Cabletron Systems CSX400 - Manual (Page 54)

CSX Bridge View
3-34 Creating Bridge Traffic Charts, Graphs and Meters
Designated Cost
The cost of the path from this port to the Root Bridge on the network. If the
highlighted port is the Root Port, the Designated Cost is 0. If this bridge is the
Root Bridge, all its bridge ports have a Designated Cost of 0. This value is
compared to the Root Path Cost Þeld in received conÞguration BPDUs.
Designated Root
The unique Bridge IdentiÞer of the bridge that is assumed to be the Root Bridge
on the network; this information is contained in the ConÞguration BPDUs.
Designated Bridge
Displays the MAC address and priority component of the Bridge ID for the bridge
that is believed to be the Designated Bridge for the network segment associated
with this port.
The Designated Bridge ID, along with the Designated Port and Port IdentiÞer
parameters for the port, is used to determine whether this port should be the
Designated Port for the network segment to which it is attached.
Designated Port
The Port ID of the port on the Designated Bridge for this portÕs segment. The
Designated Port is the bridge port that offers the lowest path cost to the Root
Bridge.
Forward Transitions
The number of times this port has moved from the Learning state to the
Forwarding state since the device was started or since it was last reset.
Changing a Port’s STA Parameters
To change a portÕs Priority or Path Cost:
1. In the scroll list, click mouse button 1 on the port you want to change (use the
scroll bar if necessary to display the desired port). You can only select one
port at a time. The highlighted port’s Spanning Tree parameters appear in the
boxes below the list.
2. Highlight and edit the Priority and Path Cost boxes as required. After you
type in the new value in a box, press Enter or Return on the keyboard.
Creating Bridge Traffic Charts, Graphs and Meters
The Bridge application uses the SPMA Charts, Graphs and Meters tools to depict
bridge statistics describing activity at the bridge-port level. Once running,
however, a pie chart, graph or meter is independent from the application where it
was started. Although the windows you open to create pie charts, graphs and
meters have unique variable lists, the procedures for creating a pie chart, a graph
or a meter are the same.