Load Balancing ITS on ERP 2005 displayed through EP 7.0

We are having trouble setting up our Cisco ACE load balancer for ITS on ERP 2005 displayed through EP 7.0. The help documentation is a little confusing as to whether ITS does its load balancing by itself, or with ERP 2005, you need an external load balancer. Does ITS on ERP 2005 provide load balancing?
If it does not, we need an external load balancer and are trying to figure out how to configure the ACE tool for that, particularly around session persistence. Since we are also doing reverse proxy, we would need to use session cookies to key the sticky round-robin load balancing off of. The documentation is a little vague on what the cookie variable is for ITS sessions. Can anyone point me to detailed instructions on how to do this?

Hi,
despite the SAP Help, you can also check out the following blogs. They explain step-by-step configuration to get a SAP Web Dispatcher running:
How to...Configure SAP Webdispatcher as a reverse proxy
How to...Configure SAP Webdispatcher as a reverse proxy
Setup SAP Web Dispatcher with URL Filter
Setup SAP Web Dispatcher with URL Filter on SuSE Linux 9.0
How to setup webdispatcher to load balance portal in a clustered environment
How to setup webdispatcher to load balance portal in a clustered environment
br,
Tobias

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Hi,
          I have been trying to understand webloigc clustering and load balancing capabilities. I have been through the edocs but it does not explain how things work, instead they only emphasis on how to configure.
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note that we have had trouble with keep alives ON and load balancing. we had to turn keep alives off to get load balancing working.
2. right, the cluster allows failover by replication. apache plugin will perform the failover.
3. the plugin will keep a dynamic server list so if a server goes down, it will update the cluster list and not route to it. it will also retry requests on another server on an error or timeout connecting. you can tweak timeout settings like WLSocketTimeoutSecs and ConnectTimeoutSecs. and keep idempotent ON which allows failover, unless you aplpication can't handle this.

How to load balance everything

Edit:
More up to date list is available on the wiki:
http://wiki.oracle.com/page/WCI+Load+Balancing
Its hard to find information related to deployment anymore, as there is no deployment guide for 10gR3 and a lot of information is scattered around in outdated blog posts. I'd like to keep a list of how to design every component for HA. I don't doubt that there are a lot of errors and things that need filled in so please reply with your additions and corrections.
h3. Types of load balancing referenced:
h4. external
refers to a hardware or software based load balancing handled outside Webcenter software
h4. MPPE
the 'massively parallel portlet engine' is the portal's ability to internally load balance web services that are configured with round robin DNS
h4. cold failover
I might have the terminology wrong, but I'm referring to when you have another instance of the product installed but disabled. The instance can be turned on in the event of an ourage of the primary component, but it is not automatically available.
h1. Portal
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h3. References:
http://edocs.bea.com/alui/deployment/docs604/networking/c_loadbalancing.html
h1. API
h1. Publisher
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h2. Publisher admin
Cannot be load balanced, use cold failover
h2. Publisher redirector
MPPE (or external?)
h2. Published content
external
h3. References:
http://fsanglier.blogspot.com/2008/02/alui-publisher-increase-performance.html
h1. Collaboration
External / MPPE (with collab internal clustering)
(Although i'm currently having issues wtih this and someone reported that you can do without the collab internal clustering)
h3. Collab's API
When using the IDK to connect to collab, custom applications bypass the MPPE and communicate directly to the collab host, losing the benefit of the MPPE. In order to load balance in this situation, the collab host must use external load balancing. (is this true?)
h3. "Search" service (the collab one) (only applies to 4.5 or newer)
Install on same servers as collab?
http://download.oracle.com/docs/cd/E13158_01/alui/collaboration/docs103/install/install.htm#i1138897
h3. References:
http://edocs.bea.com/alui/deployment/docs604/networking/c_loadbalancing.html
recent collab outage related questions
h1. Document Repository
External
h1. (AD/LDAP) Identity Web Services
MPPE to the Web Services
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h1. Analytics
Analytics UI
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Analytics collector can be load balanced (as of 2.5)
http://download-llnw.oracle.com/docs/cd/E13158_01/alui/analytics/docs103/installALI/quickstart.html#wp1063387
h1. Automation
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h1. Content Upload
(mppe / external)?
h1. ALUI Directory Service
h1. Remote Portlet Service
? (i'm gussing MPPE)
h1. Notification
? no idea
h1. What else am i missing?
Edited by: Joel Collins on Apr 27, 2009 6:52 AM

Here are few bits of info:
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For the collector, I think there are two important things to remember. Use broadcast mode. I've never actually seen it in unicast mode, but broadcast definitely works. Also, remember that this is all managed by Portal and Analytics - you don't use your own load balancer between Portal instances and the Analytics Collector instances.
Finally, ALUI Directory is not certified to be load balanced yet. On a separate note, ALUI Directory has a socket leak on Windows due to a bug in the version of Jrockit that ships with it. Upgrading the embedded application server for the ALUI/WCI installation to jrockit-R27.5.0-jdk1.5.0_14 will resolve it.

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I think you'd need to make the two servers a cluster and create a virtual server that includes both pieces of hardware.
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There's a huge writeup here: http://www.cisco.com/c/en/us/td/docs/security/asa/asa91/configuration/vpn/asa_91_vpn_config/vpn_params.html
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10.99.1.60
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I think you'd need to make the two servers a cluster and create a virtual server that includes both pieces of hardware.
From Cisco in regards to asa 9.1: Load balancing works with IPsec clients and SSL VPN client and clientless sessions. All other VPN connection types (L2TP, PPTP, L2TP/IPsec), including LAN-to-LAN, can connect to an ASA on which load balancing is enabled, but they cannot participate in load balancing.
There's a huge writeup here: http://www.cisco.com/c/en/us/td/docs/security/asa/asa91/configuration/vpn/asa_91_vpn_config/vpn_params.html
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Thank's

Integrating and using Web Cache with Forms for Load Balancing [ID 229900.1]
Please go through above Oracle Support Notes. It will help you to acheive the integration between Oracle Webcache with Oracle Forms

Load balancing for SAP R3 through ITS for EP .

Dear All
We are using ITS bease SAP R3 iviews in EP ..The landscape is as follows
EP --> ITS --> SAP R3 .
We need to configure a load balancing from EP to R3. Currently the ITS is set to hit one Application server on SAP r3 . How do i configure load balancing in EP for R3 .
Even if we use the Load Balancing Iview, it does not prompt to enter SAP R3 Application servers in the EP Load balancing iview properties.
all it asks is the ITS server and SAP server for connectors.
Regards
Jayesh

Please do the following steps to accomplish load balancing. It includes both ITS definition and system definition.
ITS Definition:
System definition alone will not help. Because you are using ITS to access SAP R/3. ITS uses global.srvc file to access SAP R/3 system.
When you install ITS you have option to choose connection with SAP R/3. You have two options here.
1) Message server with load balancing
2) Application server.
If you choose option 1, you will have load balancing on SAP R/3 using ITS.

Forcing traffic through load balancer rather than zone to zone

I have several T5140s with 2 LDOMs. Within each LDOM I have multiple zones which contain 2 environments. Each environment comprises the following, an apache instance behind a BigIP load balancer, a JBoss instance, and several misc. The jboss zone has three IP address assigned for multiple applications. Each server is configured identically as far as zone and LDOM layout. We use mod_cluster to cluster our apache and Jboss environment. What I'm trying to accomplish is forcing the apache zone's traffic through the BigIP rather than zone to zone.
Referring to the information below, server2ldom1jboss is one jboss node which needs to connect to both server2ldom1japache and server1ldom1apache. server2ldom1jboss connects to server2ldom1apache via its DNS name which is a NAT address. So webserver2 resolves to 10.10.2.5 which NATs to 10.10.1.5 behind the BigIP. webserver2 responds directly to the jboss zone rather than through the BigIP. Not good. server1ldom1apache works correctly as it's not a local zone.
Referring to this document, https://blogs.oracle.com/solarium/resource/solaris-container-guide-en-v3.1.pdf
section 5.2.7.8
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I've created the following routes
route add 10.10.2.5 10.10.1.5
route add 10.10.0.34 10.10.1.5 -interface -reject
route add 10.10.0.35 10.10.1.5 -interface -reject
route add 10.10.0.87 10.10.1.5 -interface -reject
route add 10.10.1.5 10.10.0.87 -interface -reject
route add 10.10.1.5 10.10.0.34 -interface -reject
route add 10.10.1.5 10.10.0.35 -interface -reject
This does prevent the zone to zone traffic, but it also preventing any response. I've tried other options as well, but have not been successful yet. What concerns me is this "These interfaces must not be used elsewhere in the global zone." The 5140 has 4 ethernet ports, which are configured into two port channels. vnet0 and vnet1. The apache instances use vnet1. The remaining zones use vnet0, including the global zone (server2ldom1 10.10.0.21). I think this may be the issue, but do not see an easy resolution without breaking my port channels and losing redundancy and fail-over.
If there is anything I'm missing or a better/different way to do this, I would greatly appreciate any input on this matter.
Thank you.
webserver2 10.10.2.5 NATs to 10.10.1.5
jboss apps 10.10.0.34, 10.10.0.35, 10.10.0.87
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10.10.1.0/24 is the network behind the BigIP
10.10.2.0/24 is the webserver network (in front of the BigIP)
[1658]root@server2:~# ldm list-bindings
NAME STATE FLAGS CONS VCPU MEMORY UTIL UPTIME
primary active -n-cv- SP 4 2G 1.1% 138d 5h
MAC
00:14:4f:ec:20:ff
HOSTID
0x84ec20b8
VCPU
VID PID UTIL STRAND
0 0 2.0% 100%
1 1 1.4% 100%
2 2 0.7% 100%
3 3 2.1% 100%
MAU
ID CPUSET
0 (0, 1, 2, 3, 4, 5, 6, 7)
MEMORY
RA PA SIZE
0x8000000 0x8000000 2G
VARIABLES
boot-device=/pci@0/pci@0/pci@2/scsi@0/disk@0,0:a disk net
keyboard-layout=US-English
nvramrc=devalias rootdisk /pci@0/pci@0/pci@2/scsi@0/disk@0,0:a devalias rootmirror /pci@0/pci@0/pci@2/scsi@0/disk@1,0:a
security-mode=none
security-password=
use-nvramrc?=true
IO
DEVICE PSEUDONYM OPTIONS
pci@0 pci
niu@80 niu
VCC
NAME PORT-RANGE
primary-vcc0 5000-5010
CLIENT PORT
group1@primary-vcc0 5000
group1@primary-vcc0 5000
VSW
NAME MAC NET-DEV DEVICE DEFAULT-VLAN-ID PVID VID MODE
primary-vsw0 00:14:4f:f9:ff:ff aggr1 switch@0 1 1
PEER MAC PVID VID
vnet0@ldom2 00:14:4f:fb:7b:ff 1
vnet0@ldom1 00:14:4f:fb:1a:ff 1
NAME MAC NET-DEV DEVICE DEFAULT-VLAN-ID PVID VID MODE
primary-vsw1 00:14:4f:fb:8e:ff aggr2 switch@1 1 1
PEER MAC PVID VID
vnet1@ldom1 00:14:4f:f8:17:ff 1
vnet1@ldom2 00:14:4f:f8:c2:ff 1
VDS
NAME VOLUME OPTIONS MPGROUP DEVICE
primary-vds0 ldom2_swap /ldoms/swap/server2ldom2
ldom2_root /dev/dsk/c4t600601601CE1210018F9E37BD2AADD11d0s2
ldom1_swap /ldoms/swap/server2ldom1
ldom1_root /dev/dsk/c4t600601601CE121007E02166CD2AADD11d0s2
CLIENT VOLUME
ldom2_swap@ldom2 ldom2_swap
ldom2_root@ldom2 ldom2_root
ldom1_swap@ldom1 ldom1_swap
ldom1_root@ldom1 ldom1_root
VCONS
NAME SERVICE PORT
SP
NAME STATE FLAGS CONS VCPU MEMORY UTIL UPTIME
ldom1 active -n---- 5000 30 15G 3.7% 192d 6h
MAC
00:14:4f:f8:a5:ff
HOSTID
0x84f8a5f5
VCPU
VID PID UTIL STRAND
0 4 0.4% 100%
1 5 0.3% 100%
2 6 0.1% 100%
3 7 4.4% 100%
4 8 0.2% 100%
5 9 0.2% 100%
6 10 14% 100%
7 11 0.1% 100%
8 12 8.1% 100%
9 13 0.1% 100%
10 14 0.1% 100%
11 15 0.1% 100%
12 16 0.3% 100%
13 17 0.1% 100%
14 18 0.1% 100%
15 19 0.1% 100%
16 20 0.3% 100%
17 21 0.6% 100%
18 22 0.3% 100%
19 23 0.1% 100%
20 54 1.0% 100%
21 55 0.5% 100%
22 56 1.2% 100%
23 57 0.2% 100%
24 58 4.5% 100%
25 59 0.9% 100%
26 60 0.0% 100%
27 61 0.1% 100%
28 62 0.1% 100%
29 63 0.3% 100%
MAU
ID CPUSET
1 (8, 9, 10, 11, 12, 13, 14, 15)
2 (16, 17, 18, 19, 20, 21, 22, 23)
6 (48, 49, 50, 51, 52, 53, 54, 55)
7 (56, 57, 58, 59, 60, 61, 62, 63)
MEMORY
RA PA SIZE
0x8000000 0x88000000 10G
0x401800000 0x6b1800000 5G
VARIABLES
auto-boot?=true
boot-device=ldom1_root:b
NETWORK
NAME SERVICE DEVICE MAC MODE PVID VID
vnet0 primary-vsw0@primary network@0 00:14:4f:fb:1a:ff 1
PEER MAC MODE PVID VID
primary-vsw0@primary 00:14:4f:f9:ff:ff 1
vnet0@ldom2 00:14:4f:fb:7b:ff 1
NAME SERVICE DEVICE MAC MODE PVID VID
vnet1 primary-vsw1@primary network@1 00:14:4f:f8:17:ff 1
PEER MAC MODE PVID VID
primary-vsw1@primary 00:14:4f:fb:8e:ff 1
vnet1@ldom2 00:14:4f:f8:c2:ff 1
DISK
NAME VOLUME TOUT DEVICE SERVER MPGROUP
ldom1_swap ldom1_swap@primary-vds0 disk@0 primary
ldom1_root ldom1_root@primary-vds0 disk@1 primary
VCONS
NAME SERVICE PORT
group1 primary-vcc0@primary 5000
NAME STATE FLAGS CONS VCPU MEMORY UTIL UPTIME
ldom2 active -n---- 5000 30 15000M 0.8% 192d 6h
MAC
00:14:4f:fa:e8:ff
HOSTID
0x84fae839
VCPU
VID PID UTIL STRAND
0 24 1.0% 100%
1 25 1.0% 100%
2 26 0.0% 100%
3 27 0.0% 100%
4 28 0.1% 100%
5 29 0.3% 100%
6 30 0.0% 100%
7 31 0.0% 100%
8 32 0.0% 100%
9 33 0.1% 100%
10 34 1.3% 100%
11 35 0.0% 100%
12 36 0.1% 100%
13 37 1.0% 100%
14 38 1.9% 100%
15 39 0.0% 100%
16 40 0.0% 100%
17 41 0.0% 100%
18 42 0.1% 100%
19 43 0.5% 100%
20 44 0.2% 100%
21 45 0.0% 100%
22 46 0.2% 100%
23 47 0.4% 100%
24 48 0.2% 100%
25 49 0.0% 100%
26 50 0.0% 100%
27 51 0.0% 100%
28 52 0.0% 100%
29 53 0.0% 100%
MAU
ID CPUSET
3 (24, 25, 26, 27, 28, 29, 30, 31)
4 (32, 33, 34, 35, 36, 37, 38, 39)
5 (40, 41, 42, 43, 44, 45, 46, 47)
MEMORY
RA PA SIZE
0x8000000 0x308000000 15000M
VARIABLES
auto-boot?=true
boot-device=/virtual-devices@100/channel-devices@200/disk@1:b ldom2_root
keyboard-layout=US-English
NETWORK
NAME SERVICE DEVICE MAC MODE PVID VID
vnet0 primary-vsw0@primary network@0 00:14:4f:fb:7b:ff 1
PEER MAC MODE PVID VID
primary-vsw0@primary 00:14:4f:f9:ff:ff 1
vnet0@ldom1 00:14:4f:fb:1a:ff 1
NAME SERVICE DEVICE MAC MODE PVID VID
vnet1 primary-vsw1@primary network@1 00:14:4f:f8:c2:ff 1
PEER MAC MODE PVID VID
primary-vsw1@primary 00:14:4f:fb:8e:ff 1
vnet1@ldom1 00:14:4f:f8:17:ff 1
DISK
NAME VOLUME TOUT DEVICE SERVER MPGROUP
ldom2_swap ldom2_swap@primary-vds0 disk@0 primary
ldom2_root ldom2_root@primary-vds0 disk@1 primary
VCONS
NAME SERVICE PORT
group1 primary-vcc0@primary 5000
[1657]root@server2ldom1:~# ifconfig -a
lo0: flags=2001000849<UP,LOOPBACK,RUNNING,MULTICAST,IPv4,VIRTUAL> mtu 8232 index 1
inet 127.0.0.1 netmask ff000000
lo0:1: flags=2001000849<UP,LOOPBACK,RUNNING,MULTICAST,IPv4,VIRTUAL> mtu 8232 index 1
zone server2ldom1z3
inet 127.0.0.1 netmask ff000000
lo0:2: flags=2001000849<UP,LOOPBACK,RUNNING,MULTICAST,IPv4,VIRTUAL> mtu 8232 index 1
zone server2ldom1z2
inet 127.0.0.1 netmask ff000000
lo0:3: flags=2001000849<UP,LOOPBACK,RUNNING,MULTICAST,IPv4,VIRTUAL> mtu 8232 index 1
zone server2ldom1z6
inet 127.0.0.1 netmask ff000000
lo0:4: flags=2001000849<UP,LOOPBACK,RUNNING,MULTICAST,IPv4,VIRTUAL> mtu 8232 index 1
zone server2ldom1jboss
inet 127.0.0.1 netmask ff000000
lo0:5: flags=2001000849<UP,LOOPBACK,RUNNING,MULTICAST,IPv4,VIRTUAL> mtu 8232 index 1
zone server2ldom1apache
inet 127.0.0.1 netmask ff000000
lo0:6: flags=2001000849<UP,LOOPBACK,RUNNING,MULTICAST,IPv4,VIRTUAL> mtu 8232 index 1
zone server2ldom1z1
inet 127.0.0.1 netmask ff000000
vnet0: flags=1000843<UP,BROADCAST,RUNNING,MULTICAST,IPv4> mtu 1500 index 2
inet 10.10.0.21 netmask ffffff00 broadcast 10.10.0.255
ether 0:14:4f:fb:1a:ff
vnet0:1: flags=1000843<UP,BROADCAST,RUNNING,MULTICAST,IPv4> mtu 1500 index 2
zone server2ldom1z2
inet 10.10.0.33 netmask ffffff00 broadcast 10.10.0.255
vnet0:2: flags=1000843<UP,BROADCAST,RUNNING,MULTICAST,IPv4> mtu 1500 index 2
zone server2ldom1z6
inet 10.10.0.36 netmask ffffff00 broadcast 10.10.0.255
vnet0:3: flags=1000843<UP,BROADCAST,RUNNING,MULTICAST,IPv4> mtu 1500 index 2
zone server2ldom1jboss
inet 10.10.0.34 netmask ffffff00 broadcast 10.10.0.255
vnet0:4: flags=1000843<UP,BROADCAST,RUNNING,MULTICAST,IPv4> mtu 1500 index 2
zone server2ldom1jboss
inet 10.10.0.35 netmask ffffff00 broadcast 10.10.0.255
vnet0:5: flags=1000843<UP,BROADCAST,RUNNING,MULTICAST,IPv4> mtu 1500 index 2
zone server2ldom1z1
inet 10.10.0.32 netmask ffffff00 broadcast 10.10.0.255
vnet0:6: flags=1000843<UP,BROADCAST,RUNNING,MULTICAST,IPv4> mtu 1500 index 2
zone server2ldom1z1
inet 10.10.0.74 netmask ffffff00 broadcast 10.10.0.255
vnet0:7: flags=1000843<UP,BROADCAST,RUNNING,MULTICAST,IPv4> mtu 1500 index 2
zone server2ldom1jboss
inet 10.10.0.87 netmask ffffff00 broadcast 10.10.0.255
vnet1: flags=1000842<BROADCAST,RUNNING,MULTICAST,IPv4> mtu 1500 index 3
inet 0.0.0.0 netmask 0
ether 0:14:4f:f8:17:ff
vnet1:1: flags=1000843<UP,BROADCAST,RUNNING,MULTICAST,IPv4> mtu 1500 index 3
zone server2ldom1z3
inet 10.10.1.101 netmask fffffc00 broadcast 10.10.47.255
vnet1:2: flags=1000843<UP,BROADCAST,RUNNING,MULTICAST,IPv4> mtu 1500 index 3
zone server2ldom1apache
inet 10.10.1.5 netmask fffffc00 broadcast 10.10.47.255
[1701]root@server2ldom1:~# zonecfg -z server2ldom1jboss info
zonename: server2ldom1jboss
zonepath: /zones/server2ldom1jboss
brand: native
autoboot: true
bootargs:
pool:
limitpriv:
scheduling-class:
ip-type: shared
inherit-pkg-dir:
dir: /lib
inherit-pkg-dir:
dir: /platform
inherit-pkg-dir:
dir: /sbin
inherit-pkg-dir:
dir: /usr
inherit-pkg-dir:
dir: /opt/sfw
inherit-pkg-dir:
dir: /opt/
net:
address: 10.10.0.34
physical: vnet0
defrouter: 10.10.0.1
net:
address: 10.10.0.35
physical: vnet0
defrouter: 10.10.0.1
net:
address: 10.10.0.87
physical: vnet0
defrouter: 10.10.0.1
attr:
name: comment
type: string
value: server2ldom1jboss
[1702]root@server2ldom1:~# zonecfg -z server2ldom1apache info
zonename: server2ldom1apache
zonepath: /zones/server2ldom1apache
brand: native
autoboot: true
bootargs:
pool:
limitpriv:
scheduling-class:
ip-type: shared
inherit-pkg-dir:
dir: /lib
inherit-pkg-dir:
dir: /platform
inherit-pkg-dir:
dir: /sbin
inherit-pkg-dir:
dir: /usr
inherit-pkg-dir:
dir: /opt/sfw
inherit-pkg-dir:
dir: /opt/
net:
address: 10.10.1.5/22
physical: vnet1
defrouter not specified
attr:
name: comment
type: string
value: server2ldom1apache
Edited by: coreyva on Feb 18, 2012 11:36 AM

After further research, I think the best course of action will be to create a VLAN for the zone behind the BigIP and then create the corresponding interface in the vlan and zone. Using this links as my references in case anyone is interested. I'll post what I come up with.
https://blogs.oracle.com/stw/entry/using_ip_instances_with_vlans
https://blogs.oracle.com/stw/entry/solaris_zones_and_networking_common
http://docs.oracle.com/cd/E19253-01/816-4554/816-4554.pdf # AdministeringVirtualLocalAreaNetworks
http://docs.oracle.com/cd/E19053-01/ldoms.mgr11/820-4913-10/820-4913-10.pdf # Assign VLANs to a Virtual Switch and Virtual
Network Device

Load balancing 3 2013 FE servers through a HW load balancer

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services URL but the problem with that is I don't have a name in my certificate available. Right now, the pool name and the web services name are the same. Lyncpool.domain.com.
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Or, I can just pass everything through the HW LB. Both SIP and web services traffic. Not sure what ports I would need to allow but shouldn't be too hard to figure out. Any advice would be appreciated.

Internal web services are: Meet - you need this for meetings Dialin - you need this for pin mgmt for users, changing their meet URL and information about dtmf. I wouldn't skip it if I was you Lyncdiscoverinternal - used for location of the services for
mobile and slates Internal web service URL - used for access to address book and certificate services, download of meet content and more. This IS a must Admin, can be skipped, yes All of the above should be in a single certificate + the three servers in your
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publishing the topology, you should: -make sure replication status is true - Run bootstrapper on all servers - create a new cert (make sure all your host names are present), make sure it is exportable - install the new cert on the server - Restart IIS - Export
this certificate with private key - import this certificate on the other two servers (restart iis after import and assignment) - Import this certificate on the HLB and use it on the http VIP Hope this helps :)
Lasse Wedø,
Blog:Tech@work, Twitter: @lawedo
Please take a second to hit the green arrow on the left if the post was helpful, or mark it as an answer if it resolved your issue.

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Hi
How do I setup load balancing on Integrated ITS.
Windows 2003 server.
Thanks

Hello,
You'll need a third party load balancer or you can use the SAP Web Dispatcher. You can find more information on the SAP Web Dispatcher at: http://help.sap.com/saphelp_nw04/helpdata/en/42/5cfd3b0e59774ee10000000a114084/frameset.htm
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I'd like to get the server name where is my application installed. There are some servers and clients access there throuth the load balancer. When I try to get it with request.getServerName(), I get the virtual address of the load balancer.
Any suggestions?
Thanks.

Dear Sikindar;
THanks for your cooperation, but I believe that these Tcodes will eb helpful if I know the table name, actually we don't know its name and that's what I'm asking about, how can I get the table name for the ABAPer?
Appreciating your cooperation.
Best Regards;
Lobna

Any concern on persistent search through a load balancer?

We have access manager 7 installed which make use of persistent search. My understanding is that persistent search required to maintain a connection so that the server can refresh/update the client whenever entry in the result set changed. If we configure the system to connect to ldap through load balancer, will that cause any problem? What will happen if the load balancer refresh connection after a period of time? Or , if the original ldap server failed and the load balancer try load balance the client to another ldap server, will the persistent search still works?
Also, if the ldap server that the persistent search initially established connection with crashed, will the client get error message and in that case, is it the client's responsibility to re-run/retry the persistent search with other failover ldap server?
Thanks,

Your best bet, even when using a hardware load balancer, is to front your DS instances with a pair of load-balanced Directory Proxy Servers. This way, you have physical redundancy at the load balancer level, and intelligent LDAP-aware load balancing at the proxy server level. DPS 6 is very nice in that you can split binds, searches, and updates amongst several backend DS instances, and the connection state is maintained by the proxy, not the DS instance (i.e. if an instance fails, you really shouldn't be forced to rebind, the proxy fails-over to another DS for searching).
We have our Directory Servers on a pair of Solaris 10 systems, each with a zone for a replicated Master DS, and another zone each for a DPS instance. The DPS instances are configured to round-robin binds/searches/updates/etc. among the DS master zones. This works out very well for us.

Multiple WAN connections all through one router with load balancing?

I am setting up a network in my dormatory for myself and about 20 friends. about half of us have DSL connections at the moment. Is there a way to have all the DSL connections (possibly run through cheap home DSL routers) all connect into a cisco router that then acts as the gateway for our entire network? woudl it be possible for each internet request to go out over the connection that has the least load AND also be able to use some sort of load balancing, so one user cant use all of the outgoing/incoming bandwidth?
If you have any ideas please let me know

Hi Ian,
To get this working, you would either need to use something like PPP to bundle your links together or use a dynamic protocol.
In bundling the links, you could make them appear as one link, with a single IP address each end and the router takes care of distributing the load. To implement this though, you would need control of both sides of the link, or be terminating with one carrier who is happy to implement this for you.
The second is to use a dynamic protocol (such as eigrp, ospf, etc), which can build up a map of the network to router from point a to point b. For this you also need control of the link.
I can't think of another method, unless you can control the link from both sides. Your other option it to pool your money and buy a larger link or a leased line. If you bought a leased line or two, your carrier would be more than happy to talk to you about routing over that, but generally you're looking at mega bucks for that.
HTH,
Mark

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