D-Link DES-1210-28/ME - Config Stp Mst_Ports

DES-1210-28/ME Metro Ethernet Managed Switch CLI Reference Guide
116
config stp mst_ports
Purpose To update the port configuration for a MSTP instance.
Syntax
config stp mst_ports <portlist> instance_id <value 0-15>
{internalCost [auto | value 1-200000000] | priority <value 0-240>}
Description
The config stp mst_ports command updates the port configuration
for a STP instance_id. If a loop occurs, the MSTP function uses the
port cost to select an interface to put into the forwarding state (if the
switch isn’t Root). If the switch is Root, then higher priority value for
interfaces will influence on selected ports to be forwarding first at
connected network devices. In instances where the priority value is
identical, the MSTP function implements the lowest port number into
the forwarding state and other interfaces are blocked. Remember
that lower priority values mean higher priorities for forwarding
packets.
Parameters
<portlist> – A port or range of ports to be configured. The port list is
specified by listing switch number and the beginning port number on
that switch, separated by a colon. Then the highest port number of
the range is specified. The beginning and end of the port list range
are separated by a dash.
instance_id <value 0-15> - The value may be between 0 and 15. An
entry of 0 denotes the CIST (Common and Internal Spanning Tree.
internalCost – The relative cost of forwarding packets to specified
ports when an interface is selected within an STP instance. The
default setting is auto. There are two options:
• auto – Specifies setting the quickest route automatically and
optimally for an interface. The default value is derived from
the media speed of the interface.
• value 1-200000000 – Specifies setting the quickest route
when a loop occurs. The value may be in the range of 1-
200000000. A lower internalCost represents a quicker
transmission.
priority <value 0-240> - The priority for the port interface The value
may be between 0 and 240. A lower number denotes a higher
priority. A higher priority designates the interface to forward packets
first.
Restrictions Only administrator or operator-level users can issue this command.
Example usage:
To designate ports 1 through 5 with instance ID 2, to have an auto internalCost and a priority of 16:
DES-1210-28/ME:5# config stp mst_ports 1-5 instance_id 2 internalCost auto
priority 16
Command: config stp mst_ports 1-5 instance_id 2 internalCost auto priority 16
Success.
DES-1210-28/ME:5#