I have a Cisco 837 router and IOS 12.3(2)XE4.
I would like to have Ethernet subinterfaces but I don't know if it's possible.
I try to create a new subinterface but the IOS answers me with this message:
Router(config)#int e0 Router(config-if)#int e0.1 Router(config-subif)#ip address 192.168.1.1 255.255.255.0
% Configuring IP routing on a LAN subinterface is only allowed if that subinterface is already configured as part of an IEEE 802.10, IEEE 802.1Q, or ISL vLAN.
and the suinterface remains without the ip address.
Does anyone know if it's possible to create Ethernet subinterfaces on small routers like the Cisco 837?