When using point-to-point wireless bridges, two LANs can be located up to 40
km (25 miles) apart, as shown in Figure
. However, the
antennas must have line-of-site with each other. Obstacles such as buildings,
trees, and hills will cause communication problems. The activity will
demonstrate the necessity for line-of-sight between bridges.
In this
configuration, the Ethernet segments in both buildings act as if they are a
single segment. The bridge does not add to the Ethernet repeater count because
this segment is viewed by the network as a cable.
Set one bridge to Root = ON and the other to Root = OFF, to
enable the bridges to connect to each other.
Many corporations would
like to have more bandwidth between two locations, than the 11 Mbps provided by
the 802.11b standard. Currently, with Cisco IOS, it is possible to use Fast
Etherchannel or multi-link trunking, to bond or aggregate up to three bridges
together. This gives the customer the potential for 33 Mbps. This is
illustrated by Figure
.