F5 LB Url https://SERVER/webdynpro/dispatcher... gets page cannot be displayed

Question

Hi All, 
&nbsp;  
&nbsp; we have setup F5 Load Balancer to LB SAP Portal 7.0. 
&nbsp;  
&nbsp; Everything is working fine through LB url, except, when the url schema changes to .../webdynpro/dispatcher/..., for example 
&nbsp;  
&nbsp; a test,   
&nbsp;  
&nbsp; . open the url https://LB-VIP/index.html gets the SAP WAS general screen 
&nbsp;  
&nbsp; . click WEBDYNPRO gets the next page about WebDynPro 
&nbsp; with url schema https://LB-VIP/webdynpro/webdynpro.jsp 
&nbsp;  
&nbsp; . click CONTENT ADMINISTRATION, the url schema changes to: 
&nbsp; https://LB-VIP/webdynpro/distpatcher/.... and we get, Page Cannot Be Displayed 
&nbsp;  
&nbsp; any url which uses the schema https://LB-VIP/webdynpro/dispatcher... gets page cannot be displayed :-( 
&nbsp;  
&nbsp;  
&nbsp; Does anyone know, is this an LB config problem or a SAP problem ? 
&nbsp;  
&nbsp; Thanks, 
&nbsp;  
&nbsp; Perkins.

bls9701_10560 · Answer

Hi perkins, 
&nbsp;  
&nbsp; I don't seem to get the same issue as you.  There are a couple of differences in my setup though.  We do a redirect to the correct port from port 80.  So something like http://LB-VIP.company.com redirects to https://LB-VIP.company.com:5XX01.  One thing to note, and it is difficult to tell from your masking of the actual hostname, is that most single sign on requires the use of a fully qualified domain name, so that is something you may want to check.  When I follow your steps, my URLs are a bit different, (the ones you mentioned don't exist on my system): 
&nbsp;  
&nbsp; Netweaver Start Page: https://LB-VIP.company.com:5XX01/index.html 
&nbsp;  
&nbsp; Webdynpro welcome: http://LB-VIP.company.com:5XX01/webdynpro/welcome/Welcome.jsp 
&nbsp;  
&nbsp; Content Administrator: https://LB-VIP.company.com:5XX01/webdynpro/dispatcher/sap.com/tc~wd~tools/Explorer 
&nbsp;  
&nbsp; I can then run any installed webdynpro application with no issues.   
&nbsp;  
&nbsp; I would ask if it works when not using the f5 (direct to a server) or not.  And does it work without https? 
&nbsp;  
&nbsp; Thanks, 
&nbsp;  
&nbsp; Brian &nbsp;

perkins_71408 · Answer

&nbsp;  
&nbsp; Hi Brian, 
&nbsp;  
&nbsp; thanks for your reply. 
&nbsp;  
&nbsp; Please let me give some more info, 
&nbsp;  
&nbsp; I have been running HTTP Watch trace and this is what I see in the trace... 
&nbsp;  
&nbsp; 1, Open Internet Explorer run the url: https://F5LB-VIP/index.html  I get the SAP WAS page 
&nbsp;  
&nbsp; 2, Click on WebDynPro, the page opens: 
&nbsp; https://F5LB-VIP/webdynpro/webdynpro.jsp 
&nbsp;  
&nbsp; 3, Click on Content Administrator: 
&nbsp;  
&nbsp; and this is the important part, it is at this point that  
&nbsp; the SAP WAS REDIRECTS to a logon screen, and crucially, for some reason, the REDIRECTION to the Logon Screen happens 
&nbsp; in HTTP protocol and NOT the HTTPS like before 
&nbsp;  
&nbsp; it seems the LB is not open for HTTP 
&nbsp;  
&nbsp; but the questions is, where is the protocol change happening when the REDIRECTION happens to the logon screen ? is the LB changing the Protocol, or is the Portal changing the Protocol ? 
&nbsp;  
&nbsp;  
&nbsp; If I logon directly on the hostame and do the same, during the REDIRECTION for the SAP WAS logon screen, there is no PROTOCOL change. 
&nbsp;  
&nbsp;  
&nbsp; Does that mean for some reason the LB is forcing a protocol change ? 
&nbsp;  
&nbsp; Thanks and regards, 
&nbsp;  
&nbsp; John.

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