Nortel 2360 Configuration Manual page 205

• WSS redundancy—You can provide redundancy of WSS services by dual-homing the AP to two directly connected
WSSs; or by configuring a Distributed AP configuration either on two or more indirectly connected WSSs, or on a
combination of a directly connected WSS and one or more indirectly connected WSSs. To provide WSS
redundancy on an AP model that has only one AP port, configure a Distributed AP connection on two or more
indirectly connected WSSs.
Bias
On a WSS, configurations for APs have a bias (low or high) associated with them. The default is high. A WSS with high
bias for an AP is preferred over a WSS with low bias for the AP.
If more than one switch has high bias, or the bias for all connections is the same, the switch that has the greatest capacity
to add more active APs is preferred. For example, if one switch has 50 active APs while another switch has 60 active
APs, and both switches are capable of managing 80 active APs, the new AP uses the switch that has only 50 active APs.
Note.
Bias applies only to WSSs that are indirectly attached to the AP through an
intermediate Layer 2 or Layer 3 network. An AP always attempts to boot on AP port 1 first,
and if a WSS is directly attached on AP port 1, the AP boots from it regardless of the bias
settings.
(To set the bias for an AP configuration, see
Dual-homed configuration examples
The following sections show examples of dual-homed configurations. You can use any of these configurations to dual
home an AP model that has two Ethernet ports. AP models with one Ethernet port support only the dual-homing config-
uration in "Dual-homed distributed connections to WSSs on one AP port" (page
Dual-homed direct connections to a single WSS
Figure 2 shows an example of a dual-homed direct connection to one WSS. In this configuration, if the AP's active data
link with the WSS fails, the AP detects the link failure and restarts using the other link on the same switch.
Figure 2. Dual-homed direct connections to a single WSS
AP
Dual-homed direct connections to two WSSs
Figure 3 shows an example of a dual-homed direct connection to two separate WSSs. In this configuration, if the active
data link fails, the AP detects the link failure and restarts using a link to the other switch.
"Changing bias" (page
WSS
Nortel WLAN—Security Switch 2300 Series Configuration Guide
240).)
208).
Configuring APs 205