Optivity Switch Owner's Manual

74 Chapter 4 Using VLAN Manager
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Root
The read-only Root table displays information about the device acting as root
within a selected STG.
To view the root table:
The Root table opens in the contents pane (Figure 27).
Table 22 Status table fields
Field Description
Device IP address of the bridge.
NumPorts Number of ports controlled by this bridging entity.
ProtocolSpecification An indication of which version of the Spanning Tree
Protocol (STP) is operating. The IEEE 802.1d
implementations display ieee8021d.
TimeSinceTopologyChange Time in hundredths of a second since the last time a
topology change was detected by the bridge entity or STG.
TopChanges The number of topology changes detected by this bridge
since the management entity was last reset or initialized.
MaxAge Maximum age of STP information learned from the network
on any port before it is discarded, in units of hundredths of
a second. This is the actual value that the bridge is
currently using. The default value is 2000 (20 seconds).
HelloTime Amount of time in hundredths of a second between
transmission of configuration bridge protocol data units
(BPDUs) by this device on any port when it is the root of
the spanning tree. The default value is 200 (2 seconds).
HoldTime Time interval in hundredths of a second during which no
more than two configuration BPDUs are transmitted by this
device. The default value is 100 (1 second).
ForwardDelay Time interval in hundredths of a second that controls how
fast a port changes its spanning state when moving toward
the Forwarding state. This value determines how long the
port stays in each of the Listening and Learning states,
which precede the Forwarding state. This value is also
used when a topology change is detected and is under
way, to age all dynamic entries in the Forwarding
Database. The default value is 1500 (15 seconds).
In the navigation pane, select Root.