On GSS(global site selector)network max configurable the number of backup?

HI..
I would like to know the max backup gss number when we configure gss network.
I did two gss when I configure gss topology. there are no problem when I configure two gss to active and the other standby.
but I read the cco document that the gss cluster is being max up to 8 gss box.
is it possible topology?
when I configure two more gss on one cluster, I occered the err log on primary gss.

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Ask the Expert: Global Site Selector Configuration and Troubleshooting

Welcome to this Cisco Support Community Ask the Expert conversation. This is an opportunity to learn and ask questions about configuring and troubleshooting the Global Site Selector (GSS) with expert Swati Chopra.
GSS devices represent the next generation of application switches and global server load balancing (GSLB) appliances. Working together with the Cisco ACE Module and Cisco ACE 4710 appliance, these devices form an application-fluent networking solution that improves availability, acceleration, and security for data center applications.
The primary role of Cisco GSS is to implement the business continuance and disaster recovery policies of a business by optimizing and securing the Domain Name System (DNS) infrastructure of the data center. It does this by integrating with the DNS infrastructure and responding to the client DNS requests, thereby directing the client to the site that is best able to serve its needs.
Swati Chopra is a CCNA, CCNP, and VCP certified customer support engineer for content switching, covering technologies such as Cisco Application Control Engine, Cisco Wide Area Application Services, Global Site Selector, Cisco Content Services Switches, and Digital Media Suite. She has been with Cisco for more than three years and has worked with most of the high-end customers on content-related complex cases. She completed her master’s degree in finance, was heading an online education project in collaboration with e-Sylvan, and later moved to technical services because of her love for technology. She is actively involved with diverse Cisco initiatives such as Connected Women, WISE, and Cisco Career Connections and recently hosted a “Birds of Feather” table at Cisco’s Women of Impact conference.
Remember to use the rating system to let Swati know if you have received an adequate response.
Because of the volume expected during this event, Swati might not be able to answer every question. Remember that you can continue the conversation in the Data Center community under subcommunity Application Networking shortly after the event. This event lasts through April 25, 2014. Visit this forum often to view responses to your questions and the questions of other Cisco Support Community members.

Hi Sarah,
The load balancing mechanism for GSS requests is done via different methods. We can use these methods to define how the load is shared for different balance clauses within the same rule. The 6 methods we use are:
–round-robin—The GSS cycles through the list of answers that are available as requests are received. Each resource within an answer group is tried in turn. The GSS cycles through the list of answers, selecting the next answer in line for each request. This is the default.
eg: if we have 2 answers in answer group then GSS will provide them alternatively.
–least-loaded—The GSS selects an answer based on the load reported by each VIP in the answer group. The answer reporting the lightest load is chosen to respond to the request.The least-loaded option is available only for VIP-type answer groups that use a KAL-AP or Scripted keepalive, as they provide the GSS with detailed information on the SLB load and availability.
eg: if one answer has higher load than the other, than first answer will not be provided until its load goes down the other answers
–ordered—The GSS selects an answer from the list based on precedence; answers with a lower order number are tried first, while answers further down the list are tried only if preceding answers are unavailable to respond to the request.
for eg: answer with ordered number 1 will be provided first till it becomes unavailable. Once it is unavailable then answer with ordered list number 2 will be provided
–weighted-round-robin—The GSS cycles through the list of answers that are available as the requests are received, but sends requests to favored answers in a ratio determined by the weight value assigned to that resource.
eg: if one answer has more weight(80%) than the other answer(20%), then it will be used 8 times out of 10.
–hashed— When the GSS uses the hashed balance method, elements of the client's DNS proxy IP address and the requesting client's domain are extracted to create a unique value, referred to as a hash value. The unique hash value is attached to and used to identify a VIP that is chosen to serve the DNS query.
The use of hash values makes it possible to "stick" traffic from a particular requesting client to a specific VIP, ensuring that future requests from that client are routed to the same VIP. This type of continuity can be used to facilitate features, such as online shopping baskets, in which client-specific data is expected to persist even when client connectivity to a site is terminated or interrupted.
The GSS supports the following two hashed balance methods. You can apply one or both hashed balance methods to the specified answer group.
• By Source Address—The GSS selects the answer based on a hash value created from the source address of the request.
• By Domain Name—The GSS selects the answer based on a hash value created from the requested domain name.
for eg: a user using same source ip will get the same answer from GSS if we do source address hashing.
-DNS Race (Boomerang) Method-The GSS supports the DNS race (boomerang) method of proximity routing, which is a type of DNS resolution initiated by the GSS to load balance 2 to 20 sites.
The boomerang method is based on the concept that instantaneous proximity can be determined if a CRA within each data center sends an A-record (IP address) at the exact same time to the client's D-proxy. The DNS race method of DNS resolution gives all CRAs (Cisco content engines or content services switches) a chance at resolving a client request and allows for proximity to be determined without probing the client's D-proxy. The first A-record received by the D-proxy is, by default, considered to be the most proximate.
Use case is mainly with CRA's.
Hope this helps. Please feel free to revert if you have follow-up questions.
Thanks,
Swati

SAP LDAP Connector / UME LDAP and Global Site Selector (GSS)

Hi,
I'm wondering if SAP LDAP Connector / UME LDAP will work with Global Site Selector service, such as CISCO GSS 4400 Series, so that GSS can provide load-balancing for LDAP access.
If it works, is there a specific configuration on the SAP side?
Thanks in advance.
-denny-

Hey Denny,
Wondering if you ever sorted this out. I'm trying the same thing right now and UME is failing (and portal won't start) when I use the FQDN of the GSS. Behavior is strikingly similar to using the FQDN of the Active Directory domain. The only way I found to use AD as an LDAP source is to list individual DCs in the UME config. I'm hoping to use GSS instead.
-Kevin

How do I configure the number of connection in the pool for webservice axis

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How do I configure the number of connection in the pool using xml.
We are using axis 1.4 and commons-httpclient-3.0.1Is there any way we can do it using the client-config.wsdd file.
We do not want to do any modification in the code for this.
Is it possible to set socket timeout also in the wsdd file.
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Ottran

Export them at a smaller size:
File -> Export - not the options at 'Size'
Regards
TD

Global Site Selector(GSS)

Hi all,
This is regarding new cisco applience called GSS,can anyone share how to config the GSS in real time with example,I hope I will get the responce soon,coz I have to do one installation soon.
Thankx@Regds
saji k.s
DOHA

try here...
http://cisco.com/en/US/products/hw/contnetw/ps4162/tsd_products_support_series_home.html

Cisco Global Site Selector

Hello
Looking at the datasheet for the Cisco ACE GSS 4492R GSS device, under Global Traffic Management
" The Cisco GSS 4492R can be deployed as a standalone global traffic manager that globally load balances client requests across distributed data centers using network performance metrics such as content use, round-trip time (RTT) between client and the closest data center, routing topology, and any device performance values that are available through SNMP."
The part that interrests me is the RTT between client and closest data center. Looking at the config guide and other documentation I can see how make balancing decisions based on the client DNS server and find nothing based on actual client.
So the question - Is it possible to make balancing decisions based on round-trip time (RTT) between the actual client and the closest data center.

Hi Neil,
The feature you are referring to is Network Proximity. The documentation could be a bit confusing because the "client" is relative. To you and me, the client is the person (or application) making the original DNS request. To the GSS, the client is that person's (or application's) local D-Proxy (DNS server).
When an application makes a DNS request to it's local D-Proxy, the D-Proxy will then attempt to resolve the request, but will source the request with it's own IP address, not the actual client's. Therefore, by the time the request reaches the GSS, the GSS has no information on the original "client" or application that originated the DNS request. It only knows the source IP address of the requesting D-Proxy and the domain it is requesting resolution for. So to answer your question, no, the GSS cannot make a load balancing decision based on RTT between actual "client" and data center because it does not have sufficient data to make such a decision.
In most cases, each actual client will be using a D-Proxy that is local to them, so the effect is the same as what you are asking for. But if the D-Proxy is remote to the actual client, then you could get unexpected results.
Hope this helps,
Sean

How to configure the number of weeks in a calendar

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Hi,
According your post, I know you would like to set the item display limit in Status List web part.
In the web part, the number of items to display is based on the view which you selected when configuring the web part. The default view for status list is status list view.
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It could be a potential issue in SharePoint 2010.
We will log this issue to our suggestion box. As after the submission, we may not have any time guarantee when the fix may be released, but it may come out on next cumulative update.
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Tracy Cai
TechNet Community Support

Include a network drive in the Time Machine backup?

I have a USB drive connected to the Airport Extreme. I would like its contents be included in the Time Machine backup.
Is this possible?

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How to configure the number of icons to appear on the grid?

Just curious. Is there a way to configure the Application Grid on my leopard dock such that it displays the applications in a X by Y number of icons. Thanks.

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Global Site Selector (GSS) support DNSSEC ?

Hi all,
When will GSS support DNSSEC ?
Thanks
Eric

Last I heard GSS currently does not support DNSSEC. It is a feature that is being
discussed for inclusion in a future release.
You should contact your sales contact at Cisco to get more information and/or express your need for this feature.
Gilles.

Cisco Global Site selector Issue

Hi all ,
I have a cisco GSS-4492R-K9 in my network . Currently when I am trying to do any changes it is giving me a following error .
Couls anybody pls let me know why it is happening
GSS#copy run sta
can't create lock file /etc/mtab~12368: No space left on device (use -n flag
to override)
Jul 24 07:09:30 SYS-4-LIB_UTIL_64[12369] Unable to 'unlock' safe-state:
Read-only file system
can't create lock file /etc/mtab~12412: No space left on device (use -n flag
to override)
Jul 24 07:09:31 SYS-3-LOCKSTATE[12413] Cannot remount
/cisco/merlot/safe-state
your help is highly appreciable .
Rgds,

Most likely the storage device has become corrupted thus you see the filesystem working in read only mode.
There was a similar thread posted in the Application Networking forum about a year ago which suggested some remedies. Please see this link.
(You can also recategorize your question into that forum by using the widget that should appear in the top right of your screen.)

Anyone used the Global Site Selector yet ?

I believe it came out a couple of months ago. I'm looking at one versus the F5 3DNS boxes. Any thoughts ?

I haven't used it yet, but I am also interested if anyone else has some info on it.
I guess it would be a good idea to use if Cisco devices such as CSS 11000,Local directors, CSM etc. are deployed in the network.

ACE 4710- Global Site load-balancing

Does the 4710 have a feature like global site load balancing like the CSS?
We have a site that will have 2 ISPs but we don't have our own block of IP addresses to advertise so we would need to use the ISPs IP blocks. We've had issues in the past advertising one ISPs IP block out another ISP so I was wondering if there was a way we could configure the ACE similar to the way the CSS did global site load balancing. Basically have the ACE act as a DNS server and respond back with the IP address of whichever ISP we wanted the end user to come in on and use a probe to ping the ISPs remote WAN IP to verify the circuit is passing traffic and resolve the correct IP if it's not.
Thanks

ACE does not have DNS server functionality.
And these methods are not supported on the CSS anymore.
The solution we offer is to install a Cisco GSS (Global Site Selector) which can interact with the ACE or CSS or CSM to determine which vip is up or down.
Gilles.

GSS & Graceful Site Shutdown

We are considering using Global Site Selector to balance web traffic across multiple sites.
However, we use Graceful Server Shutdown (Set service weight to 0 (zero) on our CSS 11150's with ap0610108.
This gives us the ability to shut servers down gradually, while maintaining sticky sessions until they timeout.
We would like to maintain the ability to gracefully close these servers and gradually move the load to the other site(s).
But...
can we ensure that the GSS will honour a DNS request in the middle of a web session to the site that has the sticky server even if it has a weight of 0, while transferring an appropriate number of DNS requests for non-sticky sessions to the other site?
Any suggestions?

I am not too sure if the GSS will honour the request. Please share any information you find on this.

Fedora 13: After upgrading from FF3.6 to FF6.0.2 I no longer have a Java plugin. How do I configure the Java Plugin for FF 6 ? There is no Java Plugin at the site

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I have Java 1.6.0 installed in the OS at:
/usr/lib/jvm/java-1.6.0/jre/lib/amd64/libnpjp2.so
I googled how to configure Java Plugin for FF 6 for Fedora 13 and the trick was to create a soft link from /home/<userID>/.mozilla/plugins to the above libnpjp2.so

AVtech wrote:
. . . If a person can't get an answer here I don't know where else to turn since Sun certainly wouldn't offer tech support for a free product . . .These forums are user forums, and only occasionally visited by Sun employees. Sun does provide Java technical support options, although (of course) at a charge.
See:
http://developers.sun.com/services/
. . . I guess we'll just use JRE 5 until it's unsupported, whenever that will be. I'm still waiting for an answer on that question, too. See:
http://java.sun.com/products/archive/eol.policy.html
http://www.sun.com/service/eosl/
This document (part IV and Appendix) has some debugging and troubleshooting information that may allow someone involved in the problem to resolve the cause:
See:
http://java.sun.com/javase/6/docs/technotes/guides/plugin/developer_guide/contents.htm
Any steps that you can take to isolate the problem to specific Java versions, browsers, applets, web sites, operating systems (and versions), etc, would enhance the possibility of getting help.
You can try the applets at this Sun location and see if any of them are "slow".
See:
http://java.sun.com/javase/6/docs/technotes/samples/demos.html

On GSS(global site selector)network max configurable the number of backup?

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