Lync 2010 and ACE load balancing

Hi there,
Has anyone deployed [or will be deploying] Lync 2010 utilising the ACE as a hardware load balancer. The ACE is not {yet] on the Microsoft list of supported devices for this product, but I am told this because of lack of documentation from Cisco.
The consensus from a few colleagues is that it should work as it did for OCS, which we have already deployed, so assuming that the set up and operation is similar, there shouldn't be much difference in the configurations.
regards,
Glenne.

Hey Glenne,
It seems you got that working already but I wanted to share this simple sample:
parameter-map type http PARAMETER
set header-maxparse-length 65535
set content-maxparse-length 65535
============================================
interface vlan 112
ip address 10.198.16.71 255.255.255.192
alias 10.198.16.124 255.255.255.192
peer ip address 10.198.16.72 255.255.255.192
mac-sticky enable
access-group input anyone
nat-pool 25 10.198.16.125 10.198.16.125 netmask 255.255.255.0 pat
service-policy input ANS-MGT
service-policy input VIPS
no shutdown
============================================
policy-map multi-match VIPS
class LYNC_VIP
    loadbalance policy LYNC_POLICY
    ssl-proxy server SSL_LYNC_TERMINATION
    loadbalance vip icmp-reply active
    nat dynamic 25 vlan 112
    appl-parameter http advanced-options PARAMETER
============================================
class-map match-all LYNC_VIP
2 match virtual-address 10.198.16.125 tcp eq https
============================================
ssl-proxy service SSL_LYNC_TERMINATION
key tac-key
cert tac-cert
chaingroup tac-chaingroup
============================================
policy-map type loadbalance first-match LYNC_POLICY
class class-default
    sticky-serverfarm LYNC_COOKIE
============================================
sticky http-cookie ACE_COOKIE LYNC_COOKIE
timeout 30
replicate sticky
serverfarm LYNC_FARM
============================================
serverfarm host LYNC_FARM
rserver LYNC_SERVER1 80
    inservice
rserver LYNC_SERVER2 80
    inservice
============================================
rserver host LYNC_SERVER1
ip address 10.198.16.93
inservice
rserver host LYNC_SERVER2
ip address 10.198.16.113
inservice
===========================================
Jorge

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Ask the Expert: Configuration and Troubleshooting the Cisco Application Control Engine (ACE) load balancer

With Ajay Kumar and Telmo Pereira
Welcome to the Cisco Support Community Ask the Expert conversation. This is an opportunity to learn and ask questions about configuration and troubleshooting the Cisco Application Control Engine (ACE) load balancer with Cisco expert Ajay Kumar and Telmo Pereira. The Cisco ACE Application Control Engine Module for Cisco Catalyst 6500 Series Switches and Cisco 7600 Series Routers is a next-generation load-balancing and application-delivery solution. A member of the Cisco family of Data Center 3.0 solutions, the module: Helps ensure business continuity by increasing application availability Improves business productivity by accelerating application and server performance Reduces data center power, space, and cooling needs through a virtualized architecture Helps lower operational costs associated with application provisioning and scaling
Ajay Kumar is a customer support engineer in the Cisco Technical Assistance Center in Brussels, covering content delivery network technologies including Cisco Application Control Engine, Cisco Wide Area Application Services, Cisco Content Switching Module, Cisco Content Services Switches, and others. He has been with Cisco for more than four years, working with major customers to help resolve their issues related to content products. He holds DCASI and VCP certifications.
Telmo Pereira is a customer support engineer in the Cisco Technical Assistance Center in Brussels, where he covers all Cisco content delivery network technologies including Cisco Application Control Engine (ACE), Cisco Wide Area Application Services (WAAS), and Digital Media Suite. He has worked with multiple customers around the globe, helping them solve interesting and often highly complex issues. Pereira has worked in the networking field for more than 7 years. He holds a computer science degree as well as multiple certifications including CCNP, DCASI, DCUCI, and VCP
Remember to use the rating system to let Ajay know if you have received an adequate response.
Ajay and Telmo might not be able to answer each question due to the volume expected during this event. Remember that you can continue the conversation on the Data Center sub-community discussion forum Application Networking shortly after the event.
This event lasts through July 26, 2013. Visit this forum often to view responses to your questions and the questions of other community members.

Hello Krzysztof,
Another set of good/interesting questions posted. Thanks!
I will try to clarify your doubts.
In the output below both resources (proxy-connections and ssl-connections rate) are configured with a min percentage of resources (column Min), while 'Max' is set to equal to the min.
ACE/Context# show resource usage
                                                     Allocation
        Resource         Current       Peak        Min        Max       Denied
-- outputs omitted for brevity --
proxy-connections             0      16358      16358      16358      17872
ssl-connections rate          0        626        626        626      23204
Most columns are self explanatory, 'Current' is current usage, 'Peak' is the maximum value reached, and the most important counter to monitor 'Denied' represents the amount of packets denied/dropped due to exceeding the configured limits.
On the resources themselves, Proxy-connections is simply the amount of proxied connections, in other words all connections handled at layer 7 (SSL connections are proxied, as are any connections with layer 7 load balance policies, or inspection).
So in this particular case for the proxy-connections we see that Peak is equal to the Max allocated, and as we have denies we can conclude that you have surpassed the limits for this resource. We see there were 17872 connections dropped due to that.
ssl-connections rate should be read in the same manner, however all values for this resource are in bytes/s, except for Denied counter, that is simply the amount of packets that were dropped due to exceeding this resource.
For your particular tests you have allocated a min percentage and set max equal to min, this way you make sure that this context will not use any other additional resources.
If you had set the max to unlimited during resource allocation, ACE would be allowed to use additional resources on top of those guaranteed, if those resources were available.
This might sound a great idea, but resource planning on ACE should be done carefully to avoid any sort of oversubscription, specially if you have business critical contexts.
We have a good reference for ACE resource planning that contains also description of all resources (this will help to understand the output better):
http://www.cisco.com/en/US/docs/interfaces_modules/services_modules/ace/v3.00_A2/configuration/virtualization/guide/config.html#wp1008224
1) When a resource is utilized to its maximum limit, the ACE denies additional requests made by any context for that resource. In other words, the action is to Drop. ACE should in theory silently drop (No RST is sent back to the client). So unless we changed something on the code, this is what you should see.
To give more context, seeing resets with SSL connections is not necessarily synonym of drops. As it is usual to see them during normal transactions.
For instance Microsoft servers are usually ungracefully terminating SSL connections with RESET. Also when there is renegotiation during an SSL transaction you may see RESETS, but this will pass unnoticed for end users.
2) ACE will simply drop/ignore new connections when we reach the maximum amount of proxied connections for that context. Exisiting connections will continue there.
As ACE doesn't respond back, client would simply retransmit, and if he is lucky maybe in the next attempt he will be able to establish the connection.
To overcome the denies, you will definitely have to increase the resource allocation. This of course, assuming you are not reaching any physical limit of the box.
As mentioned setting max as unlimited might work for you, assuming there are a lot of unused resources on the box.
3) If a new connection comes in with a sticky value, that matches the sticky entry of a real server, which is already in MAXCONNS state, then both the ACE module/appliance should reject the connection and that sticky entry would be removed.
The client would at that point reestablish a new connection and ACE would associate a new sticky entry with the flow for a new RSERVER after the loadbalancing decision.
I hope this makes things clearer! Uff...
Regards,
Telmo

ACE load balancing and testing using soapUI

Hey, I am trying to crowd source a solution for this problem.
A client is testing using soapUI to an application that is being load balanced via ACE. There are two webservers behind the VIP servicing the client request. When client tests, requests are timing out per the soapUI log. A packet capture was taken and it clearly shows that ACE is not forwarding the HTTP data back to the client. When client tests by bypassing the ACE load balancer, it works fine. But, there are other clients from other applications that are making successful connection to the load balanced application via the VIP.
Question, is there any thing unique with making HTTP/XML based requests using soapUI? LB configuration is shown below:
class-map match-all EAI_PWS_9083
2 match virtual-address 10.5.68.29 tcp eq 9083
serverfarm host EAI_PWS_9083
description WebSphere Porduction
failaction purge
probe tcp9083
rserver ESSWSPAPP01 9083
    inservice
rserver ESSWSPAPP02 9083
    inservice
policy-map type loadbalance first-match L7_POLICY_EAI_PWS_9083
class class-default
    serverfarm EAI_PWS_9083
policy-map multi-match L4SLBPOLICY
class EAI_PWS_9083
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    loadbalance policy L7_POLICY_EAI_PWS_9083
    loadbalance vip icmp-reply active
    appl-parameter http advanced-options CASE_PARAM
parameter-map type http CASE_PARAM
case-insensitive

Hi,
Your configuration looks fine. I am not familiar with soapUI but if it is like a normal TCP connection followed by HTTP requests, i don't see why this shouldn't work.
Do you know if there is a difference while using soapUI and normal request using browser?
Regards,
Kanwal

Unknown Presence in Lync 2010 and Lync 2013 co-existence

I have lync 2010 and lync 2013 in my environment. Everything was working fine except when I moved the DNS of the Lync 2013 pool to the load balancer. When I did that, users on lync2013 could see the presence of users on Lync2010 pool but not vice versa.
I have point the Lyncdiscoverinternal.domain.com to the lync2013 pool DNS. I have opened migration ports on the load balancer but still not working. It works perfectly fine if I point the DNS of the pool to one server directly without going
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Am I missing anything here?
Thanks!
Alert from TechNet Posting

Hi Kojo Obeng Antwi,
Please check out the following information.
Deploying DNS load balancing on Front End pools requires you to perform a couple of extra steps with FQDNs and DNS
records.
A pool that uses DNS load balancing must have two FQDNs: the regular pool FQDN that is used by DNS load balancing (such as pool01.contoso.com), and resolves to the physical
IPs of the servers in the pool, and another FQDN for the pool’s Web services (such as web01.contoso.com), which resolves to virtual IP address of the pool.
In Topology Builder, if you want to deploy DNS load balancing for a pool, to create this extra FQDN for the pool’s Web services
you must select the Override internal Web Services pool FQDN check box and type the FQDN, in the Specify the Web Services URLs for this Pool page.
To support the FQDN used by DNS load balancing, you must provision DNS to resolve the pool FQDN (such as pool01.contoso.com) to the IP addresses of all the servers in the pool
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Best regards,
Eric

Need help with ACE Load Balancing Base on URL pattern

This is the first time for me trying to configure something like this on the ACE load balancer. I need help configuring a load balancing policy base on URL pattern. URL https://ineedhelp.com base on /willuhelpme and /imlost
Key: ineedhelp_key
cert: ineedhelp_cert
serverfarmA
serverA 10.1.1.1 443
serverfarmB
serverB 10.1.1.2 443
ineedhelp.com/willuhelpme-------serverfarmA
ineedhelp.ocm/imlost---------------serverfarmB

This is the first time for me trying to configure something like this on the ACE load balancer. I need help configuring a load balancing policy base on URL pattern. URL https://ineedhelp.com base on /willuhelpme and /imlost
Key: ineedhelp_key
cert: ineedhelp_cert
serverfarmA
serverA 10.1.1.1 443
serverfarmB
serverB 10.1.1.2 443
ineedhelp.com/willuhelpme-------serverfarmA
ineedhelp.ocm/imlost---------------serverfarmB

Ace load balancing, inservice/no inservice serverfarms

I've started working with an ACE load balancer and came across something that just didn't add up to me. I can pull and put servers in and out of rotation without a problem however when working with a serverfarm or a group of servers I have to pull each one individually and can't find a way to remove say the entire serverfarm via one command. Does anyone know of a way to put a serverfarm 'inservice' or set it to 'no inservice' that would make it easier for large groups of servers needing to be adjusted.
Sorry if this isn't the write forum for this kind of question. Please feel free to move it if needed.

Hello Chris,
There is no toggle to set every rserver under a serverfarm out of service. You can only take a single rserver out of service at a global level, or under a serverfarm inividually.
One thing to think about - bringing down all of the servers would be the same as removing the serverfarm from under the policy map type loadbalance since it would effectively bring the vip down.
Regards,
Chris Higgins

ACE - Load Balance SMB?

Can the ACE load balance SMB?
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Server 2 DNS is msserver2
VIP DNS is msserver
Can the ACE replace the server name (or IP address) in a tree connect query with the actual real server name that is chosen for the request?

Hi , If I understood you correctly and you're looking for intelligent way to loadbalance NetBios/Samba - I'm afraid there is no such functionality on ACE, we can only do simple L4 loadbalancing for such sessions and can't change anything.

SSL Cetificate and F5 load balancer.

Hi All,
I need to created SSL certificate to enable SSL on the HTTP server can you please give me the steps for that also i need to configure SSL on the load balancer how would i do that, i will be thankful if anybody can provide me detail steps, thanks in advance.
Thanks,
Virendra

Hi,
What is the application release?
For SSL, please see these documents.
Note: 123718.1 - 11i: A Guide to Understanding and Implementing SSL for Oracle Applications
Note: 300969.1 - Troubleshooting SSL with Oracle Applications 11i'
Note: 376700.1 - Enabling SSL in Release 12
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Note: 380489.1 - Using Load-Balancers with Oracle E-Business Suite Release 12
Note: 727171.1 - Implementing Load Balancing On Oracle E-Business Suite - Documentation For Specific Load Balancer Hardware
Note: 601694.1 - How To Check Session Persistence On BigIP F5 And Cisco Ace Load Balancer Appliances
Note: 603325.1 - Using Cisco ACE Series Application Control Engine with Oracle E-Business Suite Release 12
Regards,
Hussein

Need assistance creating applications with superseedence to uninstall Office 2010, Lync 2010 and then install Office 365 click to run 2013

We are getting ready in a few months to uninstall our locally installed Office 2010 and head to the cloud with Office 365 2013. I have created applications to uninstall Office 2010 and Lync 2010 and then added them to the supersedence tab for Office 365
office 2013 click to run with appv5.
When deploying the office 365 2013 application it does not uninstall office 2010 or lync 2010 with the supersedence. I am able to manually uninstall Office 2010 and Lync 2010 with the command lines I am using in the applications.
The application uninstall for Office 2010 is:
The application uninstall is an exe so I created an application, created a deployment type with the location of our Office 2010 admin point, installation program and uninstall program are set with the same line as I have tried to deploy it separately and
also as a supersedence in the Office 365 application setup.exe /uninstall ProPlus /config "\\sccmserver\share\Office2010\ProPlus.ww\silentuninstallconfig.xml. The silentuninstallconfig.xml was created from the original config.xml file and edited
to these settings:<Configuration Product="ProPlus">
<Display Level="none" CompletionNotice="NO" SuppressModal="yes" AcceptEula="yes" />
<Setting Id="Reboot" Value="Never" />
<Setting Id="SETUP_REBOOT" Value="NEVER" />
<OptionState Id="ProductFiles" State="Local" Children="force" />
</Configuration>
The detection method is the folder path to see that office 14 exists. When I deploy this the machines finish with success showing this exists, but does not uninstall Office 2010.
running the command line manually mapped to this location on a machine uninstalls office 2010 without issue.
Lync 2010 uninstall:
Lync is an exe so I am using the LyncSetup.exe /silent /uninstall. The application is in the supersedence tab for Office 365 2013. This never installs. If I create a softare distribution and deploy it on its own it uninstalls without issue.
We are going to use Lync 2013 with our office 365 2013 installation so we need to uninstall this. The detection method for lync is file system folder and the Microsoft lync folder for detection.
MS Office 15 (Office 365) was created with the click to run tool. I can install this with the application I created using the appv5 package created with the click to run tool. The issue is we need Office 2010 and Lync 2010 uninstalled first.
Having both versions of Office installed in test has caused issues where Office 15 365 will not list in add and remove programs and cannot be uninstalled even with the fix it article to remove office 2013.
I have looked at many articles and so far it is not working for us. Any help appreciated to get us to the cloud.
Thanks,
Brit

The applications I have for uninstall of office 2010 and Lync 2010 for some reason do not uninstall. Manually testing the command lines they do. The detection method seems to be hanging things up. On the lync uninstall detection method I have
the setting type of file system, type folder, path c:\program files\ folder name Microsoft Lync.
I highly recommend using something other than a file/folder "exists" detection method. Installers are constantly leaving things behind due to environmental inconsistencies. It may leave files/folders behind with a schedule to delete files on next reboot.
These things are unpredictable and very hard to use. I just use the "HKLM\Software\Microsoft\Windows\CurrentVersion\Uninstall" Registry location. There you can actually key off the "Product Version" DWORD as well which gives you an even more accurate method
to determine if the application you are trying to deploy (or expect to exist) is truly there. This, of course, being if you are not using an MSI. If you have MSI technology ALWAYS use the product code unless the person writing the MSI chooses to use the same
product code for every version release of their product. In which case, Use the registry method.
As far as getting the supersedence and everything working. You need to start from the basics. Create Applications for all of the apps you want to remove. Make sure they install and uninstall properly (seems like overkill but it isn't that hard). Once you
have working install/uninstall applications then you can easily apply supersedence to your new applications with a setting of Uninstall on the superseded apps you should have no problem getting rid of them. I have done this for numerous things.
For example, I did this with Cisco Jabber to replace older versions of jabber, older versions of cisco unified personal communicator and lync and OSC. All of these replaced versions had to have an Application but once it was in it took two seconds to apply
all the supersedence rules and now I know when I push that software out no matter version is running on any machine it will pull all the old apps off and put the new one on.
Dustin Estes - MCP | www.dustinestes.com

Lync 2010 and Lync 2013 blinking icon in taskbar not working properly

Hi,
We're experiencing a strange behaviour. Lync IM notifications are supposed to work this way below:
1) Notification bubble on the right-bottom corner
2) After a few seconds, a blinking icon in the task bar
3) After a few seconds, a coloured icon remains in the task bar
Some of our users, both Lync 2010 and Lync 2013, go 1) and 2) but then icon won't remain in the task bar, so they don't realize they have a conversation waiting (Windows XP and Windows 7).
If they open the icon, the conversation is there and coloured, and they can answer.
In my computer, it has also happened but most of the time it works fine (testing it, maybe it works 15 times and fails 1). Nevertheless, a lot of people is suffering from this strange behaviour.
We have looked into the causes but haven't found anything.
Any clue?
Thanks!

How long have you seen the problem?
What version of your Lync client? Try to update your Lync client to the latest version.
Try to repair office 2013.
Uninstall and reinstall Lync 2010.
Please install Lync 2013 or Lync 2010 on a fresh installation of Window to check if you can still see this problem.
Lisa Zheng
TechNet Community Support

H-REAP and Client Load-Balancing

I'm told by Cisco that H-REAP does not support client load-balancing.
We have a situation where we want to deploy LWAPPs using H-REAP into a conference room where training would take place.
Any suggestions on how to overcome the inevitable slowness these people are going to experience from being unevenly associated with the APs?
We can't re-write the application so we are looking for a wireless solution.
Anyone hear about how other organizations have dealt with this type of situation?
I'll be glad to supply more details if I am not being clear in my description of the problem.
Thanks in advance. All responses will be rated.
Paul

This is the functionality which is missing in H-REAP: Client and Network Load Balancing
"Radio Resource Management (RRM) load-balances new clients across grouped lightweight access points reporting to each controller. This function is particularly important when many clients converge in one spot (such as a conference room or auditorium) because RRM can automatically force some subscribers to associate with nearby access points, allowing higher throughput for all clients. The controller provides a centralized view of client loads on all access points. This information can be used to influence where new clients attach to the network or to direct existing clients to new access points to improve wireless LAN performance. The result is an even distribution of capacity across an entire wireless network.
Note: Client load balancing works only for a single controller. It is not operate in a multi-controller environment."
I suppose if we limit the number of users that can associate with a particular AP then we will achieve some client load-balancing. Though a hard limit on the number of end-users will also lead to situations where some end users will not be allowed any access.

Is it possible to use UCS Blade Servers in ACE Load Balancing

Hi all ,
Is it possible to use UCS Blade Servers in ACE Load Balancing ?? Please note that UCS Blade Servers are not connected directly to 6500 Switch where ACE Module installed .i am expecting a good suggestion from whether ACE or Switching Expert
Thanks in advance
Sanjeevi

There is nothing that would prevent you from loadbalancing the applications that run on UCS servers. ACE can loadbalance applications that are directly L2 attached (bridged or routed mode) or even servers that are multiple hops L3 hops away using one-armed mode with source nat. The key to this is that the return traffic from the server needs to make it back to the ACE.

ASA and vpn load balancing

Hi,
I am configuring 2 ASA5540 for internet trafic inside to outside ,
outside to inside (web,smtp) but also vpn load balancing for client to site , site to site and webvpn.
In the doc I can configure them for internet trafic as Active/Standby or Active/active.
for vpn : I can use vpn load balancing
But no information if I want to use the active/passif and vpn load balancing together.
Any thoughts on which way to go? what is the best thing to do ?
Regards

Hi,
I think that you cannot use an Active/Active configuration for VPN connections as it is stated on Cisco's documentation: "Note: VPN failover is not supported on units that run in multiple context mode as VPN is not supported in multiple context. VPN failover is available only for Active/Standby Failover configurations in single context configurations" available at http://www.cisco.com/en/US/products/ps6120/products_configuration_example09186a0080834058.shtml
Hope it helps

Co-Existence Lync 2010 and Lync 2013

Hi,
How do we check that CMS is moved from lync 2010 to Lync 2013 in Co-Existance environment lync standard edition.
I know that users are moved form Lync 2010 to Lync 2013 but i don't if CMS is moved? And in the existing co-existence we have two edge servers Lync 2010 and Lync 2013. How can i check if traffic is routing through Lync 2010 or lync 2013.
Because we want to Decommission the Lync 2010 STD Edition before doing this i want to make sure every thing go smooth.
Please help me on this.
Thanks
Whenever you see a helpful reply, click on Vote As Helpful & click on Mark As Answer if a post answers your question.

To find out if the CMS is moved:
Get-CsConfigurationStoreLocation, if it's a standard server it will tell you the pool name. If it's an Enterprise server, it will tell you the SQL server name associated with the pool.
http://technet.microsoft.com/en-us/library/gg412814.aspx
Otherwise it's at the top of the topology builder (the top top part that says Lync Server in the left pane, under the Central Management Server spot in the right pane.
For a full decommission article, here's a decent one with screenshots. As Ben said, if you can advise about the other places we could be more specific.
http://www.oiboran.com/?p=1073
Please remember, if you see a post that helped you please click "Vote As Helpful" and if it answered your question please click "Mark As Answer".
SWC Unified Communications

Phone edition Aries Polycom CX600 coexistence - Lync 2010 and 2013

Hi all,
Currently busy with a Lync 2010 > 2013 migration where Aries Lync phones like Polycom CX 600 (using a blend of USB tethering, PIN authentication as well as common area phones) are involved. Phones have a blend of different CU releases ranging from .4066
(CU5) to .4451 (CU14)
User migration must be done in stages. That’s presenting a challenge in that Lync 2010 and 2013 must coexist for some time, yet providing seamless support for Lync phones.
The normal migration scenario will be based on a site-by-site migration: users are moved from 2010 to 2013, DHCP options for that site are changed to provide relevant Lync phones the new Lync 2013 pool parameters. HOWEVER, there is a considerable number
of users travelling across sites, and it’s likely occurrence that a user still on 2010 would travel to a site migrated to 2013 (including phones). And the other way round can also occur.
Based on this, my questions are:
1) Can a Lync 2010 user sign-in (USB tethering) on a phone if DHCP is providing options for Lync 2013?
2) Can a Lync 2010 user sign-in (PIN auth) on a phone if DHCP is providing options for Lync 2013?
3) Can a Lync 2013 user sign-in (USB tethering) on a phone if DHCP is providing options for Lync 2010?
4) Can a Lync 2013 user sign-in (PIN auth) on a phone if DHCP is providing options for Lync 2010?
Also, is there any dependancy on a specific CU version for the sign-in process to succeed? Note all discovery records are strict domain matching compliant.
I was hoping LPE would feature a redirect mechanism like with desktop client but based on the very little specific literature available, that does not seem the case. Any advice would be very welcome.
thanks all.
Alessio Giombini | Microsoft Solutions Architect | Twitter: @AlessioGiombini
Lync 2013 Detailed Design Calculator: try it at http://goo.gl/jU1hZR

Hi,
You can refer to the following link of “Lync 2010 – 2013 Migration: Lync phone edition devices”:
http://unifiedme.co.uk/2013/09/lync-2010-2013-migration-lync-phone-edition-devices/
Note: Microsoft is providing this information as a convenience to you. The sites are not controlled by Microsoft. Microsoft cannot make any representations regarding the quality, safety, or suitability of any software or information found there.
Please make sure that you completely understand the risk before retrieving any suggestions from the above link.
Best Regards,
Eason Huang
Eason Huang
TechNet Community Support

Lync 2010 and ACE load balancing

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