HP 9304m - Stp Parameters and Defaults

Installation and Getting Started Guide
6 - 2
STP Parameters and Defaults
Table 6.1 lists the default STP states for HP devices.
Table 6.2 lists the default STP bridge parameters. The bridge parameters affect the entire spanning tree. If you
are using MSTP, the parameters affect the VLAN. If you are using SSTP, the parameters affect all VLANs that are
members of the single spanning tree.
Table 6.1: Default STP States
Default STP Type Default STP State Default STP State
of New VLANs
a
a.When you create a port-based VLAN, the new VLAN’s
STP state is the same as the default STP state on the
device. The new VLAN does not inherit the STP state of
the default VLAN.
MSTP Disabled Disabled
Table 6.2: Default STP Bridge Parameters
Parameter Description Default and Valid Values
Forward Delay The period of time a bridge will wait (the listen and learn
period) before beginning to forward data packets.
15 seconds
Possible values: 4 – 30
seconds
Maximum Age The interval a bridge will wait for a hello packet from the
root bridge before initiating a topology change.
20 seconds
Possible values: 6 – 40
seconds
Hello Time The interval of time between each configuration BPDU
sent by the root bridge.
2 seconds
Possible values: 1 – 10
seconds
Priority A parameter used to identify the root bridge in a
spanning tree (instance of STP). The bridge with the
lowest value has the highest priority and is the root.
A higher numerical value means a lower priority; thus,
the highest priority is 0.
32768
Possible values: 0 – 65535