Multiple Web Disaptcher in Same Hostname

[Former Member]

Dear All,

Recently we have installed the web dispathcer in DMZ and established a connection to the ECC system (Connection Type - SSL ternmination).i.e - https - http. Everything went fine and so we tried to make use of the same machine for another web disaptcher instance, so installation and configuration done for http type with different port for new bw system. For http port it worked perfectly but if try for https (443) port its taking to the old system (ECC) and not the new system. Might be a cookie problem.? Not sure.

So we decided to go with the multiple virtual ip with the same hostname.

Vittual ip1 with hostname : HTTP port30 and https port 443 with hostname (webdisp) pointing to the ECC system.(I used this ip and differentiated in host entries like 123.21.12.33 webdisp.FQDN). As a result http and https worked fine

Vittual ip2 with hostname : HTTP port60 and https port 443 with same hostname (webdisp) pointing to the BW system.(I also used this ip and differentiated in host entries like 123.21.12.34 newwebdisp.FQDN). As a result http worked and https taking to the old ECC system.

But if i use https://webdisp:443/ and https://newwebdisp:443/ both poingting to the ECC system only.

This mean do i need to install for new web disaptcher in new hardware(different hostname) and different IP. To avoid the cookie problem rather than trying in virtual IP?.

kindly give your thoughts.

Vijay

[Former Member · Accepted solution]

Hi,

You need to install 2 SAP Web Dispachers on the same host.

Each of these 2 web dispatchers should listen to a different HTTPS port (443 and 444 for example).

If you need to use HTTPS on port 443 for both backends then I don't think you can use the web dispatcher.

For a similar need, I used an Apache Reverse proxy in front of 2 SAP web dispachers.

Apache is able to rewrite URLs (not the SAP web dispatcher).

The SAP web disptcher is able to manage http load balancing for SAP backend systems (not Apache).

Regards,

Olivier

[Former Member · Accepted solution]

Thanks Oliver.

I have tried the same and as you said i need to use the different ports. I have tried the same port just for checking and its taking me to the first web disaptcher (even with different ip) only.

I will go for another hardware to fix my issue.

Thanks alot for your answer.

Vijay Kumar