AMX NXA-ENET8-2POE Operation/Reference Manual page 175

Bridge Status parameters (Cont.)
STA Bridges (Cont.)
• Topology Flag
• Topology Change
Last
STP Detailed Bridge Status
Click on a bridge instance under the MSTI field to display detailed information on the selected entry. The
following additional information is displayed.
• Bridge Instance
• Regional Root
• Internal Root Cost The Regional Root Path Cost. For the Regional Root Bridge this is zero. For all
• Topology Change
Count
CIST Ports & Aggregations State
• Port
• Port ID
• Role
• State
• Path Cost
• Edge
• Point2Point
• Uptime
To display an overview of all STP bridge instances, click Monitor, Spanning Tree, Bridge Status.
FIG. 138 Bridge Status
NXA-ENET8-2POE Gigabit Ethernet Layer 2 PoE Switch
The current state of the Topology Change Notification flag (TCN) for this bridge
instance.
Time since the Spanning Tree was last reconfigured.
The Bridge instance - CIST, MST1,
The Bridge ID of the currently elected regional root bridge, inside the MSTP
region of this bridge. (This parameter only applies to the CIST instance.)
other CIST instances in the same MSTP region, it is the sum of the Internal Port
Path Costs on the least cost path to the Internal Root Bridge. (This parameter only
applies to the CIST instance.)
The number of times the Spanning Tree has been reconfigured (during a one-sec-
ond interval).
Port Identifier.
The port identifier as used by the RSTP protocol. This consists of the priority part
and the logical port index of the bridge port.
Roles are assigned according to whether the port is part of the active topology
connecting the bridge to the root bridge (i.e., root port), connecting a LAN through
the bridge to the root bridge (i.e., designated port); or is an alternate or backup
port that may provide connectivity if other bridges, bridge ports, or LANs fail or are
removed.
Displays the current state of this port in the Spanning Tree:
Blocking - Port receives STA configuration messages, but does not forward
packets.
Learning - Port has transmitted configuration messages for an interval set by the
Forward Delay parameter without receiving contradictory information. Port
address table is cleared, and the port begins learning addresses.
Forwarding - Port forwards packets, and continues learning addresses.
The contribution of this port to the path cost of paths towards the spanning tree
root which include this port. This will either be a value computed from the Auto
setting, or any explicitly configured value.
The current RSTP port (operational) Edge Flag. An Edge Port is a switch port to
which no bridges are attached. The flag may be automatically computed or explic-
itly configured. Each Edge Port transitions directly to the Forwarding Port State,
since there is no possibility of it participating in a loop.
Indicates a connection to exactly one other bridge. The flag may be automatically
computed or explicitly configured. The point-to-point properties of a port affect
how fast it can transition RSTP states.
The time since the bridge port was last initialized.
Monitoring the NXA-ENET8-2POE
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