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NB-30 Bridging
3-8 Enabling and Disabling Bridging
Accessing Bridge Status Window Options
At the top of the Bridge Status window, you can click on Bridge to access a menu
that provides other bridge management options:
¥ The Spanning Tree window, which allows you to set the Spanning Tree
Algorithm parameters for bridging on your NB-30 (see Bridge Spanning Tree,
page 3-17).
¥ The Disable/Enable Bridge options, which allow you to suspend or resume
bridge operations (see Enabling and Disabling Bridging, page 3-8).
¥ A Bridge Performance Graph window and Bridge Summary Statistics
window, which display network statistics Ñ both numerically and graphically
Ñ for trafÞc across the entire bridge (see Bridge Statistics, page 3-9).
You can also access a Performance Graph and Statistics window for each
individual interface by clicking on a port index button to display the port
level management options (see Bridge Statistics, page 3-9).
¥ The Filtering Database window, which lets you conÞgure the NB-30 bridgeÕs
Acquired and Permanent Þltering databases to Þlter or forward trafÞc across
the NB-30 (see Filtering Database, page 3-24).
¥ The Reset Counters, Restore Defaults, and Restart Bridge options, which
allow you to refresh operating parameters at the bridge (see Restoring Bridge
Defaults, page 3-31; Resetting Bridge Counters, page 3-32; or Restarting the
Bridge, page 3-32).
Enabling and Disabling Bridging
When you disable a bridge, you disconnect all its port networks from the bridge
entirely. Its bridge ports do not forward any packets, nor do they participate in
Spanning Tree operations. Nodes connected to the networks can still
communicate with each other, but they canÕt communicate with the bridge and
other networks connected to the bridge. When you enable bridge ports, they
move from the Disabled state through the Learning and Listening states to the
Forwarding or Blocking state (as determined by Spanning Tree).
When you disable bridging across the device, you simultaneously disable
bridging at all ports supported by the device.
To disable bridging across both ports on your NB-30 from the Bridge Status
window:
1. From the Bridge Status window, click on Bridge. A menu will appear.
2. Click on Enable Bridge to restart bridging at the device level, or Disable
Bridge to halt bridging across the entire device.