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DES-3500 Layer 2 Fast Ethernet Switch CLI Reference Manual
84
config stp mst_config_id
Description This command will uniquely identify the MSTP configuration
currently configured on the Switch. Information entered here will
be attached to BPDU packets as an identifier for the MSTP region
to which it belongs. Switches having the same revision_level and
name will be considered as part of the same MSTP region.
Parameters
revision_level <int 0-65535>– Enter a number between 0 and
65535 to identify the MSTP region. This value, along with the
name will identify the MSTP region configured on the Switch. The
default setting is 0.
name <string> - Enter an alphanumeric string of up to 32
characters to uniquely identify the MSTP region on the Switch.
This name, along with the revision_level value will identify the
MSTP region configured on the Switch. If no name is entered, the
default name will be the MAC address of the device.
Restrictions Only Administrator and Operator-level users can issue this
command.
Example usage:
To configure the MSTP region of the Switch with revision_level 10 and the name “Trinity”:
DES-3526:admin#config stp mst_config_id revision_level 10
name Trinity
Command : config stp mst_config_id revision_level 10 name
Trinity
Success.
DES-3526:admin#
config stp mst_ports
Purpose Used to update the port configuration for a MSTP instance.
Syntax
config stp mst_ports <portlist> instance_id <value 0-4>
{internalCost [auto | <value 1-20000000>] priority <value 0-240>
Description
This command will update the port configuration for a STP instance_id.
If a loop occurs, the MSTP function will use the port priority to select an
interface to put into the forwarding state. Set a higher priority value for
interfaces to be selected for forwarding first. In instances where the
priority value is identical, the MSTP function will implement the lowest
MAC address into the forwarding state and other interfaces will be
blocked. Remember that lower priority values mean higher priorities for
forwarding packets.
Parameters
<portlist> - Specifies a port or range of ports to be configured.
instance_id <value 0-4> - Enter a numerical value between 0 and 4 to
identify the instance_id previously configured on the Switch. An entry of
0 will denote the CIST (Common and Internal Spanning Tree.
internalCost – This parameter is set to represent the relative cost of
forwarding packets to specified ports when an interface is selected
within a STP instance. The default setting is auto. There are two
options:
auto – Selecting this parameter for the internalCost will set quickest
route automatically and optimally for an interface. The default
value is derived from the media speed of the interface.
value 1-2000000 – Selecting this parameter with a value in the range
of 1-2000000 will set the quickest route when a loop occurs. A
lower internalCost represents a quicker transmission.