Cambium Networks PTP 820 Series, User Manual, Page: 124 / 1149

Chapter 2: Getting Started Configuring Unit Redundancy for the PTP 820G
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3. Lockout
4. Radio Loss of Frame (LOF) on active unit
5. Change request from the remote unit. This takes place in the event of radio LOF on both units; a change
request is sent to the active unit on the other side of the link.
6. Loss of Carrier (LOC) in any of the Ethernet interfaces or Loss of Signal (LOS) in any of the TDM interfaces
7. Manual switch
LOC takes place if the Admin status of the interface is Enabled and the Operational status is Down. If the interface
is closed as a result of ASP, the interface is
not considered to be in LOC state, and switchover is not triggered.
Following switchover triggered by LOC, there is an automatic timeout of one minute before any further switchover
can take place due to LOC.
At any point, you can manually switch to the standby unit, provided that the highest protection fault level in the
standby unit is no higher than the highest protection fault level on the active unit.
You can also perform a force switch to the standby unit, even if the protection fault level is higher in the standby
unit. Force switch also implements lockout.
To perform a manual switch or force switch:
1. Select Platform > Management > Unit Redundancy . The Unit Redundancy page opens.
2. Click Manual Switch or Force Switch .
3. Confirm the action in the confirmation window that appears.
Performing Lockout
At any point, you can perform lockout, which prevents switchover to the standby unit in all cases other than a
force switch.
To perform lockout:
1. Select Platform > Management > Unit Redundancy . The Unit Redundancy page opens.
2. In the Lockout field, select on .
3. Click Apply .
To release lockout, select off in the Lockout field and then click Apply .
Disabling Unit Redundancy
You can disable unit redundancy at any time.
To disable protection:
1. Select Platform > Management > Unit Redundancy . The Unit Redundancy page opens.
2. Select Disable in the Protection Admin field.
3. Click Apply .
If in-band management is being used, unit redundancy must be disabled in the following order to ensure that
management is not lost:
1. Disable unit redundancy in the active unit of the remote pair. The link remains up and no switchover takes
place.