ZyXEL Communications OLT2406 - Configure Multiple Spanning Tree Protocol

Chapter 14 Spanning Tree Protocol
OLT2406 User’s Guide
137
Figure 85 Advanced Application > Spanning Tree Protocol > Status: RSTP
The following table describes the labels in this screen.
14.6 Configure Multiple Spanning Tree Protocol
To configure MSTP, click MSTP in the Advanced Application > Spanning Tree Protocol screen. See
Multiple STP on page 133 for more information on MSTP.
Table 40 Advanced Application > Spanning Tree Protocol > Status: RSTP
LABEL DESCRIPTION
Configuration Click Configuration to specify which STP mode you want to activate. Click RSTP to edit RSTP
settings on the OLT.
Bridge Root refers to the base of the spanning tree (the root bridge). Our Bridge is this switch. This OLT
may also be the root bridge.
Bridge ID This is the unique identifier for this bridge, consisting of bridge priority plus MAC address. This ID
is the same for Root and Our Bridge if the OLT is the root switch.
Hello Time
(second)
This is the time interval (in seconds) at which the root switch transmits a configuration
message. The root bridge determines Hello Time, Max Age and Forwarding Delay.
Max Age (second) This is the maximum time (in seconds) the OLT can wait without receiving a configuration
message before attempting to reconfigure.
Forwarding Delay
(second)
This is the time (in seconds) the root switch will wait before changing states (that is, listening to
learning to forwarding).
Note: The listening state does not exist in RSTP.
Cost to Bridge This is the path cost from the root port on this OLT to the root switch.
Port ID This is the priority and number of the port on the OLT through which this OLT must
communicate with the root of the Spanning Tree.
Topology
Changed Times
This is the number of times the spanning tree has been reconfigured.
Time Since Last
Change
This is the time since the spanning tree was last reconfigured.