You in general don't want to set it to a interface because it is dependant on proxy arp to work but to your issue.
Unless a gig port works different this means that this is a switch port. IE you did not type NO SWITCHPORT on the interface. In general you have to also place a IP address on the interface since it is not much use to turn off the switch port and not have a ip address on it.
If it is a switch port becuase it is something like a trunk then you only option is to use a vlan interface as you route destination. This is also a bad idea since you now have arps possible going out many interfaces.
Best bet is to find a IP address can act as your default route.
This document gives several answers on frequently asked questions for PFRv3 channel state behavior.
Q1: What are all the channel operational states from a BR (border role) perspective and what are the rules/conditions to be in each st...
The need was to reach an host inside a LAN through a VPN connection managed by the LAN gateway (Cisco 1921).
The LAN gateway performs NAT and there was a dedicate nat rule for the host i wanted to reach through VPN.
I couldn't connect to the hos...
We have 3 identical switches configured by someone else and would like to claim some of the Gigabit ports(G1/G2/G3/G4) for use on servers. When we try to change the wiring and configuration, we run in to connectivity issues. Attached is a des...