ZyXEL PLA450 v2 User Guide - Page 62
Requirements for Roaming, 6.4 Quality of Service
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Chapter 6 Wireless LAN Figure 29 Roaming Example AP 1 X Y AP 2 Y The steps below describe the roaming process. 1 Wireless station Y moves from the coverage area of access point AP 1 to that of access point AP 2. 2 Wireless station Y scans and detects the signal of access point AP 2. 3 Wireless station Y sends an association request to access point AP 2. 4 Access point AP 2 acknowledges the presence of wireless station Y and relays this information to access point AP 1 through the wired LAN. 5 Access point AP 1 updates the new position of wireless station Y. 6.3.1 Requirements for Roaming The following requirements must be met in order for wireless stations to roam between the coverage areas. 1 All the access points must be on the same subnet and configured with the same ESSID. 2 The adjacent access points should use different radio channels when their coverage areas overlap. 3 All access points must use the same port number to relay roaming information. 4 The access points must be connected to the Ethernet and be able to get IP addresses from a DHCP server if using dynamic IP address assignment. 6.4 Quality of Service This section discusses the Quality of Service (QoS) features available on the PLA450. 62 PLA450 User's Guide