Redundancy
HMG-838PT & HMG-838EPT Web Configuration 7-14
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.)
Topology Flag: The current state of the Topology Change Notification flag for this bridge instance.
Topology Change Last: The time since this spanning tree was last configured.
CIST Ports & Aggregations State
Port: Display the port number.
Port ID: The port identifier used by the RSTP protocol. This port ID contains the priority and the port number.
Role: The role assigned by Spanning Tree Algorithm. Roles can be “Designated Port”, “Backup Port”, “Root Port”.
State: Display the current state of a port.
Blocking: Ports only receive BPDU messages but do not forward them.
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: Ports forward packets and continue to learn addresses.
Edge: Display whether this port is an edge port or not.
Point-to-Point: Display whether this point is in point-to-point connection or not. This can be both automatically
and manually configured.
Uptime: The time since the bridge port was last initialized.
7-3.7 Port Status
STP Port Status:
Port: The port number.
CIST Role: The role assigned by Spanning Tree Algorithm. Roles can be “Designated Port”, “Backup Port”,
“Root Port” or “Non-STP”.
CIST State: Display the current state of a port. The CIST state must be one of the following:
Discarding: Ports only receive BPDU messages but do not forward them.
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: Ports forward packets and continue to learn addresses.
Uptime: The time since the bridge port was last initialized.
7-3.8 Port Statistics
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