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

Similar Messages

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

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.

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

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.

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.

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

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.

Module_data where clause using globals.site.dateNow

I'm trying (and failing) to get a list of blog posts that are excluding the not yet released posts, here is what I have:
{module_data resource="blogposts" version="v3" fields="id,siteId,blogId,postTitle,createBy,releaseDate,createDate,lastUpdateDate,enabled ,deleted,disableComments,slug,postUrl,metaBlogPostTitle,metaBlogPostDescription" skip="0" limit="10" where="\{'blog.releaseDate':\{'$lt':'{{globals.site.dateNow}}'\}\}" order="-id" collection="myData"}
The "query" works but it ignores the globals.site.dateNow and displays everything (including posts greater than today).
If I do a greater than (in testing), it doesn't display anything, it should have only displayed the unreleased blog posts.
Bug? User error? Formatting incorrect? Any tips would be great.

Hi Rich,
In your 'where' filter above, you are using, 'blog.releaseDate', if you want to filter the data based on the blog posts' release date then use 'releaseDate' only. Like this -
where="\{'releaseDate':\{'$lt':'{{globals.site.dateNow}}'\}\}"
Let me know if you need more clarification on this.
- Abhishek Maurya

Issues Working with Results of GetWebAnalyticsReportData(Global.Site,Global.ReportLevel,"TopPageForPageReport",$B4,$B5)

I created a custom Web Analytics Report in SharePoint. I went into the associated Excel file and tried to perform a vlookup to modify the report. No matter what I do, all references to any cell in the result ALWAYS end up as 0. I tried just doing a direct
reference to a cell and the result is 0. I tried changing the value to TEXT and it still is a 0.
So for example:
The returned array covers A31 to D2030. If I go to some random cell in the workbook and enter "=A32" instead of returning the value in the cell (or even the formula), it returns 0. It doesn't matter what is in the cell, whether text or number.
The formula in the cells are "=IFERROR(GetWebAnalyticsReportData(Global.Site,Global.ReportLevel,"TopPageForPageReport",$B4,$B5),$A31:$D2030)
The value in A32 is the URL of a aspx page.
I wanted to use a VLOOKUP to make the chart more readable since the URL is quite long and I wanted to strip out the common portion of the URL

Hi,
According to your description, Excel formula not working in the web analytics report.
I tried to open a “Site Web Analytics Reports - Top Visitors” report in the desktop Office application, select an empty cell, input something like “=D4”, it is populated
with the value of D4 cell immediately.
By default, SharePoint Web Analytics Service produce the analytics data and save it in an Excel file, then we should be able to manipulate this Excel file with its
data as what we do in a normal Excel file.
To narrow down the issue, I would suggest you create a new Excel file with some data in your local machine or other machines, test some simple formulas on it to see
if it is an issue of the desktop Office application.
Feel free to reply if there any progress.
Thanks
Patrick Liang
Forum Support
Please remember to mark the replies as answers if they help and unmark them if they provide no help. If you have feedback for TechNet Subscriber Support,
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Patrick Liang
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Active active sites with GSS 4400

Hi
I have a customer with two sites lets say A and B. The sites have a connection between them for internal traffic they will have two identical server farms on each site.
They plan to deploy web based applications that need to be reachable by external (internet) and internal users. They require the following functionality:
Internal users
Users on site A get sent to a VIP on site A
Users on site B get sent to a VIP on site B
If either VIP fails (due to server farm or ACE failure etc) all internal users get sent accross the internal link to the VIP that is still up.
External Users
Get sent to the best VIP based on some criteria such as proximity or IP address of requesting DNS server. If one site fails then everyone gets sent to the remaining site.
Oh and the replies need to be sticky.
Would a GSS per site and an ACE load balancer per site be enough to accomplish this ?
Also can I have different selection criteria for VIP slection depending on if the requesting DNS server is internal or external for example DNS race for external and IP address for internal ?
Regards
Pat

Thanks alot for responding me. Correct me if i am wrong. Currently site5.abc.com is active as Bridgehead Server which is automatically chosen by KCC. What you think, instead of creating new inter-site transporters link, should i manually specify site4.domain.com
as Bridgehead Server using following steps? Will it work?
Open the Active Directory Sites and Services console.
In the console tree, expand the Sites folder, expand the site to create the bridgehead server in, then expand the Servers folder.
Right click the particular server and select Properties from the shortcut menu.
When the server’s Properties dialog box opens, in the Transports available for inter-site transfer section, select the protocol for which the server is to be a bridgehead server. Click Add.
Click OK.
your response will be appreciated.
Regards.
I would not recommend doing manual configurations for bridgehead servers.
"Assigning a bridgehead server manually can cause replication problems because it prevents the Knowledge Consistency Checker (KCC) from making an automatic failover assignment if a manually selected bridgehead server fails."
Reference: http://technet.microsoft.com/en-us/library/cc776937%28v=ws.10%29.aspx
This posting is provided AS IS with no warranties or guarantees , and confers no rights.
Ahmed MALEK
My Website Link
My Linkedin Profile
My MVP Profile

Global site edit -- change tabs to spaces in DW

Is there a way in DW to do a site-wide change that replaces
all the tabs in the code with spaces? I know you can do it page by
page, but I was hoping for a faster way.
Thanks!

Tabs in the code? You mean in Code view?
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"isleta13" <[email protected]> wrote in
message
news:ehq595$c1e$[email protected]..
> Is there a way in DW to do a site-wide change that
replaces all the tabs
> in the code with spaces? I know you can do it page by
page, but I was
> hoping for a faster way.
>
> Thanks!

GSS snmp is not running but should be

Hi all,
I was trying to turn on the SNMP service on GSS appliance. I believe there are not so many CLIs I can use to turn it on. But the SNMP service on the device doesn't look like working for me.
Can anyone help me out of this? I am about to open a SR in TAC.
Thanks,
James
Device Information:
tns1.abcd.ca#sh ver
Global Site Selector (GSS)
Model Number: GSS-4492-k9
Copyright (c) 1999-2009 by Cisco Systems, Inc.
Version 3.1(0)
Uptime: 61 Days 1 Hours 48 Minutes and 35 seconds
tns1.abcd.ca#sh license installed
Licensed modules are
DDoS
tns1.abcd.ca#sh license active
Enabled modules are
DDoS
Runing configuration:
tns1.abcd.ca#sh run | grep snmp
snmp-server enable
snmp-server location Toronto
snmp-server contact [email protected]
snmp-server trap-source ethernet 1
tns1.abcd.ca#
Snmp status:
tns1.abcd.ca#sh snmp
snmp is enabled
Syslog:
tns1.abcd.ca#sh log |grep Snmp
Oct 12 15:41:26 tns1 SYS-6-SERVICES[1578] Enabling Snmp
Oct 12 15:41:27 tns1 SYS-6-SERVICES[1596] Starting Snmp
Oct 12 15:41:28 tns1 SYS-3-SERVICES[1624] Service Snmp is not running but should be.
Oct 12 15:51:35 tns1 SYS-6-SERVICES[2959] Disabling Snmp
Oct 12 15:51:36 tns1 SYS-6-SERVICES[3001] Stopping Snmp
Oct 12 15:52:26 tns1 SYS-6-SERVICES[3230] Enabling Snmp
Oct 12 15:52:26 tns1 SYS-6-SERVICES[3257] Starting Snmp
Oct 12 15:52:27 tns1 SYS-3-SERVICES[3297] Service Snmp is not running but should be.
Oct 12 16:12:59 tns1 SYS-6-SERVICES[5684] Disabling Snmp
Oct 12 16:13:00 tns1 SYS-6-SERVICES[5702] Stopping Snmp
Oct 12 16:13:44 tns1 SYS-6-SERVICES[5820] Enabling Snmp
Oct 12 16:13:45 tns1 SYS-6-SERVICES[5838] Starting Snmp
Oct 12 16:13:46 tns1 SYS-3-SERVICES[5864] Service Snmp is not running but should be.
Oct 12 16:14:50 tns1 SYS-6-SERVICES[6040] Disabling Snmp
Oct 12 16:14:51 tns1 SYS-6-SERVICES[6062] Stopping Snmp
Oct 12 16:15:15 tns1 SYS-6-SERVICES[6140] Enabling Snmp
Oct 12 16:15:15 tns1 SYS-6-SERVICES[6162] Starting Snmp
Oct 12 16:15:16 tns1 SYS-3-SERVICES[6190] Service Snmp is not running but should be.

Hi James.
This is a bug:
http://tools.cisco.com/Support/BugToolKit/search/getBugDetails.do?method=fetchBugDetails&bugId=CSCsz70369
fixed in 3.1(1)
Regards,
Fadi.

WebSite Global Redirection

Hi There,
I believe that you will find this question stupid but I have been thinking about it and I reached the point that this is "Not Doable".
If I have 2 web servers holding the same website and having the same DNS name; one of them is in Europe and the other one is hosted in the far east.
My goal is that when a request comes from Europe or USA, the Europe server will get this request and if the request is generated from the far east, the relevant server will get the request.
I don't want to do this through the web servers themselves, but I need to do it through any routing technique, global redirection or DNS mechanism.
I know it sounds weird, but is this achievable in ANY way ?!?!?! Even if it involved expensive hardware platforms.
Thanks.
Salem.

Salem,
this is absolutely not a stupid question and it is do-able.
This is called network proximity routing.
The solution is based on DNS.
The idea is that when you get the dns request you check ask some probing devices [router] to measure the RTO time from the router to the client.
Hopefully, the router closest to the client will have the best RTO. the DNS server can then select the right server ip address to send its response.
The Cisco does this operation using a Global Site Selector (GSS). The configuration guide for network proximity is at :
http://www.cisco.com/en/US/products/hw/contnetw/ps4162/products_configuration_guide_chapter09186a008032cbd9.html#wp1176948
See the example, this is more or less the same sa what you are asking.
This is not easy to understand the first time you have to do it, so you might require some assistance from a local Cisco SE.
Gilles.

Global Site Selector(GSS)

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