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Cisco HWIC-4ESW and HWIC-D-9ESW EtherSwitch Interface Cards

How to Configure EtherSwitch HWICs

Cisco IOS Release 12.3(8)T4

OL-6454-01

DETAILED STEPS

To disable the frame forwarding ability, use the no bridge bridge-group address mac-address global

configuration command.

Adjusting Spanning-Tree Parameters

You might need to adjust certain spanning-tree parameters if the default values are not suitable for your

switch configuration. Parameters affecting the entire spanning tree are configured with variations of the

bridge global configuration command. Interface-specific parameters are configured with variations of

the bridge-group interface configuration command.

You can adjust spanning-tree parameters by performing any of the tasks in these sections:

• Changing the Switch Priority, page 54

• Changing the Interface Priority, page 54

• Assigning a Path Cost, page 55

• Adjusting BPDU Intervals, page 56

• Disabling the Spanning Tree on an Interface, page 58

Note Only network administrators with a good understanding of how switches and STP function should

make adjustments to spanning-tree parameters. Poorly planned adjustments can have a negative

impact on performance. A good source on switching is the IEEE 802.1d specification; for more

information, refer to the “References and Recommended Reading” appendix in the Cisco IOS

Configuration Fundamentals Command Reference, Release 12.2.

Command Purpose

Step 1

configure terminal

Enters global configuration mode.

Step 2

bridge

bridge-group

address

mac-address

{forward | discard}

[

interface-id

]

Specifies the MAC address to discard or forward.

• For bridge-group, specify the bridge group number. The range is 1

to 255.

• For address mac-address, specify the MAC-layer destination

address to be filtered.

• Specify forward if you want the frame destined to the specified

interface to be forwarded. Specify discard if you want the frame to

be discarded.

• (Optional) For interface-id, specify the interface on which the

address can be reached.

Step 3

end

Returns to privileged EXEC mode.

Step 4

show running-config

Verifies your entry.

Step 5

copy running-config startup-config

(Optional) Saves your entry in the configuration file.