Commands To Display The Spanning Tree Bridge Information; Display The Spanning Tree Root Information; Display The Spanning Tree Port Roles And States; Display Detailed Spanning Tree Information - ABB EDS500 Series Function Manual

Functions
2.19.2

Commands to Display the Spanning Tree Bridge Information

Information about the current device is summarized in the bridge information. If MSTP
is used operation every MST instance (MSTI, 1-4094) has additionally its own bridge
information.
Commands to display the spanning tree bridge information
< s h o w s t p b r i d g e >
< s h o w s t p m s t i { 1 - 4 0 9 4 } b r i d g e >
2.19.3

Display the Spanning Tree Root Information

In RSTP and STP networks the root node of the spanning tree is named Root Bridge. In MSTP
networks there are several Root Bridges: for outside the region a CST Root Bridge (common
spanning tree), for inside a region an IST Root Bridge (internal spanning tree, can be identical
to the CST Root Bridge and is then called CIST) and additionally for each MST instance (MSTI,
1-4094) an individual Root Bridge.
Commands to display spanning tree root information
< s h o w s t p r o o t >
< s h o w s t p m s t i { 1 - 4 0 9 4 } r o o t >
2.19.4

Display the Spanning Tree Port Roles and States

The result of a Spanning Tree calculation are port roles and states that are summarized in
a list. When using version MSTP, each additional MST instance (MSTI, 1-4094) has individual
port roles and states that can deviate from those for CIST (Common and Internal Spanning
Tree).
Commands to display the spanning tree port roles and states
< s h o w s t p p o r t - r o l e s >
< s h o w s t p m s t i { 1 - 4 0 9 4 } p o r t - r o l e s >
2.19.5

Display detailed Spanning Tree Information

The information about the current device, the Root Bridge and the port roles and states can
be displayed together and again additionally for each MST instance (MSTI, 1-4094).
Command to display the spanning tree MST settings:
< s h o w s t p [ d e t a i l s ] >
< s h o w s t p m s t i { 1 - 4 0 9 4 } d e t a i l >
2.19.6

Display of Specific Settings for Multiple Spanning Tree (MST)

There are further parameters for operation in the version MSTP:
• MST configuration name
• MST configuration revision
• VLAN-to-MSTI-assignment
• MST configuration hash value
Devices belong to the same MST region if the following parameters are identical:
• MST configuration name
• MST configuration revision
• MST configuration hash value
1KGT151021 V000 1
Spanning Tree Protocol
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