Gigabit Ethernet Switch User’s Guide
50
Using the Console Interface
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Root Port
Read-only object identifies the port (on the
bridge) that offers the least path cost from the bridge to
the root bridge. In the event of a network loop, data
packets will pass through the root port.
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Max Age(Sec)
Read-only object indicates the maximum
age of STP information learned from the network (on any
port) before it is discarded.
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Forward Delay(sec)
Read-only object indicates how fast
any port on the bridge can change its spanning state when
moving towards the forwarding state. The value
determines how long the port stays in each of the listening
and learning states, which precede the forwarding state.
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Hold Time(Sec)
Read-only object displays the time interval
during which no more than two configuration BPDUs shall be
transmitted by the bridge.
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Root Priority
Read-only object displays the priority
number of the root bridge of the Spanning Tree. The value
is used in conjunction with the bridge MAC address to set
the bridge ID, which in turn is used when determining the
root bridge of a multibridged network. The root bridge is
responsible for processing data packets when network
loops occur. The smaller the number set, the higher the
bridge priority is. The higher the bridge priority, the more
chance the bridge has of becoming the root bridge. A
bridge priority ranges from 0 to 65535, with 0 being the
highest priority.
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Max Age(6-40 Sec)
Maximum Age is a read-write object
that can be set from 6 to 40 seconds. At the end of the
Maximum Age, if a BPDU has still not been received from
the Root ridge, your Switch will start sending its own
BPDU to all other switches for permission to become the
Root Bridge. If it turns out that your Switch has the
lowest Bridge Identifier, it will become the Root Bridge.