ZyXEL Communications ONU-2024 Series, Руководство пользователя

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Chapter 11 Spanning Tree Protocol
ONU User’s Guide
102
11.4 Rapid Spanning Tree Protocol Status
Click Advanced Application > Spanning Tree Protocol in the navigation panel to display
the status screen as shown next.
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This screen is only available after you activate RSTP on the ONU.
Figure 45 Advanced Application > Spanning Tree Protocol > Status: RSTP
The following table describes the labels in this screen.
Table 24 Advanced Application > Spanning Tree Protocol > Status: RSTP
LABEL DESCRIPTION
Bridge Root refers to the base of the spanning tree (the root bridge). Our Bridge is this
ONU. This ONU 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 ONU 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) a switch 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 ONU to the root switch.
Port ID This is the priority and number of the port on the ONU through which this ONU
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.