User's Manual

44 MDS Mercury 16E Technical Manual MDS 05-6302A01, Rev. B
If passwords are managed locally, they can be changed on the Agent (via
the console). Any attempts to change the passwords for the Agent via an
SNMP Manager will fail when the Agent is in this mode. Locally
defined passwords will survive a power-cycle. In either case, the SNMP
Manager needs to know the initial passwords being used in order to
communicate to the Agent. If the Agent's passwords are configured via
the Manager, they can be changed from the Manager. If the passwords
are managed locally, then the Manager must be re-configured with any
password changes in order to continue talking to the Agent.
Password Mode
Management
Changes
When the password management mode is changed, the active passwords
used by the Agent may also change. Some common scenarios are
discussed below:
• Passwords are currently being handled by the Manager. The
assigned passwords are
Microwave (Auth), and Rochester (Priv).
Configuration is changed to manage the passwords locally. The
passwords stored on the radio were
Fairport (Auth), and Church-
ville
(Priv) (if local passwords have never been used, then MDS-
AuthPwd and MDSPrivPwd are used). These passwords will
now be used by the Agent to re-generate keys. The Manager
must know these passwords to communicate with the Agent.
• Passwords are currently managed locally. The local passwords
are Fairport (Auth) and Churchville (Priv). Configuration is
changed to handle the passwords from the Manager. The same
passwords will continue to be used, but now the Manager can
change them.
• Passwords are currently managed locally. The local passwords
are Fairport (Auth) and Churchville (Priv). Passwords are changed
to Brighton (Auth) and Perinton (Priv). The Agent will immedi-
ately generate new keys based on these passwords and start
using them. The Manager will have to be re-configured to use
these new passwords.
• Passwords are currently managed locally. The local passwords
are
Fairport (Auth) and Churchville (Priv). Configuration is
changed to handle the passwords from the Manager. The Man-
ager changes the passwords to Brighton (Auth) and Perinton
(Priv). The radio is then rebooted. After a power-cycle, the radio
uses the passwords stored in flash memory, which are
Fairport
(Auth) and
Churchville (Priv). The Manager must be re-config-
ured to use these new passwords.