Hello,
Installed new DB2 V9.1 on a new DB2 system on zos 1.9 lpar. Unable to connect to remote DB2(Linux) systems.
Defined Dbtest on location table, ping to ip for dbtest is responding, but from spufi, get -30081
DSNT408I SQLCODE = -30081, ERROR: COMMUNICATIONS ERROR DETECTED. API=,
LOCATION=, FUNCTION= ERROR CODES=
DSNT418I SQLSTATE = 08001 SQLSTATE RETURN CODE
DSNT415I SQLERRP = DSNLIENO SQL PROCEDURE DETECTING ERROR
DSNT416I SQLERRD = 9 0 0 -1 0 0 SQL DIAGNOSTIC INFORMATION
DSNT416I SQLERRD = X'00000009' X'00000000' X'00000000' X'FFFFFFFF'
X'00000000' X'00000000' SQL DIAGNOSTIC INFORMATION

Error from syslog...
DSNL511I - DSNLIENO TCP/IP CONVERSATION FAILED 692
TO LOCATION DBTEST
IPADDR=::10.nn.n1.nn PORT=n0001
SOCKET=CONNECT RETURN CODE=1127 REASON CODE=76630291

Any ideas?
Thanks
Kansh

Yes, a few:

- target instance is not running
- target instance's communication parameters are configured incorrectly
- you are specifying an incorrect port number
- a firewall prevents communications on a configured port
- etc.