Sta Port Configuration - Alcatel OmniStack 8008 User Manual

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STA Port Configuration

The following figure and table describe STA configuration for ports.
Parameter
Fast forwarding mode
Priority
(Path) Cost
FastForwarding
3-20
Default Description
ENABLED Allows you to enable or disable fast forwarding for all
ports on the switch.
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.
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:
Gigabit Ethernet:
The full range is 0 - 65535.
Note: Path cost takes precedence over port priority.
ENABLED This parameter is used to enable/disabled the Fast
Spanning Tree mode for the port. In this mode, ports
skip the Blocked, Listening and Learning states and
proceed straight to Forwarding.
FastForwarding enables end-node workstations and
servers to overcome time-out problems when the
Spanning Tree Algorithm is implemented in a network.
Therefore, FastForwarding should only be enabled for
ports that are connected to an end-node device.
19 (10~60)
4 (3~10)