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Problems connecting to an SAP server on a different network

EXPERT RESPONSE FROM: Axel Angeli

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QUESTION POSED ON: 27 February 2007
We are trying to connect to a SAP server that is on a different network. I am not able to ping the server from the system that I am connecting from. I am able to connect to the SAP Server from the SAP GUI using the router string method. But when I try to use my application, which doesn't use the SAP router string, I get this error.
Unable to connect to SAP System RFC_ERROR_COMMUNICATION; Connect to SAP gateway failed Connect_PM GWHOST-hola1q61, GWSERV=sapggw12 , ASHOST=hola1q61 , SYSNR=12 LOCATION CPIC (TCP/IP) on local host ERROR partner not reached

EXPERT RESPONSE
If you normally connect through the router, you have to specify the router string in your application as well. The reason is that your SAP accepts no connection from outside but from the router only; that acts as a firewall. There is no difference in the logon procedure using SAPLogon or an RFC; you can use exactly the credentials that are used in SAPlogon. You can test logon as well using the SAP command line launcher "sapshcut.exe" from the SAPGUI directory (example: C:ProgrammeSAPFrontEndSAPgui>sapshcut /?)

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