Extreme Networks EPICenter 6.0, Reference Manual

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The Spanning Tree Monitor
EPICenter Reference Guide
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NOTE
If an untagged STP domain spans multiple switches and is configured with different tags on different switches, it
may appear as separate STP domains in EPICenter’s STP Monitor.
Displaying STP VLAN Configurations
Select a specific STP domain in the Component Tree to view summary information about the VLANs in
the selected domain. When you select an STP domain, the STP VLAN view appears, as shown in
Figure 276 .
Figure 276: STP VLANs view
This view shows information about the VLANs in the selected domain.
Root Max Age The maximum allowable age for STP information learned 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.
Root Hello Time The interval between transmission of Configuration BPDUs by the root for this domain.
Value is in seconds.
Root Forward Delay The forward delay time being used by the root for this domain. The forward delay is the
time that a bridge remains in the learning and listening states, not forwarding data.
Value is in seconds.
VLANs The number of VLANs participating in this domain.
Devices The number of devices participating in this domain.
Ports The total number of ports participating in this domain, if the domain is enabled.