HP PS1810 SERIES, Management And Configuration Manual

Page: 52 / 100

4-10
Switching
Spanning Tree
Spanning Tree
The Rapid Spanning Tree Protocol (RSTP, IEEE 802.1w) reduces the convergence time for network
topology changes to about 3-5 seconds from the 30 seconds or more for the IEEE 802.1D STP standard.
RSTP is intended as a complete replacement for STP, but can still interoperate with switches running
the STP protocol by automatically reconfiguring ports to STP-compliant mode if they detect STP
protocol messages from attached devices.
HP PS1810 series switches support the Spanning Tree versions IEEE 802.1D STP, and 802.1w RSTP in
conformance with the IEEE802.1Q 2005.
To display the Spanning Tree configuration page, click Switching > Spanning Tree in the navigation pane.
Figure 4-7. Spanning Tree
Table 4-7. Spanning Tree Fields
Field Description
Spanning Tree Bridge Configuration
Protocol Mode Enable the Spanning Tree protocol mode globally. This feature is disabled by default.
Protocol Version Specify the protocol, RSTP or STP. RSTP is set by default.
Bridge Priority Specify an STP/RSTP bridge priority value between 0–61440. The default is 32768.
Hello Time Specify an interval between 1 second and 10 seconds for periodic transmissions of STP BPDUs by
designated ports. The default is 2 seconds.
Forward Delay Specify the delay from 4 seconds to 30 seconds used by STP bridges to transit root and designated
ports to forwarding (used in STP compatible mode). The default is 15 seconds.