Cabletron Systems TSX-1620 User Manual
Accessing the Bridge Traffic View Window
3-9
Using the TSX-1620 Bridge View
The Frames/Admin, Source Routing/Transparent, and Delta/Percentage buttons
each let you choose one of the two display modes for the Bridge Port boxes. The
display mode visible on a button is the one not currently selected. Clicking on a
button when the button displays the desired mode type chooses that mode type
for the Bridge Port boxes. For example, the Frames/Admin button will display
Frames
each let you choose one of the two display modes for the Bridge Port boxes. The
display mode visible on a button is the one not currently selected. Clicking on a
button when the button displays the desired mode type chooses that mode type
for the Bridge Port boxes. For example, the Frames/Admin button will display
Frames
when the Admin display mode is in effect and Admin when the Frames
display mode is in effect.
The Frames/Admin button allows you to change the information displayed in the
Bridge Port boxes between traffic statistics (when Frames is selected) and port
state/status (when Admin is selected).
Bridge Port boxes between traffic statistics (when Frames is selected) and port
state/status (when Admin is selected).
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.
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.
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
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.
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.
whether the port is enabled or disabled — and port State.
Enabled
The port is able to participate in bridging and the
Spanning Tree Algorithm.
Spanning Tree Algorithm.
Disabled
The port cannot participate in bridging or Spanning Tree
operations.
operations.
Enabling and disabling a port changes its Port Status, not its Port State.
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:
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.
receive or forward traffic, and is not participating in the
exchange of BPDUs.