SAP router strange issue

Hi Experts,

Our saprouter is installed on solman windows host and its running fine with valid maintenance certificate.

We have maintained valid parameters in OSS1. But SAPOSS RFC giving error as below.

Please suggest the cause for the issue and solution. Point will be awarded.

RFC :

Connection Error

Error when opening an RFC connection (LB: Hostname or service of the message ser

ERROR: The connection to the specified message server (/H/194.154.123.87/S/sa

LOCATION: SAP-Server <hostname_SID_00 on host <hostname> (wp 4)

COMPONENT: MS (message handling interface, multithreaded)

COUNTER: 100

MODULE: msxxi.c

LINE: 2783

RETURN CODE: -35

SUBRC: 0

RELEASE: 720

TIME: Tue Feb 03 16:17:06 2015

VERSION: 4

dev_rout log containing the below error.

******* NI-ROUTER LOOP ********

NiICheckPendConnection: connection of hdl 17 to 169.145.197.110:3299 established

NiICheckPendConnection: state of hdl 17 NI_CONNECTED

NiISetSockOpt: set option SOL_SOCKET-SO_KEEPALIVE of hdl 17 to TRUE

NiIWrite: hdl 17 sent data (wrt=1859,pac=1,MESG_IO)

NiIRead: hdl 17 recv would block (errno=EAGAIN)

NiIRead: read for hdl 17 timed out (0ms)

Tue Feb 03 13:24:43 2015

NiSelISelectInt: 0 handles selected (0 buffered)

NiBufCheckPendingConn: connection established for hdl 17

RTPENDLIST::timeoutPend: timeout of client C11/17 (ID 4, STAT ROUTED)

NiBufISendErr: send ni-error rc -5 to hdl 11

NiIWrite: hdl 11 sent data (wrt=262,pac=1,MESG_IO)

NiRCloseConn: closing S11/17

NiICloseHandle: shutdown and close hdl 17/sock 376

<<- SncSessionDone()==SAP_O_K

NiBufIClose: freed out-queue (hdl 17, heap 0)

NiICloseHandle: shutdown and close hdl 11/sock 208

lgtst output giving as error below.

[Thr 6680] *

[Thr 6680] *  ERROR       The connection to the specified message server

[Thr 6680] *              (/H/194.154.123.87/S/sapdp99/H/169.145.197.110/S/sapd

99/H/oss

[Thr 6680] *              001/S/sapmsO01 / x) failed. Please check the trace fi

e

[Thr 6680] *              of the message server. If a network filter has

[Thr 6680] *              been activated (see message server parameters

[Thr 6680] *              ms/acl_file_...) please check the configuration

[Thr 6680] *

[Thr 6680] *  TIME        Tue Feb 03 13:24:43 2015

[Thr 6680] *  RELEASE     720

[Thr 6680] *  COMPONENT   MS (message handling interface, multithreaded)

[Thr 6680] *  VERSION     4

[Thr 6680] *  RC          -35

[Thr 6680] *  MODULE      msxxi.c

[Thr 6680] *  LINE        2783

[Thr 6680] *  COUNTER     1

Thanks & Regards,

Manoj