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Chapter 6 Wireless LAN
PLA450 User’s Guide
61
Many types of encryption use a key to protect the information in the wireless network. The
longer the key, the stronger the encryption. Every wireless client in the wireless network must
have the same key.
6.3 Roaming
A wireless station is a device with an IEEE 802.11a/b/g compliant wireless interface. An
access point (AP) acts as a bridge between the wireless and wired networks. An AP creates its
own wireless coverage area. A wireless station can associate with a particular access point
only if it is within the access point’s coverage area.
In a network environment with multiple access points, wireless stations are able to switch from
one access point to another as they move between the coverage areas. This is known as
roaming. As the wireless station moves from place to place, it is responsible for choosing the
most appropriate access point depending on the signal strength, network utilization or other
factors.
The roaming feature on the access points allows the access points to relay information about
the wireless stations to each other. When a wireless station moves from a coverage area to
another, it scans and uses the channel of a new access point, which then informs the other
access points on the LAN about the change. An example is shown in
With roaming, a wireless LAN mobile user enjoys a continuous connection to the wired
network through an access point while moving around the wireless LAN.
Enable roaming to exchange the latest bridge information of all wireless stations between APs
when a wireless station moves between coverage areas. Wireless stations can still associate
with other APs even if you disable roaming. Enabling roaming ensures correct traffic
forwarding (bridge tables are updated) and maximum AP efficiency. The AP deletes records
of wireless stations that associate with other APs (Non-ZyXEL APs may not be able to
perform this).
Summary of Contents for PLA-450 - V3.60
Page 2: ......
Page 7: ...Safety Warnings PLA450 User s Guide 7...
Page 8: ...Safety Warnings PLA450 User s Guide 8...
Page 10: ...Contents Overview PLA450 User s Guide 10...
Page 18: ...List of Figures PLA450 User s Guide 18...
Page 22: ...22...
Page 28: ...Chapter 2 PLA450 User s Guide 28...
Page 34: ...Chapter 3 The ENCRYPT Button PLA450 User s Guide 34...
Page 46: ...Chapter 4 Introducing the Web Configurator PLA450 User s Guide 46...
Page 55: ...55 PART II Network Wireless LAN 57 LAN 81 HomePlug AV 85...
Page 56: ...56...
Page 80: ...Chapter 6 Wireless LAN PLA450 User s Guide 80...
Page 84: ...Chapter 7 LAN PLA450 User s Guide 84...
Page 96: ...96...
Page 110: ...Chapter 11 Tools PLA450 User s Guide 110...
Page 112: ...Chapter 12 Configuration Mode PLA450 User s Guide 112...
Page 114: ...Chapter 13 Language PLA450 User s Guide 114...
Page 122: ...Chapter 14 Troubleshooting PLA450 User s Guide 122...
Page 128: ...128...
Page 176: ...Appendix E Common Services PLA450 User s Guide 176...
Page 180: ...Appendix F Legal Information PLA450 User s Guide 180...
Page 186: ...Appendix G Customer Support PLA450 User s Guide 186...