(Revised 4-9-2013) NT24k Managed Industrial Ethernet Switch User Manual & Installation Guide Page 84 of 132
RSTP – Bridge, Continued …
Root Bridge -
This is the identity and parameters of the RSTP Root Bridge.
Root Identifier Priority:
The Priority of the Root Bridge.
Root Identifier MAC:
The unique MAC of the Root Bridge. Possibly a different network device.
Hello Time (Sec):
The time interval, in seconds, between the transmission of Configuration
BPDUs by Designated Ports.
Forward Delay (Sec):
The time spent, in seconds, by legacy STP Bridges in transitioning Root
and Designated Ports to Forwarding. This delays Port transitions until
other bridges have received spanning tree information.
Max Age (Sec):
For RSTP, this is the maximum hops allowed for any protocol message
before it is discarded and no longer retransmitted.
For STP, this is the maximum time, in seconds, that a bridge will wait for
Configuration BPDUs before deciding it is no longer connected to the root
bridge.
Root Path Cost:
The cost of the path to the Root Bridge via the Root Port of this bridge.
Root Port:
The Root Port of this Bridge. The Root Port provides the lowest cost path
from this Bridge to the Root Bridge.
