ZyXEL Communications OLT2406, User Manual

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Chapter 63 Spanning Tree Protocol
OLT2406 User’s Guide
479
This example shows the current CIST configuration (MSTP instance 0).
The following table describes the labels in this display.
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.
msti This field displays the MSTI ID.
vlans mapped This field displays which VLANs are mapped to an MSTI.
OLT2406# show mstp instance 0
Bridge Info: MSTID: 0
(a)BridgeID: 8000-001349aefb7a
(b)TimeSinceTopoChange: 756003
(c)TopoChangeCount: 0
(d)TopoChange: 0
(e)DesignatedRoot: 8000-001349aefb7a
(f)RootPathCost: 0
(g)RootPort: 0x0000
(h)RootMaxAge: 20 (seconds)
(i)RootHelloTime: 2 (seconds)
(j)RootForwardDelay: 15 (seconds)
(k)BridgeMaxAge: 20 (seconds)
(l)BridgeHelloTime: 2 (seconds)
(m)BridgeForwardDelay: 15 (seconds)
(n)ForceVersion: mstp
(o)TransmissionLimit: 3
(p)CIST_RRootID: 8000-001349aefb7a
(q)CIST_RRootPathCost: 0
Table 240 show mstp instance
LABEL DESCRIPTION
MSTID This field displays the MSTI ID.
BridgeID This field displays the unique identifier for this bridge, consisting of bridge priority plus
MAC address.
TimeSinceTopoChange This field displays the time since the spanning tree was last reconfigured.
TopoChangeCount This field displays the number of times the spanning tree has been reconfigured.
TopoChange This field indicates whether or not the current topology is stable.
0 : The current topology is stable.
1 : The current topology is changing.
DesignatedRoot This field displays the unique identifier for the root bridge, consisting of bridge priority
plus MAC address.
RootPathCost This field displays the path cost from the root port on this OLT to the root switch.
RootPort This field displays the priority and number of the port on the OLT through which this OLT
must communicate with the root of the Spanning Tree.
Table 239 show mstp (continued)
LABEL DESCRIPTION