Hello everyone
I have an Arris C3 CMTS that is nat recognizing the cable upstream 4 and 5. Im not sure if this is a configuration issue or it is related with the equipment in self. When I try to setup the upstream interface it shows me the message "!Invalid interface: 4" or "!Invalid interface: 5". I have setup the startup-config file with the necessary to put them work at the boot, but they don't came up. Do you know what could be the problem?
Thank you very much.
Javier.