Solved: SAP router strange issue

Former Member · ‎02-03-2015

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

former_member182657 · ‎02-04-2015

Hi Manoj,

I don't think it's only related with windows firewall,as per me it's completely related with correct IP or correct host name usage which you registered with SAP.

Try to involve network as well as UTM specialists to maintain NAT between the IP's as the issue


SAP analysed the issue and said that SAP system is sending timeout message to saprouter.

only happens if IP or host name configurations have issues.Also could you specify from which end you're getting timeout issue (If SAP support getting timeout on your public IP than i strongly recommend to check with ISP as well UTM team.

Regards,

former_member182657 · ‎02-04-2015

Hi Manoj,

Really nice to work with you on your issue & thanks for the revert,i would request you to kindly update us after getting revert from SAP support end as 'm more anxious to know the recommendations from SAP.

Regards,

Gaurav

Former Member · ‎02-04-2015

Checked the windows firewall with the help of OS admin, he is saying that windows firewall is in ON status but its nt blocking any incoming connections.

We are successfully able to telnet and ping the sapserv9.

I am not able to find the root cause for this..

BR-Manoj

Former Member · ‎02-04-2015

Yes Manuel. thanks for the syntax, we are mentioned the same.

former_member182657 · ‎02-04-2015

Thanks for the update.Let's see !!

Regards,

Former Member · ‎02-04-2015

SAP analysed the issue and said that SAP system is sending timeout message to saprouter..

former_member182657 · ‎02-04-2015

Hi Manoj,

One thing more have you checked entries under host file of your system & changed accordingly.Kindly confirm.

Regards,

Gaurav

former_member182657 · ‎02-04-2015

Hi Manoj,

Thanks for the results,could you confirm for entry sapmsOSS under services file.


sapmsOSS 36<instance no>/tcp

After that retry and test SAPOSS connection.

Regards,

Gaurav

former_member182657 · ‎02-04-2015

Hi Manoj,

If possible could you check your system host entries,should be similar as like


127.0.0.1 localhost.localdomain localhost
<IP of system>   <Hostname>

After making changes to host entries could you try once again to test SAPOSS connection.Addition to it could you share dev_w5 log file for analysis.

Regards,

Former Member · ‎02-04-2015

Hi Gaurav,

I have gone through the SAP Note : 33135 and as of my knowledge I didn't found any issues concern to this note.

Pls check RFC error and OSS1 parameters

BR - Manoj

former_member182657 · ‎02-04-2015

Additionally you could refer SAP KBA 33135 - Guide for OSS1

& reconfirm router data entry from the same.

Regards,

former_member182657 · ‎02-04-2015

Hi Manoj,

If telnet is successful from your end,than could you send what error you're getting on testing SAPOSS


SAPOSS RFC connection is giving error.

Regards,

Gaurav

divyanshu_srivastava3 · ‎02-04-2015

Hi Manoj,

To be precise, saprouter is rejecting connection and this is what the error is all about.

Delete the RFC and recreate with correct process using OSS1.

Make sure the places from packet size to routtab to NATting, everthing is done correctly.

Refer -

2000132 - Configuring RFC connections to the SAPNet R/3 front end (OSS) correctly

766505 - OSS1: Changes to RFC connection SAPOSS

Regards,

Former Member · ‎02-04-2015

Are you able to resolve router IP at end of SAP from your end

Can you please let me know in detail,

I am able to ping the windows host on which the saprouter installed and also able to ping and telnet sapserv9 successfully from my saprouter host

Is there any changes need to be maintained in windows firewall.

BR- Manoj

former_member182657 · ‎02-04-2015

Hi Manoj,


We have checked with SAP and SAP replied that R/3 system is sending a timeout message to our saprouter. Ask us to check with network team to do packet sniffing for more details.

Are you able to resolve router IP at end of SAP from your end & are you using firewall in your network ?

Packet sniffing means monitoring of your network,SAP suggested same because of there may be possibilities of network break or high network traffic on your router connection which causing the issue.

If possible try to take help from your firewall support team to analyze network traffic on the connection.

Also there may be possibilities of DDoS attacks on the specific IP of router.So you need to look after all these things.

Hope this will help you.

Regards,

Former Member · ‎02-04-2015

Hi Experts,

Our saprouter was running fine. But SAPOSS RFC connection is giving error.

We have checked with SAP and SAP replied that R/3 system is sending a timeout message to our saprouter. Ask us to check with network team to do packet sniffing for more details.

We dont have separate network team and we have to resolve ourselves.

Kindly help me to check and resolve the issue.

Meanwhile we will try to upgrade the kernel to its latest patch

BR - Venkat

mamartins · ‎02-03-2015

Hi,

Please post the result of the following command: sapgenpse get_my_name -v.

To avoid privacy/security issues, please dark the private information before post.

Regards,

M

Former Member · ‎02-03-2015

have you registered your SAProuter with SAP as per note 28976 - Remote connection data sheet

also follow the installation guide https://support.sap.com/content/dam/library/SAP%20Support%20Portal/remote-support/saprouter/Remote-S...

SAP router strange issue

Accepted Solutions (1)

Accepted Solutions (1)

Answers (17)

Answers (17)

Re: Hello I want to do SAC planning certification,...

Linking into several variants from diagrams in Sig...

Re: SAP Datasphere DBADMIN and Data provisioning a...

Re: How to do client copy in SAP BW after database...

SAP Analytics Cloud for planning - Resource Issue ...