ZyXEL Communications ONU-2024 Series, User Manual

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Chapter 11 Spanning Tree Protocol
ONU User’s Guide
107
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.
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).
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.
Configuration
Name This field displays the configuration name for this MST region.
Revision Number This field displays the revision number for this MST region.
Configuration
Digest A configuration digest is generated from the VLAN-MSTI mapping information.
This field displays the 16-octet signature that is included in an MSTP BPDU. This
field displays the digest when MSTP is activated on the system.
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.
Instance: These fields display the MSTI to VLAN mapping. In other words, which VLANs run
on each spanning tree instance.
Instance This field displays the MSTI ID.
VLAN This field displays which VLANs are mapped to an MSTI.
MSTI Select the MST instance settings you want to view.
Bridge Root refers to the base of the MST instance. 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.
Internal Cost This is the path cost from the root port in this MST instance to the regional 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 MST instance.
Table 26 Advanced Application > Spanning Tree Protocol > Status: MSTP (continued)
LABEL DESCRIPTION