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ONFIGURING
 
THE
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• Priority — Bridge priority is used in selecting the root device, 
root port, and designated port. 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. 
-  Default: 32768
-  Range: 0-61440, in steps of 4096
-  Options: 0, 4096, 8192, 12288, 16384, 20480, 24576, 28672, 
32768, 36864, 40960, 45056, 49152, 53248, 57344, 61440
• Hello Time — Interval (in seconds) at which the switch 
transmits a configuration message. 
- Default: 2
- Minimum: 1 
-  Maximum: The lower of 10 or [(Max. Message Age / 2) -1]
• Maximum Age — The maximum time (in seconds) the switch 
can wait without receiving a configuration message before 
attempting to reconfigure. All device ports (except for 
designated ports) should receive configuration messages at 
regular intervals. Any port that ages out STP information 
(provided in the last configuration message) becomes the 
designated port for the attached LAN. If it is a root port, a new 
root port is selected from among the device ports attached to 
the network. (References to “ports” in this section means 
“interfaces,” which includes both ports and trunks.)
- Default: 20
-  Minimum: The higher of 6 or [2 x (Hello Time + 1)].
-  Maximum: The lower of 40 or [2 x (Forward Delay - 1)]
b_mgmt.book  Page 58  Tuesday, July 8, 2003  5:24 PM