HTTPS with load balancing

Hi guys,
We have a portal system with instance 08, so we typically connect to the portal using port 50800 for HTTP, and 50801 for HTTPS.
We have just created a second server node for this portal (in the config tool).
When we connect to 50800, does this automatically load balance the user to the better server? From some reading on these forums, it seemed to indicate that load balancing will only occur if I connect using port 8109. (where 09 is the instance number for the SCS of our portal)
When connecting to port 8109, we are redirected to port 50800, as I'd expect.
Question 1 - do we need to use 8109 for load balancing, or can we still use 50800?
Question 2 - If we need to use 8109, which is a HTTP port, how can we achieve load balancing with HTTPS. Is there a different port we need to use to have HTTPS with load balancing?
Question 3 - Is the creation of a second server node the best way to accomodate additional users and load on the portal system, or is there a better way to do things?
Thanks,
Michael.

Better late than never.
The load balancing you describe through the message server has its limitation. It redirects you to one of the dialog server hosts which means that any bookmarks will always point directly to a dialog server which may be down at that moment.
Access directly to a dialog server on port 50800 will sort of load balanc on the java server instances that are on that server but not on other servers.
The general recommendation is to setup an external loadbalancer and SAP Web dispatcher is a good match if the load is not very high. SAP webdispatcher will then bind up the cluster address and act as a proxy towards the dialog servers of the portal. The user will therefore only see one address. This will also work for HTTPS.
Regards
Dagfinn

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If the load balancer is used to handle SSL, do I still need to turn
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[1]
http://support.bea.com
[email protected]
[2]
http://newsgroups.bea.com/cgi-bin/dnewsweb?cmd=xover&group=weblogic.developer.interest.security
George Coller wrote:
>
I've been asked to implement certificate-based authentication (CBA)
on a weblogic cluster serving up web services. I've read through
Chapter 10 (security) and understand the "Identity Assertion" concept.
Environment:
Weblogic 8.1 cluster fronted by a load-balancer that handles SSL and
uses sticky-sessions.
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If the load balancer is used to handle SSL, do I still need to turn
on SSL on the weblogic cluster in order to use CBA? Is there another
way to request the client's certificate?
If the above is yes, what is the minnimal level of SSL? Does it have
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Server:         172.18.0.99
Address:        172.18.0.99#53
Name:   ebslbr.oracle.com
Address: 172.18.0.102
Name:   ebslbr.oracle.com
Address: 172.18.0.101
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Trying 172.18.0.101...
telnet: connect to address 172.18.0.101: Connection refused
Trying 172.18.0.102...
telnet: connect to address 172.18.0.102: Connection refused
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Server:         172.18.0.99
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Address:        172.18.0.99#53
Name:   ebs2.oracle.com
Address: 172.18.0.102
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# Do not remove the following line, or various programs
# that require network functionality will fail.
127.0.0.1       localhost.localdomain   localhost
#:1             localhost6.localdomain6 localhost6
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#172.18.0.102     ebs2.oracle.com        ebs2
#172.18.0.111    db1.oracle.com         db1
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PING ebs2.oracle.com (172.18.0.102) 56(84) bytes of data.
64 bytes from ebslbr (172.18.0.102): icmp_seq=1 ttl=64 time=0.482 ms
64 bytes from ebslbr (172.18.0.102): icmp_seq=2 ttl=64 time=0.546 ms
--- ebs2.oracle.com ping statistics ---
2 packets transmitted, 2 received, 0% packet loss, time 999ms
rtt min/avg/max/mdev = 0.482/0.514/0.546/0.032 ms
[root@ebs1 etc]# ping ebs1
PING ebs1.oracle.com (172.18.0.101) 56(84) bytes of data.
64 bytes from ebs1 (172.18.0.101): icmp_seq=1 ttl=64 time=0.032 ms
64 bytes from ebs1 (172.18.0.101): icmp_seq=2 ttl=64 time=0.044 ms
64 bytes from ebs1 (172.18.0.101): icmp_seq=3 ttl=64 time=0.041 ms
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Trying 127.0.0.1...
telnet: connect to address 127.0.0.1: Connection refused
telnet: Unable to connect to remote host: Connection refused
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[root@ebs1 etc]#
I've further went, made changes in context file...ran autoconfig...but not getting frontend with 'ebslbr' hostname.
Can you please assist what could be the issue ?
Thanks,

Hi Hussein,
I've checked it... but there is a confusion... is telnet work without any port no ?
I mean see below output,
[applmgr@ebs1 ~]$ telnet ebs1 8000
Trying 172.18.0.101...
Connected to ebs1.
Escape character is '^]'.
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[applmgr@ebs1 ~]$ telnet ebs2 8000
Trying 172.18.0.102...
Connected to ebs2.
Escape character is '^]'.
Connection closed by foreign host.
[applmgr@ebs1 ~]$ telnet ebs2
Trying 172.18.0.102...
telnet: connect to address 172.18.0.102: Connection refused
[applmgr@ebs1 ~]$ telnet ebslbr
Trying 172.18.0.101...
telnet: connect to address 172.18.0.101: Connection refused
Trying 172.18.0.102...
telnet: connect to address 172.18.0.102: Connection refused
[applmgr@ebs1 ~]$ telnet ebslbr 8000
Trying 172.18.0.101...
Connected to ebslbr.
Escape character is '^]'.
As per Metalink DOC: 380489.1, my Context file entries for both nodes,
[applmgr@ebs1 ~]$ grep -i s_webentryurlprotocol $CONTEXT_FILE
         <webentryurlprotocol oa_var="s_webentryurlprotocol">http</webentryurlprotocol>
[applmgr@ebs1 ~]$ grep -i s_webentryhost $CONTEXT_FILE
         <webentryhost oa_var="s_webentryhost">ebslbr</webentryhost>
[applmgr@ebs1 ~]$ grep -i s_webentrydomain $CONTEXT_FILE
         <webentrydomain oa_var="s_webentrydomain">oracle.com</webentrydomain>
[applmgr@ebs1 ~]$ grep -i s_webentrydomain $CONTEXT_FILE
         <webentrydomain oa_var="s_webentrydomain">oracle.com</webentrydomain>
[applmgr@ebs1 ~]$ grep -i s_active_webport $CONTEXT_FILE
      <activewebport oa_var="s_active_webport" oa_type="DUP_PORT" base="8000" step="1" range="-1" label="Active Web Port">8000</activewebport>
[applmgr@ebs1 ~]$ grep -i s_login_page $CONTEXT_FILE
         <login_page oa_var="s_login_page">http://ebslbr.oracle.com/OA_HTML/AppsLogin</login_page>
[applmgr@ebs1 ~]$ grep -i s_external_url $CONTEXT_FILE
         <externURL oa_var="s_external_url">http://ebslbr.oracle.com</externURL>
After running autoconfig, I still get frontpage for http://ebs1.oracle.com:8000/OA_HTML/AppsLogin & http://ebs2.oracle.com:8000/OA_HTML/AppsLogin which eventually redirects to http://ebslbr.oracle.com:8000/OA_HTML/RF.jsp?function_id=28716&resp_id=-1&resp_appl_id=-1&security_group_id=0&lang_code=… but which is wrong (there is no load balancing at all)...as my local desktop system32\drivers\etc\hosts file have following entries,
172.18.0.101    ebs1.oracle.com
ebslbr.oracle.com    ebslbr
172.18.0.102    ebs2.oracle.com
ebslbr.oracle.com    ebslbr
so,
ebs1.oracle.com:8000 -> ebslbr.oracle.com:8000 (It will always go to 1st node only)
This can be also proved by,
[applmgr@ebs1 ~]$ telnet ebslbr.oracle.com 8000 (telnet to ebslbr always going to 1st node on ebs1)
Trying 172.18.0.101...
Connected to ebslbr.oracle.com.
Escape character is '^]'.
[applmgr@ebs2 scripts]$ telnet ebslbr.oracle.com 8000 (telnet to ebslbr always going to 2nd node on ebs2)
Trying 172.18.0.102...
Connected to ebslbr.oracle.com.
Escape character is '^]'.
This should be round robin fashion...
Can you please help me, what is going wrong here ?
your help would be much appreciated ...
Regards,
Manish

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Hi,
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