Mellanox MLNX-OS User Manual for SX1018HP Ethernet Managed Blade Switch

Rev 2.10
Mellanox Technologies
433
Mellanox Technologies Confidential
spanning-tree (timers)
spanning-tree [forward-time <time in secs> | hello-time <time in secs> | max-age
<time in secs>]
no spanning-tree [forward-time | hello-time | max-age]
Sets the spanning tree timers.
The no form of the command sets the timer to default.
Syntax Description forward-time Controls how fast a port changes its spanning tree state
from Blocking state to Forwarding state.
Parameter range: 4-30 seconds.
hello-time Determines how often the switch broadcasts its hello
message to other switches when it is the root of the
spanning tree.
Parameter range: 1-2 seconds.
max-age Sets the maximum age allowed for the Spanning Tree
Protocol information learnt from the network on any
port before it is discarded.
Parameter range: 6-40 seconds.
Default forward-time: 15 seconds
hello-time:2 seconds
max-age: 20 seconds
Configuration Mode Config
History 3.1.0000
Role admin
Example
switch (config) # spanning-tree forward-time
switch (config) #
Related Commands show spanning-tree
Note The following formula applies on the spanning tree timers:
2*(ForwardTime -1)>=MaxAgeTime >= 2*(Hello Time + 1)