@terziyski you mean one of my switches gives ip 192.168.30.00/25 subnet but when I change the router c80 with Huawei router it works fine and dont give 192.168.30.0/subnet it give 192.168.0.00...

@terziyski All switches are set on dhcp and server 0 set an static ip from c80 and also from c6

@terziyski C80 default ip is 192.168.0.50 and the public IP is 110.39.29.230 which is from isp

@terziyski i have told you a public ip like wan IP 210.56.1.24 and LAN IP is 192.168.10.32

@terziyski 0.50 is an isp provider ip but 30.1 is something different maybe it should give a router tp link C80 i change the router they give me the ip dhcp default which is 0.50 but when i attach...

@terziyski Hi hope the attached diagram is helpful to you there are two ISP connection one is 0.50 and the other is a public IP which I cannot share with you (P2P connection) my issue is if we have a...