Cisco Cisco Aironet 1522 Lightweight Outdoor Mesh Access Point Guía De Diseño
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Cisco Mesh Access Points, Design and Deployment Guide, Release 7.0
OL-21848-01
Site Preparation and Planning
Multiple RAPs
If multiple RAPs are to be deployed, the purpose for deploying these RAPs needs to be considered. If
the RAPs are being deployed to provide hardware diversity, the additional RAP(s) should be deployed
on the same channel as the primary RAP to minimize the convergence time in a scenario where the mesh
transfers from one RAP to another. When you plan RAP hardware diversity, the 32 MAPs per RAP
limitation should be remembered.
the RAPs are being deployed to provide hardware diversity, the additional RAP(s) should be deployed
on the same channel as the primary RAP to minimize the convergence time in a scenario where the mesh
transfers from one RAP to another. When you plan RAP hardware diversity, the 32 MAPs per RAP
limitation should be remembered.
If additional RAPs are deployed to primarily provide additional capacity, then the additional RAPs
should be deployed on a different channel than its neighboring RAP to minimize the interference on the
backhaul channels.
should be deployed on a different channel than its neighboring RAP to minimize the interference on the
backhaul channels.
Adding a second RAP on a different channel also reduces the collision domain through channel planning
or through RAP cell splitting. Channel planning allocates different non-overlapping channels to mesh
nodes in the same collision domain to minimize the collision probability. RAP cell splitting is a simple,
yet effective, way to reduce the collision domain. Instead of deploying one RAP with omnidirectional
antennas in a mesh network, two or more RAPs with directional antennas can be deployed. These RAP
collocate with each other and operate on different frequency channels, thus dividing a large collision
domain into several smaller ones that operate independently.
or through RAP cell splitting. Channel planning allocates different non-overlapping channels to mesh
nodes in the same collision domain to minimize the collision probability. RAP cell splitting is a simple,
yet effective, way to reduce the collision domain. Instead of deploying one RAP with omnidirectional
antennas in a mesh network, two or more RAPs with directional antennas can be deployed. These RAP
collocate with each other and operate on different frequency channels, thus dividing a large collision
domain into several smaller ones that operate independently.
If the mesh access point bridging features are being used with multiple RAPs, these RAPs should all be
on the same subnet to ensure that a consistent subnet is provided for bridge clients.
on the same subnet to ensure that a consistent subnet is provided for bridge clients.
If you build your mesh with multiple RAPs on different subnets, MAP convergence times increase if a
MAP has to failover to another RAP on a different subnet. One way to limit this from happening is to
use different BGNs for segments in your network that are separated by subnet boundaries.
MAP has to failover to another RAP on a different subnet. One way to limit this from happening is to
use different BGNs for segments in your network that are separated by subnet boundaries.
Indoor Mesh Interoperability with Outdoor Mesh
Mobility groups can be shared between outdoor mesh networks and indoor WLAN networks. It is also
possible for a single controller to control indoor (1130, 1240) and outdoor mesh access points (1522,
1524) simultaneously. The same WLANs are broadcast out of both indoor and outdoor mesh access
points.
possible for a single controller to control indoor (1130, 1240) and outdoor mesh access points (1522,
1524) simultaneously. The same WLANs are broadcast out of both indoor and outdoor mesh access
points.
Caution
The 1200 series indoor access points in a third-party outdoor enclosure can be deployed for limited
outdoor deployments, such as a simple short haul extension from an indoor WLAN to a hop in a parking
lot. The 1200 access point series (1240, 1250, and 1260) in an outdoor enclosure is recommended
because of its robust environmental and temperature specifications when compared to 1100 access point
series. Additionally 1200 series have connectors to support articulated antennas when the AP is within
an outdoor enclosure. Exercise caution with the SNR values as they may not scale and long-term fades
may take away the links for these APs when compared to a more optimized outdoor 1520 series access
point.
outdoor deployments, such as a simple short haul extension from an indoor WLAN to a hop in a parking
lot. The 1200 access point series (1240, 1250, and 1260) in an outdoor enclosure is recommended
because of its robust environmental and temperature specifications when compared to 1100 access point
series. Additionally 1200 series have connectors to support articulated antennas when the AP is within
an outdoor enclosure. Exercise caution with the SNR values as they may not scale and long-term fades
may take away the links for these APs when compared to a more optimized outdoor 1520 series access
point.
Complete interoperability of indoor mesh access points with the outdoor ones is supported to have
coverage from outdoors into the indoors. We recommend 1100 series for indoor use only, and under no
circumstances should these access points be deployed outdoors even if they are in enclosures.
coverage from outdoors into the indoors. We recommend 1100 series for indoor use only, and under no
circumstances should these access points be deployed outdoors even if they are in enclosures.