Should a ‘Lan2 Network Interface’ be the same (default 192.168.101.1) on all APs in a cluster?
Yes. The LAN2 IP address is the AP’s local network with the AP as the gateway. Each LUID will be the next IP adress, i.e. LUID2 is 192.168.101.2, LUID3 is 192.168.101.3, etc, etc.
this is useful if you have an SM, say it’s LUID3 that won’t respond you can telnet to the AP on it’s IP address (example 10.0.3.1), and then telnet to the SM on 192.168.101.3.
The LAN2 IP address is also by the AP for updating the SM’s.
I’ve understand that it doesn’t matter be the LAN2 IP address different on cluster APs or not.
Correct, the LAN2 IP address is the IP address of that AP’s network only and does not route outside of that AP’s group of SM’s.
So, if you have 10 AP’s and they all have the LAN2 IP address of 192.168.101.1 it’s OK. As a matter of fact, don’t change it.