Mst Priority - Edge-Core ES3510MA Management Manual

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

mst priority

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
32768
C
OMMAND
MST Configuration
C
OMMAND
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)#
S
ETTING
M
ODE
U
SAGE
– 765 –
| Spanning Tree Commands
C 33
HAPTER