I am needing to change the internal IP scope for my network, however, when I make the change in my DCHP server I cannot change the Interface IP for my ASA 5510. Any ideas?
I have tried editing the Inside Interface Ethernet 0/1 AFTER the DHCP scope change and I lose communication along with several other errors. I have tried to edit the Inside Interface Ethernet 0/1 BEFORE the DHCP scope change and the same problems occur.
I have also tried disabling the Interface before making the change, however that didn't work either. I am guessing that there is a different area / way to change the IP for the Inside Interface Ethernet 0/1 than what I am doing.... any help would be greatly appreciated.
Thank you in advance!
I am assuming that you are using ASDM to access the firewall and making
changes in the ASDM. Please follow the steps below:
1> Through the ASDM, delete the DHCP scope on the firewall
2> Add the new IP range to the allowed addresses that can access ASDM
through HTTP (http 0 0 inside is a better option)
3> Now change the IP address on the inside interface
4> Configure a PC statically so that it has an IP in the same range as the
ASA's inside IP
5> Now access the ASA through the new IP from the statically configured PC
6> Now reconfigure the DHCP scope
Hope this helps.