14
RSTP
IEEE 802.1w Rapid Spanning tree protocol (LACP) provides a loop-free
network and redundant links to the core network with rapid convergence to
ensure faster recovery from failed links, enhancing overall network stability
and reliability.
RSTP System Configuration
¾ System Priority: This parameter configures the spanning tree priority
globally for this switch. The device with the highest priority becomes the
STP root device. However, if all devices have the same priority, the device
with the lowest MAC address will then become the root device. Number
between 0 - 61440 in increments of 4096. Therefore, there are 16 distinct
values.
¾ Hello Time: Interval (in seconds) at which the root device transmits a
configuration message (BPDU frame). Number between 1-10 (default is 2).
¾ Max Age – The maximum time (in seconds) a device can wait without
receiving a configuration message before attempting to reconfigure. That
also means the maximum life time for a BPDU frame. Number between 6-40
(default is 20).
¾ Forward Delay: The maximum time (in seconds) the root device will wait
before changing states (i.e., discarding to learning to forwarding). Number
between 4 – 30 (default is 15).
¾ Force Version: Set and show the RSTP protocol to use. Normal - use RSTP,
Compatible - compatible with STP.
Figure 2-6-1