Indu-Sol PROmesh P20, User Manual

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PROmesh P20 - User Manual 41

VLAN Mapped : Here you can determine a VLAN or a VLAN group for which the spanning tree is
created.
Bridge port configuration
In this menu, you can configure the following settings:

Enable : Enable the settings configured in this menu.

BPDU Guard : The BPDU Guard is a security mechanism of STP and should be used activated
on all Access ports. If these ports receive a BPDU, they are deactivated. Thus network
interference by manipulated BPDUs can be avoided.

Edge port : Term for a port that is connected directly with an end device and not with a further
bridge (a switch). These ports cannot cause any loops and therefore switch immediately into
forwarding mode. The status change of an edge port never leads to a change of the topology. By
specifying edge ports, you can accelerate the convergence time of the redundancy protocol.
o
Forcetrue: The port is configured as edge port by default.
o
Forcefalse: The port is not configured as edge port by default.
o
Auto: The detection as edge port is done automatically.

Point-to-Point : Ports that are connected to at least one additional bridge are called point-to-point
ports. The configuration can be done automatically or manually.
Instance port configuration
In this menu you can select the instances specified in the Instance Configuration menu. The overview
provides the following information:

Enable : Here you can see whether the instance has been enabled.

Instance : Here you can see the specified priority from the Instance Configuration menu.

Priority : You can assign higher priorities to certain ports to influence the design of the tree
structure. Enter a number between 0 and 240. The value has to be a multiple of 16.

Cost configuration : Here you can define the path costs of the transmit bridge at the respective
port to another bridge. Enter a number between 1 and 200.000.000. With this parameter, you can
influence the design of the tree structure.

Cost : The configured costs can be viewed here.

Role : Every port can run in one of the following modes:
o
Root port: A port in forwarding status. shortest path to the root bridge.
o
Designated port: A port in forwarding status that enables communication to other bridges in the
spanning tree.
o
Alternative port: An alternative path to the root bridge, which is additional to the current root
port.
o
Backup port: A backup port that is available via a designated port in the direction of the
branching of the tree structure. Backup ports can exist only there where two ports are