Roaming Guidelines - Proxim Harmony 802.11b User Manual

If the cells of multiple Access Points overlap, then the mobile client may switch from
one Access Point to another as it travels throughout the facility. During the hand-off
from one Access Point to another, the mobile client maintains an uninterrupted connec-
tion to the network. This is known as roaming.
Multiple Access Points connected to a common Ethernet network form an Extended
Service Set (ESS). All members of an Extended Service Set are configured with an ID,
known as the ESSID. Mobile clients must be configured with the same ESSID as the
Access Points on the network; a client can only roam between Access Points that share
the same ESSID.

Roaming Guidelines

A Harmony 802.11b PC Card can only roam between Harmony 802.11b
Access Points. An 802.11b PC Card cannot communicate with Harmony
OpenAir Access Points.
All Harmony 802.11b Access Points must have the same ESSID.
All workstations with Harmony 802.11b PC Cards must have the same ESSID
as the Access Points that they will roam between.
If WEP encryption is enabled, then all 802.11b Access Points and PC Cards
must use the same Encryption Key to communicate.
The Access Points' cells must overlap to ensure that there are no gaps in
coverage and to ensure that the roaming client will always have a connection
available.
All Access Points in the same vicinity should use a unique, independent
Channel. There are 3 independent Channels for 802.11b Access Points.
Access Points that use the same Channel should be installed as far away from
each other as possible to reduce potential interference.
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