hi everyone,
I am urgergoing a very difficult situation, looking for urgent help from you all, below is the issue,
Cisco 2911/k9 ISR with UC and SEC licenses intergated, FXO and SRE modules are also installed physically, this is serving as VoIP Device, Security gateway, Internet Gateway. this is into production and we don't have physical access of Router, I can connect it via both WAN(public) IP and VPN Client.
recently while monitoring our device I noticed that after executing "write memory" command the outcome is "NVRAM Verification Failed" and also when I am trying to execute "show startup-config" the outcome is "%Error opening nvram:/startup-config (Invalid Checksum)".
I am afraid and not testing its memory using "test momery" because it gives me warning "Testing NVRAM card will remove all files! Continue [y/n] ? "
I took the backup of running configuration (remotely) over VPN Client connection which is of 18kb, I am again worried here if I might loose some keys(VPN Tunnel) or its configurations If i proceed with erasing the conf. and then re-writing it.
please let me know the best to avoid any downtime and break into our services.
thanks
