Cabletron Systems 7C04-R, 7C03 manual Enabled

Using the 7C0x SmartSwitch Bridge View

The Frames display mode shows the following Bridge Port information:

•Frms In—Displays the total number of frames, including BPDU frames, received at this bridge port from its attached network segment during the last polling interval.

•Frms Out—Displays the total number of frames, including BPDU frames, transmitted or forwarded through this port to its attached network segment during the last polling interval.

•Forwarded—Displays frames forwarded by this bridge port to another bridge port on the device during the last polling interval. You can change this display using the Delta/Percentage button (described in this section). When Delta is selected, this field displays the total number of frames forwarded by this bridge port to another port on the bridge during the last polling interval. When Percentage is selected, this field displays the percentage of all frames received by the port from its network segment that were forwarded to another port on the bridge during the last polling interval.

When the Admin option is selected, the Bridge Port boxes display port Status —whether the port is enabled or disabled — and port State.

Enabled	The port is able to participate in bridging and the
	Spanning Tree Algorithm.
Disabled	The port cannot participate in bridging or Spanning Tree
	operations.

A port’s State indicates whether or not the port is forwarding packets and participating in the exchange of BPDUs. The Spanning Tree Algorithm determines the state of each port in order to maintain an active topology with no data loops. As a port moves from the blocking to the forwarding state, it will remain in each state for the duration of the Forward Delay in order to prevent data loops while the active topology is changing. Possible port states are as follows:

Disabled	The port has been disabled by management; it cannot
	receive or forward traffic, and is not participating in the
	exchange of BPDUs.
Blocking	This port is not forwarding or receiving traffic (and
	therefore no physical address information is added to the
	Filtering Database), but it will still send out and receive
	BPDUs. A port will enter the blocking state for two
	reasons: if it receives information that another bridge is
	the designated bridge to the network segment to which
	this port is attached, or immediately after it has been
	enabled by management.
Listening	This state is entered from the blocking state when the
	STA determines that this port should participate in frame
	relay. The port is processing BPDUs, but is not yet
	forwarding or receiving traffic or adding information to
	the Filtering Database.

Accessing the Bridge Traffic View Window 6-7