ZyXEL Communications LAYER 3 ES-3124 - Manual (Page 111)

ES-3124 User’s Guide
Chapter 11 Spanning Tree Protocol 109
11.1.4 Multiple RSTP
MRSTP (Multiple RSTP) is ZyXEL’s proprietary feature that is compatible with RSTP and
STP. With MRSTP, you can have more than one spanning tree on your switch and assign
port(s) to each tree. Each spanning tree operates independently with its own bridge
information.
In the following example, there are two RSTP instances (MRSTP 1 and MRSTP2) on switch
A.
To set up MRSTP, activate MRSTP on the switch and specify which port(s) belong to which
spanning tree.
Note: Each port can belong to one STP tree only.
Figure 45 MRSTP Network Example
11.2 Spanning Tree Protocol Main Screen
The switch allows you to configure a single RSTP configuration or you can configure multiple
configurations. Click Advanced Application, Spanning Tree Protocol in the navigation
panel to choose whether you want to configure multiple or a single Spanning Tree Protocol
configuration.
Note: This screen is only available if neither RSTP or MRSTP is active. Once you
select RSTP or MRSTP this screen displays the status of your configuration.
Learning All BPDUs are received and processed. Information frames are submitted to the
learning process but not forwarded.
Forwarding All BPDUs are received and processed. All information frames are received and
forwarded.
Table 23 STP Port States
PORT STATE DESCRIPTION