40
RSTP Mode
: You must first enable STP/RSTP mode, before configuring any related
parameters. Parameter settings required for both STP and RSTP are the same. Note that
802.1d refers to STP mode, while 802.1w refers to faster RSTP mode.
Bridge Configuration
Priority (0-61440)
: RSTP uses bridge ID to determine the root bridge, the bridge with the
highest bridge ID becomes the root bridge. The bridge ID is composed of bridge priority
and bridge MAC address. So that the bridge with the highest priority becomes the highest
bridge ID. If all the bridge ID has the same priority, the bridge with the lowest MAC address
will then become the root bridge.
Note: The bridge priority value must be in multiples of 4096. A device with a lower number
has a higher bridge priority. Ex: 4096 is higher than 32768.
Max Age (6-40)
: Enter a value from 6 to 40 seconds here. This value represents the time
that a bridge will wait without receiving Spanning Tree Protocol configuration messages
before attempting to reconfigure.
If JetNet is not the root bridge, and if it has not received a hello message from the root
bridge in an amount of time equal to Max Age, then JetNet will reconfigure itself as a root
bridge. Once two or more devices on the network are recognized as a root bridge, the
devices will renegotiate to set up a new spanning tree topology.
