User manual

4 Configuration DES-1210 Metro Ethernet Managed Switch User Manual
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Configuration > Spanning Tree > MSTP Port Information
The MSTP Port Information page can be used to update the port configuration for an MSTI ID. If a loop
occurs, the MSTP function will use the port priority to select an interface to put into the forwarding state. Set
a higher priority value for interfaces to be selected for forwarding first. In instances where the priority value is
identical, the MSTP function will implement the lowest MAC address into the forwarding state and other
interfaces will be blocked.
To View the MSTI settings for a particular port, select the Port number and click Find button. To modify the
settings for a particular MSTI Instance, click Edit button, then modify the MSTP Port Setting and click Apply.
Figure 4.86 - Configuration > Spanning Tree > MST Port Information
Instance ID: Displays the MSTI ID of the instance being configured. An entry of 0 in this field denotes the
CIST (default MSTI).
Internal Path Cost (0=Auto): This parameter is set to represent the relative cost of forwarding packets to
specified ports when an interface is selected within a STP instance. The default setting is 0 (auto).
0 (Auto) - Selecting this parameter for the internal Cost will set quickest route automatically and
optimally for an interface. The default value is derived from the media speed of the interface.
Value 0-2000000 - Selecting this parameter with a value in the range of 0 to 2000000 will set the
quickest route then a loop occurs. A lower Internal cost represents a quicker transmission.
Priority: Enter a value between 0 and 240 to set the priority for the port interface. A higher priority will
designate the interface to forward packets first. A lower number denotes a higher priority.
Configuration > Ethernet OAM > Ethernet OAM Port Settings
The Ethernet OAM Port Settings page allows user to configure the Ethernet OAM settings.
Figure 4.87 - Configuration > Ethernet OAM > Ethernet OAM Port Settings
From Port/To Port: Select a range of ports to be configured.
Mode: Use the drop-down menu to select to operate in either Active or Passive. The default mode is Active.
State: Use the drop-down menu to enable or disable the OAM function.