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2000-A2-GB20-10
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.
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.
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)
NOTE
When the IAD prompts you for input, the current value is
displayed in parentheses. To conveniently accept the current
value, just press Enter.
- 118 -
February 2004
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