Dell PowerConnect 5224 User Manual - Page 27
Priority, Hello Time, Maximum Age, Maximum: The lower of 10 or [Max. Message Age / 2 -1] - trunk
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- RSTP Mode - If RSTP is using 802.1D BPDUs on a port and receives an RSTP BPDU after the migration delay expires, RSTP restarts the migration delay timer and begins using RSTP BPDUs on that port. • 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 becomes 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)] Addendum to the 3 248 and 52 24 User 's Guides 27