Bridge Forwarding Delay; Link Path Cost; Link Port Priority - 3Com 3CRWE876075 User Manual

C 4: S C
HAPTER YSTEM ONFIGURATION
Bridge Forwarding Delay – The maximum time (in seconds) this device waits
before changing states (i.e., discarding to learning to forwarding). This delay is
required because every device must receive information about topology
changes before it starts to forward frames. In addition, each port needs time to
listen for conflicting information that would make it return to a discarding
state; otherwise, temporary data loops might result. (Range: 4-30 seconds)
• Default: 15
• Minimum: The higher of 4 or [(Max. Message Age / 2) + 1]
• Maximum: 30
Link Path Cost – This parameter is used by the STP 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. (Path
cost takes precedence over port priority.)
• Range: 1-65535
• Default: Ethernet interface: 19; Wireless interface: 40
Link Port Priority – Defines the priority used for this port in the Spanning Tree
Protocol. 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. This makes a port with higher priority less likely to be blocked if
the Spanning Tree Protocol is detecting network loops. Where more than one
port is assigned the highest priority, the port with lowest numeric identifier will
be enabled.
• Default: 128
• Range: 0-240, in steps of 16
4-32