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 1810 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 25 Spanning Tree
Table 22 Spanning Tree Fields
DescriptionField
Spanning Tree Bridge Configuration
Enable the Spanning Tree protocol mode globally. This feature is disabled by default.Protocol Mode
Specify the protocol, RSTP or STP. RSTP is set by default.Protocol Version
Specify an STP/RSTP bridge priority value between 0–61440. The default is 32768.Bridge Priority
Interval between periodic transmissions of STP BPDUs by designated ports. The default is 2
seconds.
Hello Time
Delay used by STP bridges to transit root and designated ports to forwarding (used in STP
compatible mode). The default is 15 seconds.
Forward Delay
Number of seconds until the BPDU information is considered to be aged out or invalid. This
value must be <= (FwdDelay-1)*2 and >= (HelloTime+1)*2. The default is 20 seconds.
Max Age
Spanning Tree Interface Configuration
Spanning Tree 37
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