3Com manual 3TR Port Statistics Screen

Port Statistics

The TR Port Statistics screen provides an easy method for viewing individual port performance. See Figure 6-3. TR Port Statistics provide more detailed information on individual ports. This screen also pro- vides access to the Traffic Statistics screen.

To view the TR Port Statistics screen, take these steps from the Switch 2000 TR Main Menu:

1Select Switch Management.

The TR Management screen appears.

2Press [Space Bar] until Port appears.

3Press [Down Arrow] until Statistics highlights.

4Press [Return].

The TR Port Statistics screen appears.

Figure 6-3TR Port Statistics Screen

Port Statistics 6-3

The TR Port Statistics screen displays this information:

Unit ID—The number of the unit with which the port is associated.

Port ID—The number of the port you are viewing.

Link State—The current state of the port you are viewing. The port states are:

■Listening—The state in which all ports are placed while Spanning Tree configures the network topol- ogy. Ports remain in this state until the root bridge is selected. This period should be long enough for a port to hear from all other ports on the switch.

■Learning—The state in which ports receive data on the topology of the network for the purpose of learning the stations that are attached to the port. If the port receives no information that would force it into the blocking state, then it moves on to the forwarding state.

■Forwarding—This state allows the port to per- form standard switching and bridging functions. Packets are received and the port either forwards or discards them based on the address of the packet and the switch’s address table.

■Blocking—In this state, the port continues to receive data on the status of the network topology but does not transmit them. The port also receives no packets nor learns the addresses of stations for forwarding or receiving.

■Disabled—The state in which Spanning Tree has been turned off. Port is disabled by management.