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2000-A2-GB20-10 - 118 - February 2004
This chapter describes how to configure the IAD as a bridge. A bridge is a
device that connects and passes packets between two network segments
that use the same communications protocol. A router generally improves
overall efficiency for a complex network, but a bridge provides better
speed and flexibility for the overall network.
Bridges operate at the data link layer (Layer 2) of the OSI reference model.
In general, a bridge filters, forwards or floods an incoming frame based on
the MAC address of that frame.
This chapter contains the following topics:
Basic Bridge Setup Tasks (page 119)
Using the Bridge Configuration Menu (page 120)
Enabling and Disabling Bridging Globally (page 121)
Enabling and Disabling Bridging by Port (page 121)
Configuring the Bridge Aging Timer (page 122)
Enabling and Disabling Spanning Tree Globally (page 123)
Enabling and Disabling Spanning Tree by Port (page 123)
Configuring Spanning Tree Bridge Priority (page 124)
Configuring Spanning Tree Port Priority (page 124)
Configuring Spanning Tree Hello Time (page 125)
Configuring Spanning Tree Max Age (page 125)
Configuring Spanning Tree Forward Delay (page 125)
Configuring Spanning Tree Path Cost (page 125)
Deleting a Bridge Forwarding Database Entry (page 126)
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NOTE
It is recommended that bridged network architecture be
thoroughly understood prior to configuring the IAD.
Suggested reading: “Interconnections: Bridges and Routers”
by Radia Perlman, Addison-Wesley, 1992.
NOTE
When the IAD prompts you for input, the current value is
displayed in parentheses. To conveniently accept the current
value, just press Enter.