ZyXEL Communications 1 - Manual (Page 65)

NetAtlas Enterprise 1.00 User’s Guide
Chapter 5 Status 64
5.2.3 STP Port States
STP assigns five port states (see next table) to eliminate packet looping. A bridge port is not
allowed to go directly from blocking state to forwarding state so as to eliminate transient
loops.
Table 15 STP Port States
PORT STATE DESCRIPTION
Disabled STP is disabled (default).
Blocking Only configuration and management BPDUs are received and processed.
Listening All BPDUs are received and processed.
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.
5.2.4 View STP Status
Follow the steps below to view the STP status of a switch.
1 Click Status and then STP Status.
2 Choose a switch from the list located on the left-hand side of the screen.
Figure 48 Status: STP Status
The following table describes the labels in this screen.
Table 16 Status: STP Status
LABEL DESCRIPTION
STP This field displays Running if STP is activated; otherwise, it displays Unknown.
Bridge Root refers to the base of the spanning tree (the root bridge).
Bridge ID This is the unique identifier for this bridge, consisting of bridge priority plus MAC
address.