151
■
BPDU Handling
— Determines how BPDU packets are managed
when STP is disabled on the port or device. BPDUs are used to
transmit spanning tree information. The possible field values are:
■
Filtering
— Filters BPDU packets when spanning tree is disabled on
an interface. This is the default value.
■
Flooding
— Floods BPDU packets when spanning tree is disabled
on an interface.
■
Path Cost Default Values
— Specifies the method used to assign
default path cost to STP ports. The possible field values are:
■
Short
— Specifies 1 through 65,535 range for port path cost. This
is the default value.
■
Long
— Specifies 1 through 200,000,000 range for port path cost.
The default path cost assigned to an interface varies according to
the selected method (
Hello Time
,
Max Age
, or
Forward Delay
).
Bridge Settings
■
Priority
— Specifies the bridge priority value. When switches or
bridges are running STP, each is assigned a priority. After exchanging
BPDUs, the device with the lowest priority value becomes the Root
Bridge. The field range is 0-61440
.
The default value is 32768. The
port priority value is provided in increments of 4096.
■
Hello Time
— Specifies the device Hello Time. The Hello Time
indicates the amount of time in seconds a Root Bridge waits between
configuration messages. The default is 2 seconds.
■
Max Age
— Specifies the device Maximum Age Time. The Maximum
Age Time is the amount of time in seconds a bridge waits before
sending configuration messages. The default Maximum Age Time is
20 seconds.
■
Forward Delay
— Specifies the device Forward Delay Time. The
Forward Delay Time is the amount of time in seconds a bridge remains
in a listening and learning state before forwarding packets. The
default is 15 seconds.
