I need to create a virtual interface on a router for an ISP modem to provide internet access. The ISP has provided the IP, mask, and gateway for the modem. However, what will the IP address need to be for the interface on the router? Do I just choose the next available 3rd octet address? Example:
IP address: 192.168.2.2
description ISP Modem
encapsulation dot1q 100
ip address 192.168.2.3 255.255.255.0
Would this be correct?
Usually you would receive it via dhcp allocation so set you interface for dhcp and see if you do indeed receive addressing but prior to this did they specify what kind of virtual interface this needs to be or did your just select .100
Hi Paul - I'm not sure if the modem will be static or DHCP. They wanted us to set the interface beforehand, but we can plug a laptop into the model and see what we get. The .100 interface is part of a standard config they sent us. They have all of the config info, but the ip and mask for the modem is left blank.
Thanks for the reply.
i am guessing it’s gojng to be dhcp give that the address range is private