I am configuring a Cisco SR 520 for a small business network. I successfully configured it and synched to the ADSL (AT&T) line. I had the network up and was configuring NAT. I was able to successfully connect to the Internet, and then I restarted the router. At this point, it did not autonegotiate a DHCP lease to the PC I was using for configuration.
I am no longer able to connect it at all. I tried restarting the router, but this did not correct the issue. I then restarted the router while holding down the reset button with a paper clip, but this did not seem to restore factory defaults since 192.168.75.1 was still not responding to the config assistant or even ping.. I am not able to get connectivity to the router, so I have no way to configure it any longer.
Is there a way to restore factory defaults, or a way to determine how to reset the SR 520 to start the DHCP service again?