Use this task to configure Spanning Tree settings.
-
For STP Mode, select one of the
following:
- STP: Uses a single spanning tree without regard
to VLANs. After convergence, only the root bridge sends configuration BPDUs,
and other switches only relay those BPDUs.
- RSTP (Rapid STP): Uses a single spanning tree
without regard to VLANs. After convergence, all switches send BPDUs every
two seconds in the event of a physical link failure.
- MSTP (Multiple
STP): Can map a group of VLANs into a single multiple
spanning tree instance (MSTI). MSTP uses BPDUs to exchange information
between spanning-tree compatible devices, to prevent loops in each MSTI by
selecting active and blocked paths. Configure MSTP settings.
Table 1. Settings for MSTP
| Section |
Options |
| MSTP Region |
- Select Use
Default MSTP Region radio button to
use the MAC address of the switch that will be used
as the default MSTP Region
- Select the Use
a custom defined MTSP Region radio
button, to enter a customized region into the text
field.
|
| MSTP Revision |
Enter a value from 0 to 65536 into the text box. 3 is the
default. |
-
Select an STP Bridge
Priority from the drop-down list.
Every switch taking part in
spanning tree has a bridge priority. The switch with the lowest priority becomes
the root bridge. If there's a tie, the switch with the lowest bridge ID number
wins. The ID number is typically derived from a MAC address on the
switch.
-
Set the following STP Timers
parameters:
Forward
Delay: The time the switch spends in the listening and
learning state.
Max
Age: The maximum time before a bridge port saves its
configuration BPDU information.
