Extreme Networks EPICenter 6.0, Reference Manual

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The Spanning Tree Monitor
EPICenter Reference Guide
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The panel at the bottom of this view shows summary information about the STP domain and VLAN
with which these devices are associated.
Displaying STP Port Information
Select a device in the Component Tree to view information about the ports on the device that are
members of the selected VLAN and STP domain. When you select a device, the STP Ports view appears,
as shown in
Figure 278 .
Configured Tag The 802.1Q tag of one of the VLANs in the domain, as configured by the user.
Root Indicates whether this device is currently the STP root bridge for this domain (Yes or
No).
Root Port The port with the best path to the root bridge. It this device is the root bridge, this will
be zero.
Root Path Cost The cost of the path from this bridge to the root bridge. If this device is the root bridge,
the cost will be zero.
Designated Bridge Indicates whether this device is a designated bridge (transmits configuration BPDUs to
other bridges on any of its ports).
Priority The bridge priority of this bridge for this STP domain.
Max Age The maximum allowable age for STP information as determined by the root for this
domain. If this age is reached, the current information is discarded and the Spanning
Tree is recalculated. Value is in seconds.
Hello Time The interval between transmission of Configuration BPDUs by the root for this domain.
Value is in seconds.
Forward Delay The actual forward delay time as determined by the root for this STP domain. Value is
in seconds.
Hold Time The time during which no more than two configuration BPDUs can be transmitted by
this node. Value is in seconds.
Ports The number of ports on this bridge participating in this VLAN in this domain, if the
domain is enabled. This will be zero if the STP domain is disabled on the bridge.