User's Manual
Table Of Contents
- Cisco Aironet 1300 Series Bridge Hardware Installation Guide
- Contents
- Preface
- Overview
- Installation Overview
- Mounting and Alignment Overview
- Stacking Bridges
- Configuring the Bridge for the First Time
- Using the Web-Browser Interface
- Using the Command-Line Interface
- Troubleshooting
- Translated Safety Warnings
- Statement 84—Warning Definition
- Statement 245B—Explosive Device Proximity Warning
- Statement 332—Antenna Installation Warning
- Statement 1001—Work During Lightning Activity
- Statement 1004—Installation Instructions
- Statement 1005—Circuit Breaker
- Statement 1024—Ground Conductor
- Statement 1040—Product Disposal
- Statement 1052—Installing and Grounding the Antenna
- Declarations of Conformity and Regulatory Information
- Manufacturers Federal Communication Commission Declaration of Conformity Statement
- Department of Communications—Canada
- European Community, Switzerland, Norway, Iceland, and Liechtenstein
- Declaration of Conformity for RF Exposure
- Guidelines for Operating Cisco Aironet Access Points and Bridges in Japan
- Administrative Rules for Cisco Aironet Bridges in Taiwan
- Bridge Specifications
- Channels and Antenna Settings
- Glossary
- Index
CISCO CONFIDENTIAL - First Draft
4-3
Cisco Aironet 1300 Series Bridge Hardware Installation Guide
OL-5048-01
Chapter 4 Stacking Bridges
Verifying Isolation - TBD
Step 1 Install the link 1 bridges (bridges A and C) normally, but leave room at each site to install the link 2
bridges (bridges B and C).
Step 2 Activate the link 1 bridges, align the antennas, and verify proper operation of the link.
Step 3 At each site location, choose a candidate location for the second bridge that is at least TBD ft (TBD m)
away from the first bridge. Separate the bridges as far as is practical from each other, keeping in mind
that the second antenna must have a clear path to the remote system.
Step 4 At each site location, temporarily install the second link 2 bridge, positioning the antenna toward the
intended location of the corresponding link 2 remote antenna.
Note You can improve system isolation by using different polarizations for the two local antennas. For
example, if the link 1 system has vertical polarization, assemble the link 2 system for horizontal
polarization.
Verifying Isolation - TBD
Isolation measurements are valid only if the link 1 bridges are operating at maximum power. By default,
the bridge operates at maximum power.
To verify signal isolation, refer to Figure 4-1 as you follow these steps:
Step 1 Ensure that the link 1 bridges are operating at full power and bridge A is configured as the root bridge.
Step 2 At Site 1, measure the isolation between bridges A and B:
a. Activate the link 2 bridge (bridge B) as a non-root bridge and let it associate to bridge A (the root
bridge).
b. Observe the bridge LEDs and verify that the RSSI signal level is (–54 dBm to - 53 dBm) or less. If
the RSSI signal exceeds –54 dBm, move the bridge farther away and repeat this procedure.
c. Slowly rotate the bridge B antenna a few degrees to the left and to the right and verify that the RSSI
signal level does not spike above -54 dBm. If the signal peaks above -54 dBm, move the bridge
farther away and repeat this step.
Step 3 Go to the remote Site 2 location to measure the isolation between bridges A and D:
a. Activate the link 2 bridge (bridge D) as a non-root bridge and let bridge D associate to bridge A (the
root bridge).
b. Observe bridge D’s LEDs and align the bridge D antenna with bridge A so that the RSSI signal level is
maximized.
c. When the antennas are fully aligned, if the RSSI signal level is greater than -54 dBm, the bridge sites
are very close. Reduce the output power on all bridges at both sites (bridges A, B, C, and D) to 12
dBm.
d. If you are still unable to reduce the RSSI signal level to -54 dBm, change the polarization of the link
2 bridges (bridges B and D). For example; change the antenna polarization from vertical to
horizontal.
Step 4 At Site 2, measure the isolation between bridge C and D by following these steps:
a. Turn off bridge A for this measurement.