HP ProCurve 5300xl Series Management Manual page 230

Spanning-Tree Operation
802.1s Multiple Spanning Tree Protocol (MSTP)
6-62
Syntax: spanning-tree < port-list > < hello-time | path-cost | point-to-point-mac |
priority >
[ hello-time < global | 1 - 10 >
When the switch is the CIST root, this parameter specifies
the interval (in seconds) between periodic BPDU
transmissions by the designated ports. This interval also
applies to all ports in all switches downstream from each
port in the < port-list >. A setting of global indicates that the
ports in < port-list > on the CIST root are using the value set
by the global spanning-tree hello-time value (page 6-60).
When a given switch "X" is not the CIST root, the per-port
hello-time for all active ports on switch "X" is propagated
from the CIST root, and is the same as the hello-time in use
on the CIST root port in the currently active path from
switch "X" to the CIST root. (That is, when switch "X" is
not the CIST root, then the upstream CIST root's port hello-
time setting overrides the hello-time setting configured on
switch "X". (Default Per-Port setting: Use Global. Default
Global Hello-Time: 2.)
[ path-cost < auto | 1..200000000 > ]
Assigns an individual port cost that the switch uses to
determine which ports are forwarding ports in a given
spanning tree. In the default configuration ( auto ) the
switch determines a port's path cost by the port's type:
– 10 Mbps: 2000000
– 100 Mbps: 200000
– 1 Gbps: 20000
Refer to "Note on Path Cost" on page 6-17 for information
on compatibility with devices running 802.1D STP for the
path cost values (Default: Auto.).
point-to-point-mac < force-true | force-false | auto >
This parameter informs the switch of the type of device to
which a specific port connects.
Force-True (default): Indicates a point-to-point link to a
device such as a switch, bridge, or end-node.
Force-False: Indicates a connection to a hub (which is a
shared LAN segment).
Auto: Causes the switch to set Force-False on the port if it
is not running at full duplex. (Connections to hubs are
half-duplex.)