Siemens RUGGEDCOM ROX II User Manual

Chapter 14
Network Redundancy
RUGGEDCOM ROX II
CLI User Guide
650 Viewing a List of Per-Port Multiple Spanning Tree Instances
Parameter Description
• Backup: The port is attached to a LAN that is serviced by another port on the bridge. It is
not used but is standing by.
• Alternate: The port is attached to a bridge that provides connectivity to the root bridge. It
is not used but is standing by.
• Master: Only exists in Multiple Spanning Tree Protocol (MSTP). The port is a Multiple
Spanning Tree (MST) region boundary port and the single port on the bridge, which
provides connectivity for the Multiple Spanning Tree Instance towards the Common
Spanning Tree (CST) root bridge (i.e. this port is the root port for the Common Spanning
Tree Instance).
This parameter is mandatory.
cost Synopsis:  A 32-bit unsigned integer
The total cost of the path to the root bridge composed of the sum of the costs of each link
in the path. If custom costs have not been configured, 1Gbps ports will contribute a cost
of four, 100 Mbps ports will contribute 19 and 10 Mbps ports will contribute 100. For the
Common and Internal Spanning Tree (CIST) instance of Multiple Spanning Tree Protocol
(MSTP), this is an external root path cost, which is the cost of the path from the Internal
Spanning Tree (IST) root (i.e. regional root) bridge to the Common Spanning Tree (CST) root
(i.e. network "global" root) bridge.
This parameter is mandatory.
desig-bridge-priority Synopsis:  A 32-bit signed integer
The bridge identifier of this bridge.
This parameter is mandatory.
desig-bridge-mac Synopsis:  A string 17 characters long
The bridge identifier of this bridge.
This parameter is mandatory.
Section14.3.7.2
Viewing a List of Per-Port Multiple Spanning Tree Instances
To view a list of the Multiple Spanning Tree Instances (MSTIs) for switched Ethernet ports or Ethernet trunk
interfaces, type:
• For switched Ethernet ports:
show running-config interface switch slot port spanning-tree msti
Where:
▫ slot is the name of the module location
▫ port is the port number (or a list of ports, if aggregated in a port trunk) for the module
• For Ethernet trunk interfaces:
show running-config interface trunk id spanning-tree msti
Where:
▫ id is the ID given to the interface
If instances have been configured, a table or list similar to the following example appears:
ruggedcom# show running-config interface trunks 1 spanning-tree msti | tab
INSTANCE MSTP
ID PRIORITY STP COST RSTP COST
------------------------------------------
1 128 auto-cost auto-cost

Siemens RUGGEDCOM ROX II Specifications

General

Brand	Siemens
Model	RUGGEDCOM ROX II
Category	Network Hardware
Language	English