Dell S3100 Command Line Reference Guide for the Series 9.100.1 - Page 1372

hello-time Set the time interval between the generation of the RSTP bridge protocol data units (BPDUs). Syntax hello-time [milli-second] seconds To return to the default value, use the no hello-time command. Parameters seconds milli-second Enter a number as the time interval between transmission of BPDUs. The range is from 1 to 10 seconds. The default is 2 seconds. Enter the keywords milli-second to configure a hello time on the order of milliseconds. The range is from 50 to 950 milliseconds Defaults 2 seconds Command Modes CONFIGURATION RSTP (conf-rstp) Command History This guide is platform-specific. For command information about other platforms, see the relevant Dell Networking OS Command Line Reference Guide. Version 9.10(0.0) 9.8(2.0) 9.8(1.0) 9.8(0.0P5) 9.8(0.0P2) 9.7(0.0) 9.2(1.0) 9.0.2.0 8.3.19.0 8.3.11.1 8.3.7.0 8.3.1.0 7.6.1.0 7.5.1.0 6.2.1.1 Description Introduced on the S3148. Introduced on the S3100 series. Introduced on the Z9100-ON. Introduced on the S4048-ON. Introduced on the S3048-ON. Introduced on the S6000-ON. Introduced on the Z9500. Introduced on the S6000. Introduced on the S4820T. Introduced on the Z9000. Introduced on the S4810. Added the milli-second option to the S-Series. Introduced on the S-Series. Introduced on the C-Series. Introduced on the E-Series. Usage Information The hello time is encoded in BPDUs in increments of 1/256ths of a second. The standard minimum hello time in seconds is 1 second, which is encoded as 256. Millisecond hello times are encoded using values less than 256; the millisecond hello time equals (x/1000)*256. When you configure millisecond hellos, the default hello interval of 2 seconds is still used for edge ports; the millisecond hello interval is not used. Related Commands • forward-delay - changes the wait time before RSTP transitions to the Forwarding state. Rapid Spanning Tree Protocol (RSTP) 1372