Mst priority – Microsens MS453490M Management Guide User Manual

Page 765

Advertising
background image

C

HAPTER

33

| Spanning Tree Commands

– 765 –

Each bridge decrements the hop count by one before passing on the BPDU.

When the hop count reaches zero, the message is dropped.

E

XAMPLE

Console(config-mstp)#max-hops 30

Console(config-mstp)#

mst priority

This command configures the priority of a spanning tree instance. Use the

no form to restore the default.

S

YNTAX

mst instance-id priority priority
no mst instance-id priority

instance-id - Instance identifier of the spanning tree.

(Range: 0-4094)
priority - Priority of the a spanning tree instance.

(Range: 0-61440 in steps of 4096; Options: 0, 4096, 8192, 12288,

16384, 20480, 24576, 28672, 32768, 36864, 40960, 45056,

49152, 53248, 57344, 61440)

D

EFAULT

S

ETTING

32768

C

OMMAND

M

ODE

MST Configuration

C

OMMAND

U

SAGE

MST priority is used in selecting the root bridge and alternate bridge of

the specified instance. The device with the highest priority (i.e., lowest

numerical value) becomes the MSTI root device. However, if all devices

have the same priority, the device with the lowest MAC address will

then become the root device.

You can set this switch to act as the MSTI root device by specifying a

priority of 0, or as the MSTI alternate device by specifying a priority of

16384.

E

XAMPLE

Console(config-mstp)#mst 1 priority 4096

Console(config-mstp)#

Advertising