3Com WL-603 - Manual (Page 111)

Advanced 109
5 Use the Poison Reverse drop-down menu to enable or disable Poison
Reverse on the Router. Enabling Poison Reverse on your Router allows it
to indicate to other RIP-enabled devices that they have both routes that
point to each other, preventing data loops.
6 Use the Authentication Required field to choose the mode of
authentication:
■ None — Switches off authentication on the specified interface.
■
Password — An unencrypted text password that needs to be set on all
RIP-enabled devices connected to this Router. RIP information is not
shared between devices whose passwords do not match.
7 In the Password field, enter the required password.
8 Click Apply.