Restarting CPF In Top Secret If Down Or CPF Node Inactive

Products

• Top Secret for z/OS
• Top Secret for z/VM

Issue/Introduction

If CPF (Command Propagation Facility) comes down or a CPF node becomes inactive, what are the steps to restart/reconnect it?

Resolution

A TSS MODIFY STATUS(CPF)  command can be issued to check the status of the CPF connection.

1. If the connection is down, make sure the ENF started task is up on each side of the CPF connection.
2. If ENF is up on both sides of the CPF connection, issue a TSS MODIFY CPFNODE(cpdnode=REFRESH)
3. If the REFRESH doesn't help, try a TSS MODIFY CPF(OFF) followed by TSS MODIFY CPF(ON) on each side of the CPF connection.
4. Issue a TSS MODIFY STATUS(CPF) connection again on each side of the CPF nodes to determine, if the connection is up.
5. If the CPF connection is still not up, recycle ENF on both sides and do the TSS MODIFY CPF(OFF) and CPF(ON) again on both sides of the CPF connection. 
6. If that doesn't help, the last thing try is recycle the Top Secret address space on each side of the CPF connection. It must be done at one system at a time using the TSS MODIFY STATUS(CPF) to check the status of the link. If the problem is resolved, it is not needed to recycle the Top Secret address space on the other side of the CPF connection.