this is my first real contact with cisco equipment ( i've been playing around with Cisco Packet Tracer ). I have a Cisco 877-K9 that want to use for WAN connection over ADSL2 (POTS) and internal connection so my network has access to the internet.
I have connected to serial console and made the initial configuration. Trying to give the FastEthernet0 an ip address returns me "IP addresses may not be configured on L2 links". Googling most of the results i come up is that i need to configure vlans.
Is that correct and if so how this can be done?
Thanks in advance