● Reaction to events
Rapid spanning tree reacts to events, for example an aborted connection, without delay.
There is no waiting for timers as in spanning tree.
● Counter for the maximum bridge hops
The number of bridge hops a package is allowed to make before it automatically becomes
invalid.
In principle, therefore with rapid spanning tree, alternatives for many parameters are
preconfigured and certain properties of the network structure taken into account to reduce the
reconfiguration time.
Multiple Spanning Tree Protocol (MSTP)
The Multiple Spanning Tree Protocol (MSTP) is a further development of the Rapid Spanning
Tree Protocol. Among other things, it provides the option of operating several RSTP instances
within different VLANs or VLAN groups and, for example, making paths available within the
individual VLANs that the single Rapid Spanning Tree Protocol would globally block.
Common and Internal Spanning Tree (CIST)
CIST identifies the internal instance used by the switch that is comparable in principle with an
internal RSTP instance.
4.8
User management
Overview of user management
Access to the device is managed by configurable user settings. Set up users with a password
for authentication. Assign a role with suitable rights to the users.
The authentication of users can either be performed locally by the device or by an external
RADIUS server. You configure how the authentication is handled on the "Security > AAA >
General" page.
Local logon
The local logging on of users by the device runs as follows:
1. The user logs on with user name and password on the device.
2. The device checks whether an entry exists for the user.
→ If an entry exists, the user is logged in with the rights of the associated role.
→ If no corresponding entry exists, the user is denied access.
Login via an external RADIUS server
RADIUS (Remote Authentication Dial-In User Service) is a protocol for authenticating and
authorizing users by servers on which user data can be stored centrally.
Technical basics
4.8 User management
SCALANCE W1780/W1740 according to IEEE 802.11ac Web Based Management
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Configuration Manual, 11/2019, C79000-G8976-C485-03
