User guide

Testing protection switchover Chapter 8: Troubleshooting
8-14
phn-2513_004v000 (Oct 2012)
Check the status of the wireless interface
Check the status of the wireless interface, see Check link status on page 8-11.
If the wireless link quality has been affected by adverse weather it is likely that the
secondary unit will not be able to provide a service either, particularly if an asymmetric
coupler has been used or the secondary unit is providing antenna protection with a less
powerful antenna.
Check the link protection cable
Check the link protection cable is connected as described in Preparing network
connections (1+1 Hot Standby) on page 5-89.
Force a protection switchover
Consider manually initiating a protection switchover as described in Forcing protection
switches on page 7-37, provided the link planning indicates that the units have the
capability of operating a link of satisfactory quality.
This particularly applies where asymmetric couplers have been used, or a secondary
antenna of lower power.
Check the configuration of the active and inactive units
Check that the active and inactive units have a compatible configuration.
They must be configured to have:
• The same link parameters;
• The same radio licence parameters;
• The same radio parameters;
• The same encryption parameters;
• The same management and protection options;
• The same data connectivity parameters
They must be configured to have different IP addresses and different primary/secondary
attributes.