Nortel Networks Optivity Switch manual Root, Using Vlan Manager Status table fields

74Chapter 4 Using VLAN Manager

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).

Root

The read-only Root table displays information about the device acting as root within a selected STG.

To view the root table:

In the navigation pane, select Root.

The Root table opens in the contents pane (Figure 27).

208963-B