This router permits to do some things (i. e. configuration and diagnostics) via command line (by Telnet; the default password is 1234).
E. g., you can set the Ethernet port mode manually.
$ telnet 192.168.1.1 Trying 192.168.1.1... Connected to 192.168.1.1. Escape character is '^]'. Password: **** Copyright (c) 1994 - 2010 ZyXEL Communications Corp. P660RT2> ether driver config Usage: driver config [0|1=auto|normal] [0|1=10|100] [0|1=HD|FD] <ch-name> P660RT2>
P660RT2> ether driver config 1 0 1 enet0
P660RT2> sys reboot Connection closed by foreign host.
P660RT2> exit Connection closed by foreign host.
- the <Backspace> key doesn't work as it should for the router's CLI, but you can use <←> (left arrow) key instead;
- after you enter the Ethernet configuration command, the router may become unresponsive for a couple (or dozen) of seconds;
- Ethernet configuration is saved into the non-volatile memory, and persists after reboot;
- incorrect configuration (or one incompatible with other network equipment) may result in the router becoming unresponsive, seemingly hung-up and unaccessible via its sole Ethernet port;
- you can reset it to the factory settings using the "RESET" button hole at its back;
- hence, please back up your current router configuration (e. g. via the router's web interface) before touching the settings.
- ZyXEL Prestige 650M-6x ADSL Modem User's Guide
- ZyXEL P660RT2 EE manuals