Chapter 3 Featured Functions CST Configuration 3-47 Description Factory Default Bridge Priority Each switch or bridge is assigned a priority when they are running STP. After the devices exchange BPDUs, the lowest priority value becomes the root bridge. Enter the bridge priority value for the CIST. Enter a number that is a multiple of 4096 and it must be in the range of 0 to 61440. 32768 Bridge Max Age (secs) Enter the maximum age time for the CIST in seconds. This time is the period that a STP bridge or switch waits before implementing a topological change. The device will recognize itself as a root if it doesn’t receive a hello message in the time of Bridge Max Age.
Enter a number in the range of 6 to 40 seconds, considering that the period needs to be less than or equal to (2 * Bridge Forward Delay) – 1 and greater than or equal to 2 * (Bridge Hello Time +1). 20 Bridge Hello Time (secs) The switch hello time for the CIST. This time is the period in seconds that a root bridge waits between configuration messages. The value is fixed at 2 seconds. 2