User's Manual

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Cisco IOS Software Configuration Guide for Cisco Aironet Access Points
OL-11350-01
Chapter 6 Configuring Radio Settings
Enabling and Disabling Public Secure Packet Forwarding
whether multicast packets reach the intended workgroup bridge, so workgroup bridges at the edge of the
wireless device's coverage area might lose IP connectivity. When you treat workgroup bridges as client
devices, you increase performance but reduce reliability.
Note This feature is best suited for use with stationary workgroup bridges. Mobile workgroup bridges might
encounter spots in the wireless device's coverage area where they do not receive multicast packets and
lose communication with the wireless device even though they are still associated to it.
A Cisco Aironet Workgroup Bridge provides a wireless LAN connection for up to eight
Ethernet-enabled devices.
This feature is not supported on the 5-GHz radio.
Beginning in privileged EXEC mode, follow these steps to configure the encapsulation transformation
method:
Use the no form of the command to disable reliable multicast messages to workgroup bridges.
Enabling and Disabling Public Secure Packet Forwarding
Public Secure Packet Forwarding (PSPF) prevents client devices associated to an access point from
inadvertently sharing files or communicating with other client devices associated to the access point. It
provides Internet access to client devices without providing other capabilities of a LAN. This feature is
useful for public wireless networks like those installed in airports or on college campuses.
Note To prevent communication between clients associated to different access points, you must set up
protected ports on the switch to which the wireless devices are connected. See the “Configuring
Protected Ports” section on page 6-29 for instructions on setting up protected ports.
To enable and disable PSPF using CLI commands on the wireless device, you use bridge groups. You
can find a detailed explanation of bridge groups and instructions for implementing them in this
document:
• Cisco IOS Bridging and IBM Networking Configuration Guide, Release 12.2. Click this link to
browse to the Configuring Transparent Bridging chapter:
http://www.cisco.com/univercd/cc/td/doc/product/software/ios122/122cgcr/fibm_c/bcfpart1/bcftb.
htm
You can also enable and disable PSPF using the web-browser interface. The PSPF setting is on the Radio
Settings pages.
Command Purpose
Step 1
configure terminal Enter global configuration mode.
Step 2
interface dot11radio { 0 } Enter interface configuration mode for the 2.4-GHz radio
interface.
Step 3
infrastructure-client Enable reliable multicast messages to workgroup bridges.
Step 4
end Return to privileged EXEC mode.
Step 5
copy running-config startup-config (Optional) Save your entries in the configuration file.