DSNL521I `csect-name` INVALID DDF BSDS VALUES DETECTED (PORT=`port`,RESPORT=`rport` SECPORT=`sport`).

Explanation
  Db2 encountered
invalid values for the TCP/IP port numbers in the DDF record of the
BSDS. Valid TCP/IP port numbers must obey the following rules:  
If PORT or SECPORT is non-zero, RESPORT must also be non-zero.

If RESPORT is non-zero, PORT or SECPORT must also be non-zero.

RESPORT must not specify the same value as PORT and SECPORT

Variable
Description

port

The TCP/IP port number used by this Db2 subsystem
to accept incoming DRDA SQL
connection requests.

rport

The TCP/IP port number used by this Db2 subsystem
to accept incoming two-phase commit resynchronization requests.

sport

The TCP/IP port number used by this Db2 subsystem
to accept incoming secure DRDA connection
requests.

System action
  DDF startup terminates abnormally.

System programmer response
  Use the Change Log Inventory utility
(DSNJU003) to correct the TCP/IP port numbers used by Db2. 

DSNL521I csect-name INVALID DDF BSDS VALUES DETECTED (PORT=port,RESPORT=rport SECPORT=sport).

Explanation

System action

System programmer response

DSNL521I `csect-name` INVALID DDF BSDS VALUES DETECTED (PORT=`port`,RESPORT=`rport` SECPORT=`sport`).