Digital Networks North America DNswitch 800 Manuale Utente
DNswitch 800
Configuring and Monitoring the Switch 25
STA Port Configuration
The following figure and table describe STA configuration for ports.
Figure 3-17. STA Port Configuration
Parameter
Default Description
Fast forwarding mode ENABLED
Allows you to enable or disable fast forwarding for
all ports on the switch.
all ports on the switch.
Priority
128
Defines the priority for the use of a port in the STA
algorithm. If the path cost for all ports on a switch
are the same, the port with the highest priority
(i.e., lowest value) will be configured as an active
link in the spanning tree. Where more than one
port is assigned the highest priority, the port with
lowest numeric identifier will be enabled.
The range is 0 - 255.
algorithm. If the path cost for all ports on a switch
are the same, the port with the highest priority
(i.e., lowest value) will be configured as an active
link in the spanning tree. Where more than one
port is assigned the highest priority, the port with
lowest numeric identifier will be enabled.
The range is 0 - 255.
(Path) Cost
100/19/4
This parameter is used by the STA algorithm to
determine the best path between devices.
Therefore, lower values should be assigned to
ports attached to faster media, and higher values
assigned to ports with slower media.
The default and recommended range is:
Standard Ethernet: 100 (50-600)
Fast Ethernet:
determine the best path between devices.
Therefore, lower values should be assigned to
ports attached to faster media, and higher values
assigned to ports with slower media.
The default and recommended range is:
Standard Ethernet: 100 (50-600)
Fast Ethernet:
19 (10-60)
Gigabit Ethernet: 4 (3-10)
The full range is 1 - 65535.
Note: Path cost takes precedence over port
priority.
The full range is 1 - 65535.
Note: Path cost takes precedence over port
priority.