420
G8264CS Command Reference for ENOS 8.4
MSTP Port Configuration
MSTP
port
parameters
are
used
to
modify
MSTP
operation
on
an
individual
port
basis.
MSTP
parameters
do
not
affect
operation
of
RSTP/PVRST.
For
each
port,
RSTP/PVRST/MSTP
is
turned
on
by
default.
show
spanning
tree
mst
configuration
Displays
the
current
MSTP
settings.
Command
mode:
All
show
spanning
tree
mst
<0
‐
32>
information
Displays
current
MST
information
for
the
specified
instance.
Command
mode:
All
Table 216.
Multiple
Spanning
Tree
Configuration
Options
(continued)
Command Syntax and Usage
Table 217.
MSTP
Port
Configuration
Options
Command Syntax and Usage
spanning
tree
mst
<0
‐
32>
cost
<0
‐
200000000>
Configures
the
port
path
cost
for
the
specified
MSTP
instance.
The
port
path
cost
is
used
to
help
determine
the
designated
port
for
a
segment.
Port
path
cost
is
based
on
the
port
speed,
and
is
calculated
as
follows:
1Gbps
=
20000
10Gbps
=
2000
The
default
value
of
0
(zero)
indicates
that
the
default
path
cost
will
be
computed
for
an
auto
negotiated
link
speed.
Command
mode:
Interface
port/Interface
portchannel
[no]
spanning
tree
mst
<0
‐
32>
enable
Enables
or
disables
the
specified
MSTP
instance
on
the
port.
Command
mode:
Interface
port/Interface
portchannel
spanning
tree
mst
<0
‐
32>
port
priority
<0
‐
240>
Configures
the
port
priority
for
the
specified
MSTP
instance.
The
port
priority
helps
determine
which
bridge
port
becomes
the
designated
port.
In
a
network
topology
that
has
multiple
bridge
ports
connected
to
a
single
segment,
the
port
with
the
lowest
port
priority
becomes
the
designated
port
for
the
segment.
The
range
is
0
to
240,
in
steps
of
16
(0,
16,
32...)
and
the
default
is
128
.
Command
mode:
Interface
port/Interface
portchannel
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