Quick question: Mikrotik 5-port RB750 with fibre connection via VLAN, and a local 192.168.2.0/24 subnet on switch ports 2-5 one of which leads to a wifi base-station with DHCP.
The router’s IP needs to be changed as part of the subnet change to 192.168.3.0/24.
Firewall rules in place allowing traffic between the router and LAN (switch) interface.
What order should this change be approached in? Just trying hard to NOT be locked out and need to reconfigure completely!
My inclination:
0. Enable safe mode
DHCP pool change
Address change of LAN subnet (IP->Address list) from .2.0 to .3.0
Update Firewall rule to allow admin from LAN IPs (management restricted by IP)
Remember you can manage routerboards by mac-winbox, or RoMON (if enabled on Tools > RoMON) i.e., in pure layer 2 mode, even if the router hasn’t any IPs assigned, or you change ips/routing while managing the router, your connection won’t be dropped.
You can also assign multiple IPs to a given interface, then delete/disable the “old” ones afterwards.
If you’re changing a DHCP server, you missed a crucial point: IP > DHCP Server > Networks tab, you should also update any entry to reflect the new network range, new gateway, new DNS ips, etc.
Thank you. It all seemed to go well, and thanks also for spotting the missing DHCP config. I did actually notice that but you mentioning it prompted a double-check, which is always useful.