Port based LB and Local Director
My customer would like to know whether the Local Director supports Load Balancing using the source port information. If this is possible any document on the configuration wouldbe highly appreciated.
Regards,
Mahesh
http://www.cisco.com/en/US/products/sw/iworksw/ps2769/products_maintenance_guide_chapter09186a008007d9fa.html#xtocid225795
as per this document i think the loadbalancing based on source port information cannot be done.
''The MNLB Services Manager makes the load-balancing decisions based on application availability, server capacity, and load distribution algorithms such as round robin or least connections, or the Dynamic Feedback Protocol (DFP).''
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Weblogic's redirect and Local Director session stikiness.
Hi all,
We've been facing a very painfull problem in my company. Basically, it relates
to the fact that weblogic 'uselessly' makes a redirect to index.jsp everytime
somebody tries to reach our website.
The redirect itselve is bad, but when we have Local Director configured in front
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Thanks,
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message committed. Could be the same freaky thing.
Peace,
Cameron Purdy
Tangosol, Inc.
Clustering Weblogic? You're either using Coherence, or you should be!
Download a Tangosol Coherence eval today at http://www.tangosol.com/
"Rodrigo Rosa" <[email protected]> wrote in message
news:3c5f0dcb$[email protected]..
>
Hi all,
We've been facing a very painfull problem in my company. Basically, itrelates
to the fact that weblogic 'uselessly' makes a redirect to index.jspeverytime
somebody tries to reach our website.
The redirect itselve is bad, but when we have Local Director configured infront
of our farm, with stickness enabled, the damn think locks for 3+ secondsbefore
sending the also weird '0000' characters (that I suppose, indicate thepage or
transaction was completed). This 0000 comes from Weblogic itself (wenotice it
sends that even when we are not behind local director). We are alsoexpiriencing
some premature session timeoffs... very weird.
Did anybody even configured WL 6.1 SP2 as the main webserver under a localdirector,
and faced the same problem? We are desperate here.
Thanks,
Rodrigo -
Redirect, Weblogic and Local Director... unfortunate combination.
Hi all,
We've been facing a very painfull problem in my company. Basically, it relates
to the fact that weblogic 'uselessly' makes a redirect to index.jsp everytime
somebody tries to reach our website.
The redirect itselve is bad, but when we have Local Director configured in front
of our farm, with stickness enabled, the damn think locks for 3+ seconds before
sending the also weird '0000' characters (that I suppose, indicate the page or
transaction was completed). This 0000 comes from Weblogic itself (we notice it
sends that even when we are not behind local director). We are also expiriencing
some premature session timeoffs... very weird.
Did anybody even configured WL 6.1 SP2 as the main webserver under a local director,
and faced the same problem? We are desperate here.
Thanks,
RodrigoOne other thing ... using URL with openConnection we found that we had to
end-pad the stream with two additional bytes (ignored) to get the full
message committed. Could be the same freaky thing.
Peace,
Cameron Purdy
Tangosol, Inc.
Clustering Weblogic? You're either using Coherence, or you should be!
Download a Tangosol Coherence eval today at http://www.tangosol.com/
"Rodrigo Rosa" <[email protected]> wrote in message
news:3c5f0dcb$[email protected]..
>
Hi all,
We've been facing a very painfull problem in my company. Basically, itrelates
to the fact that weblogic 'uselessly' makes a redirect to index.jspeverytime
somebody tries to reach our website.
The redirect itselve is bad, but when we have Local Director configured infront
of our farm, with stickness enabled, the damn think locks for 3+ secondsbefore
sending the also weird '0000' characters (that I suppose, indicate thepage or
transaction was completed). This 0000 comes from Weblogic itself (wenotice it
sends that even when we are not behind local director). We are alsoexpiriencing
some premature session timeoffs... very weird.
Did anybody even configured WL 6.1 SP2 as the main webserver under a localdirector,
and faced the same problem? We are desperate here.
Thanks,
Rodrigo -
Redirec from welcome-list and Local Director
Hi all,
We've been facing a very painfull problem in my company. Basically, it relates
to the fact that weblogic 'uselessly' makes a redirect to index.jsp everytime
somebody tries to reach our website.
The redirect itselve is bad, but when we have Local Director configured in front
of our farm, with stickness enabled, the damn think locks for 3+ seconds before
sending the also weird '0000' characters (that I suppose, indicate the page or
transaction was completed). This 0000 comes from Weblogic itself (we notice it
sends that even when we are not behind local director). We are also expiriencing
some premature session timeoffs... very weird.
Did anybody even configured WL 6.1 SP2 as the main webserver under a local director,
and faced the same problem? We are desperate here.
Thanks,
RodrigoOne other thing ... using URL with openConnection we found that we had to
end-pad the stream with two additional bytes (ignored) to get the full
message committed. Could be the same freaky thing.
Peace,
Cameron Purdy
Tangosol, Inc.
Clustering Weblogic? You're either using Coherence, or you should be!
Download a Tangosol Coherence eval today at http://www.tangosol.com/
"Rodrigo Rosa" <[email protected]> wrote in message
news:3c5f0dcb$[email protected]..
>
Hi all,
We've been facing a very painfull problem in my company. Basically, itrelates
to the fact that weblogic 'uselessly' makes a redirect to index.jspeverytime
somebody tries to reach our website.
The redirect itselve is bad, but when we have Local Director configured infront
of our farm, with stickness enabled, the damn think locks for 3+ secondsbefore
sending the also weird '0000' characters (that I suppose, indicate thepage or
transaction was completed). This 0000 comes from Weblogic itself (wenotice it
sends that even when we are not behind local director). We are alsoexpiriencing
some premature session timeoffs... very weird.
Did anybody even configured WL 6.1 SP2 as the main webserver under a localdirector,
and faced the same problem? We are desperate here.
Thanks,
Rodrigo -
CSS and Local Director comparison
I am new to this technology and I want to know what are advantages and disadvantages of Local director over the CSS and vice versa besides the price. What functionality does one has that is not supported by the other ?
If you are looking at implementing a load balancer then I would suggest to go for the CSS. The CSS is the next generation of load balancer and will replace the Local Director. The CSS functionality and extensibility is far greater than that of the local director. Another point is that feature developement is far more aggessive on the CSS.
Phil -
I am running BPDU guard on my switches. When I plug in my local director I the port is being shut down due to receiving a BPDU packet from that port. Does the Local Director run spanning tree? Does the local director generate BPDU's? If not, why is this happening?
The LD is a bridge but does not participate in spanning tree - it will pass BPDUs transparently. Try turning off portfast on ports connected to the LD.
Another option is a to use the command "set spantree portfast bpdu-filter enable". This command was introduced in 6.2.x code. -
Local Director 416 and IP Multicast
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Anyone ever see this and know of a solution?
Thanks!This is not expected behavior with the LD.
I did see one bug (CSCdw87752) regarding the LD duplicating multicast packets in 4.2.3. The scenario was slightly different. In the bug, the LD was duplicating multicast packets from a Checkpoint Firewall. That bug is fixed in version 4.2.4. I think it is likely that this fix will also fix your issue.
Let me know if that works or not...
-Steve -
Webutil and local printers / ports
Hi,
is there a way in Webutil to use local printers installed in Windows? I want to specify wich printer to use, and to write or spool to that printer (e.g. a bar-code printer).
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Thx
GaborGabor,
no there is no local printer support in webutil as far as I know. You can obtain a list of local printers through a Java Bean that you can write and add to the Forms client. The Java 2 development kit contains a print API that can be used to get the names of installed printers (make sure the bean file is signed)
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Fran -
Local Director SNMP for CPU and Memory
Is there any way to get the CPU and memory utilization from a Local Director using SNMP? When I do an SNMP walk, I don't see any objects for CPU and memory.
Thank youThere's a "Show cpu " commmand availabe. Type help or '?' for a list of available commands.
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Local Director http probes with URLs and http redirect mode
I am trying to configure http probes on my Local director 430 running 4.2.3
I am using http redirect mode so the Virtual is bound to URLs not REALs with are linked to DIPs which are bound to REALs. So far the probes seem to not actually do anything. Does anyone know if the probes are compatible with URL redirect loadbalancing. And if so how one would go about configuring it.
Thanks for your help.keepalive can be used for the probe notification in this case.
Check the following url for details.
http://www.cisco.com/univercd/cc/td/doc/product/webscale/css/bsccfggd/services.htm#xtocid727448 -
Local Director unable to detect a failed web site
Hi all,
I have configured the local director to load balance several web sites on two real servers. One of these sites is required to be configured in backup mode.
For some reason the local director is unable to detect the site has gone down (by stopping the site to update the web content), therefore not directing requests to the backup real server.
I am using IIS 5.0, since its quite popular out there, has anyone experienced a similar situation and if so, how did you resolve it?
thanksYour problem is based in the Operating system, not the Local Director. The LD is a layer 3 device. Microsoft put their application architecture together different from the Unix world, ie: Any ip address bound to a MS box is answered for by the OS - not the application (IIS in this case) If IIS is hosed up the OS will still answer for the IP you have bound to the NIC of the OS - the OS does not care at layer 3 that you want a higher level reply - LD does its availability checking at Layer 3 - the OS layer for MS. In the Unix world when an application is bound to a port - ie: Apache to port 80, then the apache deamon answers for that ip/port - not the OS - Apache panics and it will not respond at Layer 3 - the OS could be fine, but the LD will know that ip/port is not responding and will take the appropriate actions by your LD config.
Check out the httpprobe feature of the LD - it lets you test for a file in a URL inside the LD.
Cheers -
Local director binding to SSL port goes to TESTING automatically after some time..
This usually happens when the backend service is unavailable, and the LD tries to reassign a connection to it (to see if it has recovered).
* Can you post the output from 'show real'?
* What version of LD software are you running.
~Zach -
Hi!, I have a question: Is there any way using CISCO Local Director instead of WebLogic Clustering feature ? because that our production folks insist on using "hardware" solution. We us iPlanet Web server + WebLogic Application Server in our application. Very appreciate if anyone can answer my question.
Not yet. First, I do not believe that there is a hardware load balancer
that "understands" WL stickiness, especially WRT failover. Only WL's
plug-ins understand that, so right now you must use them.
I expect that WL will eventually be able to route a request to the "right"
server if it shows up at the "wrong" server, meaning that eventually each WL
instance in a cluster could be used as the front-end of the cluster, so a
hardware solution could work very well for non-session requests (where it
doesn't matter which WL instance gets the requests) and for session requests
(where it must go to the "right" server) it will re-route automatically.
Right now I suggest using NAS to front the cluster; it appears to be the
best solution. If you use a hardware load balancer, then a group of Apache
servers on Linux would be as good or better of a solution to front the
cluster (i.e. load balancer distributes to a set of Apache servers that are
working independently of each other).
Cameron Purdy
[email protected]
http://www.tangosol.com
WebLogic Consulting Available
"Bernie Wong" <[email protected]> wrote in message
news:[email protected]...
> Cameron,
>
> Can I use a hardware load balancer that respects stickiness and therefore
> not use WL-based HTTP balancing.
>
> "Cameron Purdy" <[email protected]> wrote in message
> news:[email protected]...
> > From what I have heard, you can use CISCO local director to spread out
> > incoming HTTP requests across a number of Apache or IIS or NAS servers,
> each
> > of which has the WL cluster feature. That really only makes sense
though
> if
> > you have too large an amount of web server requests (typically static
> files
> > like HTML, GIF, etc.). There is no way currently to remove the WL
cluster
> > feature that plugs into the web server. If the request goes to the
wrong
> WL
> > server, it won't get re-routed to the right WL server. There IS such a
> > thing as a "wrong" server because HTTP sessions are sticky. Following
the
> > must-use-hardware line of thought, though, you could theoretically have
10
> > identically configured boxes running Apache with the WL mod and also
have
> WL
> > on each box, then local director could hardware distribute to the 10
boxes
> > that would then software distribute to the same 10 boxes. In other
words,
> > each host in a 10-host WL cluster is also running Apache with the WL mod
> (or
> > one of the others).
> >
> > --
> >
> > Cameron Purdy
> > [email protected]
> > http://www.tangosol.com
> > WebLogic Consulting Available
> >
> >
> > "Think Lee" <[email protected]> wrote in message
> > news:[email protected]...
> > Hi!, I have a question: Is there any way using CISCO Local Director
> instead
> > of WebLogic Clustering feature ? because that our production folks
insist
> on
> > using "hardware" solution. We us iPlanet Web server + WebLogic
> Application
> > Server in our application. Very appreciate if anyone can answer my
> question.
> >
> >
>
>
-
Internet Based Clients and Native Mode
Hi guys,
I have a question.... We have SCCM 2007 SP2 running in mixed mode in the environment. Now we plan to support internet based clients. Here is the current Hierarchy in mixed mode.
1 Central Server
1 Primary Server
3 Secondary servers under above Primary Server
Now as the requirement is to support internet based clients and want them to support on office LAN as well when they come to the office....this is what I would be doing : ( Theoretically I know, I need the practical steps to achieve that )
1. Get all the 3 PKI Certificates : Site Server Signing, Web Server, Client agent.
2. Make sure all the required ports are opened in-between Intranet <->DMZ AND DMZ <-> Internet
3. Migrate Central server from Mixed to Native Mode.
4. Install another Primary Server on Intranet in Native mode.
5. Create a site system server connected to newly created Native Primary Site in the DMZ zone with these roles installed : MP, SUP and DP.
6. Re-install all the SCCM clients in the environment with the command-line so that they can be supported on both internet and intranet.
7. Make sure internet clients are able to connect DMZ site system server via internet.
Please let me know if I'm missing something here and let me know the practical steps to achieve this.
Request you not to share Microsoft technet link for the same. Please share some step-by-step practical document etc.. to achieve this.
Thanks,
Sam1. This is incorrect. You need more than a single web server cert and client cert. You need a unique server auth cert for *every* one of your systems hosting a client role like the MP, DP, and SUP. Also, you need a unique client auth cert for each and *every*
client that may/will connect via the Internet.
4. Standing up a whole extra site just to support IBCM is a bit overkill. It does allow you to keep your "main" primary site in mixed mode, but it does add some overhead and cost and is not technically necessary.
6. Incorrect. You only need to reinstall clients that will be configured as "Internet-only". Intranet clients should pick up the internet facing roles via policy. You can verify this by checking locationservices.log on the clients after they are successfully
communicating and the Internet facing roles are stood up and healthy.
You've made no account above for the CDP or CRL checking. This is a major stumbling block for many folks.
Jason | http://blog.configmgrftw.com -
E1200 - Ports not working and mac filtering problem
If there was a way to give negative stars to this router, I would. As it is, the minimum rating I can give this product is one star, and that's one star too many.
I was upgrading from the WRT54G, which is an ugly thing to look at, but a reliable workhorse nonetheless. I turned that in to a downstream switch in my comms hub.
On the E1200, I flashed the latest firmware, used different Cat5 cables, and different laptops before committing to hating this product.
The first time I reached out to Amazon, the Amazon rep gave me a Cisco number to call. Turns out, that's some shady mortgage refinance hotline. Try it for yourself! 1-800-666-1771.
Now, the rant -
1. Two out of four wired LAN ports don't work: What can be the fix for this?! The activity lights on ports 3 and 4 blink and suggest data transfer is taking place, but the wired laptop simply can't acquire an IP address and access the internet. Same result when I connect my Panasonic Blu-Ray player to ports 3 and 4. None of the Viera Cast features load.
2. MAC filtering unreliable: The wireless routing works somewhat reliably, if and only if, one settles for the most basic security. If I only choose a password and WPA2 protocol, things work fine. If I add another layer of security (in my case, enabling MAC filtering and only PERMITTING gateway to listed MAC IDs), things break down. As soon as I disable MAC filtering, wireless access to authenticated clients is restored.
3. Cisco customer service: The censored world we live in, compels me to criticize politely. TERRIBLE. Cisco website is unintuitive, and frustrating. There's no easy way to register your purchased product. The Cisco "registration" is intentionally misleading and deceptive. For all intents and purposes, it's just an information gathering tool for Cisco. Don't bother registering there, unless you love the idea of storing your personal information on their servers. Their phone-based customer service is apathetic and uninterested. My rep was so distrusting of my intelligence and motor control, that he simply wouldn't believe that I had selected "PERMIT" and not "PREVENT" as the option under MAC filtering. After he asked me the same question for the fourth time, I raised my voice, and he gave up the idea of checking for the fifth time.
However, this review is a tale of two companies. I reached out to Amazon again. This time, I got a rockstar in the shape of Leanne C! She was incredibly helpful, and understanding. What's more, she set up my return without any hassle and this Cisco dud is on its way back. I'm a big fan of Leanne's and my confidence in Amazon is restored.
I'm sure that i received a lemon. I've never had problems with Linksys products. Maybe others' experience is different from mine.In your case as port numbers 1 and 2 does not work, what you could have done a loop back test. To perform a loop back test you need to take an ethernet cable, connect one end of that cable to internet port and the other end to the non-working port on the router. If you get the led to glow on both internet and the respective ethernet port that indicates that the port is working fine.
It could also be a sychronization issue between the above mentioned lan ports and the lan card of your computer. As a part of trouble shooting you can try to reduce the card speed of your lan card. Following are the steps to reduce the speed of your lan card.
START--> right-click My Network Places and click Properties
right-click on the device manager and click properties
Click on the CONFIGURE button
Select the ADVANCED tab and in the box under the header property select "speed and duplex" and change the value on the right to 10 mbps half duplex. A restart would be recommended after performing these steps.
In the second half you said that after enabling the mac filter option the internet breaks down. Here, do you mean to say that the computer
gets disconnected from the wireless network or it stays connected with a valid IP address but without an internet connection.
Well, it is an unusual issue however you could have reset and reconfigure the router as you got the latest firmware upgraded on it.
Steps to reset the router:
Push the reset button on router for 30 seconds, turn off the router wait for 30 seconds and then power it on. Power light should blink when you perform the reset process.
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