue situations

Connect PC with ethernet cable directly to Network A port.
Assign static IP address in the network 10.0.3.x /8 for the PC
Access the unit ssh yatebts@10.0.3.1 -p 54321
Become root (su) where the password is the serial number of the unit.
Check the interfaces IP address (if config)