ZyXEL 91-005-124003B Datasheet download pdf (Page 56)

G-1000 User’s Guide

56 Chapter 6 Wireless LAN

Figure 15 Roaming Example

The steps below describe the roaming process.

1 As wireless station Y moves from the coverage area of access point AP 1 to that of access

point

2 AP 2, it scans and uses the signal of access point AP 2.

3 Access point AP 2 acknowledges the presence of wireless station Y and relays this

information to access point AP 1 through the wired LAN.

4 Access point AP 1 updates the new position of wireless station.

5 Wireless station Y sends a request to access point AP 2 for reauthentication.

6.4.1 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 If IEEE 802.1x user authentication is enabled and to be done locally on the access point,

the new access point must have the user profile for the wireless station.

3 The adjacent access points should use different radio channels when their coverage areas

overlap.

4 All access points must use the same port number to relay roaming information.

5 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.

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ZyXEL 91-005-124003B Datasheet Page 56