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Connect to SAP gateway failed, ERROR service '?' uknown

Former Member
0 Kudos

Hi,

At some point last week, our connection to SAP started to fail. It seems that SAP can't access our saprouter.

The error message is:

Our infrastructure department says there has been no changes on firewall rules, gateways etc.

Have anyone experienced this before?

Thanks!

M.

Accepted Solutions (1)

Accepted Solutions (1)

divyanshu_srivastava3
Active Contributor
0 Kudos

Hi Moye,

Where are you getting his above shown error ?

Please refer below note and see if this works.

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

500235 - Network Diagnosis with NIPING


Also, check host and services file.


Regards,

Divyanshu

Former Member
0 Kudos

Hi,

Thanks. Our RFC connection config is properly set up (it used to work before). We have also checked with NIPING, and there seems to be no errors....

We also checked the services file, nothing has been changed here and the gateway number is correctly defined...

M.

divyanshu_srivastava3
Active Contributor
0 Kudos

At what point are you getting this error ?

**FYI..Do you have a valid license for saprouter ? It does expire and we have to renew

Regards,

Divyanshu

Former Member
0 Kudos

Moye,

Try to update the router string in Service market Place

Steps:

1Login SMP

2.Click on connect to SAP

3.Select Maitain connecton

3.And select any of the system from your landscape and there you see the router string as follows

/H/<Your system IP address where the SAP router is installed on your  llandscape>/S/3299

4.Then try to click on Connect button..

It should work!!

Thanks

Naresh Gollapelly

Former Member
0 Kudos

Hi,

We have a valid license.

This message appears when we try to open service connection to SAP from support portal (after starting the Service Connector).

M.

Former Member
0 Kudos

Moye,

Have you tried following my above suggested solution??

What is the router status it shows??

Is it connected of not connected status??

Have you updated the Router string with your sap system IP address where your SAP router is installed??

/H/172.19.27.46/S/3299

Former Member
0 Kudos

Hi,

It has status "Cancelled".

Yes, we updated the Router string with our IP address to SAP router.

M.

divyanshu_srivastava3
Active Contributor
0 Kudos

Have you maintained router details in market place ?

Answers (5)

Answers (5)

Former Member
0 Kudos

Hello Moye,

I am not sure if your problem is resolved.

Test 1 :

Have you checked the ABAP RFC connection in SM59 for destination SAPOSS ?

There should be 2 entries in your saprouter for incoming and outcoming connections. If both entries are set, SM59 ABAP RFC should work.

This could be 1st test that packets are getting exchanged with SAP's router (sapservxx).

Test 2 :

Perform a ping test from your router server to SAProuter 194.39.131.34 and 'telnet 194.39.131.34 3299'.


Regards,

Ankit

Former Member
0 Kudos

Hi thanks, it is resoved. Turned out that our infrastructure department did some changes in firewall rules

M.

Former Member
0 Kudos

Hi,

Thanks all for helpful answers! After all- our infrastructure department did some changes.

We got reply from SAP on our oss, and it turns out that they could remotely access the system, but the ping packets were blocked.

Here's the reply from SAP:

Explanation

sapserv2 is sending every 2 minutes a ping (ICMP) packet to your

SAProuter. If we are not getting a reply

from your side, because your Firewall is blocking ping packets, the

SAProuter status message

<host did not respond x times>

is displayed in the SAP Service Marketplace.

As long as we can reach your SAProuter process on port 3299 the

access (remote connection) to your systems is normally possible.

Solution

You can ask your firewall administrator whether he can open ICMP for

the connection from sapserv2 (194.39.131.34) to your SAProuter.

Please verify, if your firewall has been released to allow the

following access rules (see note 48243).

194.248.14.103 -> 194.39.131.34:icmp (echo-reply, type 0)

194.39.131.34 -> 194.248.14.103:icmp (echo-request, type 😎

M.

madasamy_arunachalam
Active Participant
0 Kudos

Hi Moye

Yes, your infrastructure team is correct, no changes at your end.

There were some changes happened at SAP AG's end for OSS1 server/connection details. SAP  documented this changes under OSS Note 2000132 - Configuring RFC connections to the SAPNet R/3 front end (OSS) correctly

i.e. your configured OSS1 server details are incorrect,  (but sap says still it should work but not necessary always...)


oss001.wdf.sap-ag.de

It should be oss001.wdf.sap.corp, refer this note and follow the instruction & should be resolved.

Also note there is "No changes are required" at SAPROUTER level...

Once done, update and mark this thread about the status.

regards

Swami

former_member186228
Active Participant
0 Kudos

Dear moyo,

You can find error details in sap router log file dev_rout,

Regards,

Jithin M

Former Member
0 Kudos

Hi,

Thanks, but there is nothing in particular in the log file...

M.

former_member186228
Active Participant
0 Kudos

Hi Moyo,

Please check your saprouter is up and running.

Regards,

Jithin M

Former Member
0 Kudos

Hi,

It is up and running.

M.