Data flow using a WLAN controller

Can someone explain the flow of data from wireless client to some destination in the internal network (or the Internet) using a WLAN Controller? Use a 4402 as an example.
Specifically, I am wondering if client traffic actually passes thru the WLAN Controller (4402). I am reading the configuration guide and it doesn't seem to be explicitly stated one way or the other.

Hi Ken,
This is a very common question these days.
Here is a recent thread as well as an excerpt from a good doc:
http://forum.cisco.com/eforum/servlet/NetProf?page=netprof&forum=Wireless%20-%20Mobility&topic=Getting%20Started%20with%20Wireless&CommCmd=MB%3Fcmd%3Ddisplay_location%26location%3D.1ddaca5d
In the Cisco Centralized WLAN architecture, LWAPP-enabled access points operate in the lightweight mode (as opposed to the autonomous mode). The access points associate to a Cisco WLAN controller. The controller manages the configuration, firmware, and control transactions such as 802.1x authentication. In addition, all wireless traffic is tunneled through the controller.
LWAPP is an IETF draft protocol that defines the control messaging for setup and path authentication and run-time operations. LWAPP also defines the tunneling mechanism for data traffic.
In an LWAPP environment, a Cisco Aironet LWAPP-enabled access point discovers a controller by using LWAPP discovery mechanisms and then sends it an LWAPP join request. The controller sends the access point an LWAPP join response allowing the access point to join the controller. When the access point is joined, the controller downloads its software if the versions on the access point and controller do not match.
LWAPP secures the control communication between the access point and controller by means of a secure key distribution, utilizing X.509 certificates on both the access point and controller.
From this doc:
http://www.cisco.com/en/US/products/hw/wireless/ps430/products_quick_start09186a00805100f5.html#wp47092
Hope this helps!
Rob
Please remember to rate helpful posts.........

Similar Messages

DS 4.2 get ECC CDHDR deltas in ABAP data flow using last run log table

I have a DS 4.2 batch job where I'm trying to get ECC CDHDR deltas inside an ABAP data flow. My SQL Server log table has an ECC CDHDR last_run_date_time (e.g. '6/6/2014 10:10:00') where I select it at the start of the DS 4.2 batch job run and then update it to the last run date/time at the end of the DS 4.2 batch job run.
The problem is that CDHDR has the date (UDATE) and time (UTIME) in separate fields and inside an ABAP data flow there are limited DS functions. For example, outside of the ABAP data flow I could use the DS function concat_date_time for UDATE and UTIME so that I could have a where clause of 'concat
_date_time(UDATE, UTIME) > last_run_date_time and concat_date_time(UDATE, UTIME) <= current_run_date_time'. However, inside the ABAP data flow the DS function concat_date_time is not available. Is there some way to concatenate UDATE + UTIME inside an ABAP data flow?
Any help is appreciated.
Thanks,
Brad

Michael,
I'm trying to concatenate date and time and here's my ABAP data flow where clause:
CDHDR.OBJECTCLAS in ('DEBI', 'KRED', 'MATERIAL')
and ((CDHDR.UDATE || ' ' || CDHDR.UTIME) > $CDHDR_Last_Run_Date_Time)
and ((CDHDR.UDATE || ' ' || CDHDR.UTIME) <= $Run_Date_Time)
Here are DS print statements showing my global variable values:
$Run_Date_Time is 2014.06.09 14:14:35
$CDHDR_Last_Run_Date_Time is 1900.01.01 00:00:01
The issue is I just created a CDHDR record with a UDATE of '06/09/2014' and UTIME of '10:48:27' and it's not being pulled in the ABAP data flow. Here's selected contents of the generated ABAP file (*.aba):
PARAMETER $PARAM1 TYPE D.
PARAMETER $PARAM2 TYPE D.
concatenate CDHDR-UDATE ' ' into ALTMP1.
concatenate ALTMP1 CDHDR-UTIME into ALTMP2.
concatenate CDHDR-UDATE ' ' into ALTMP3.
concatenate ALTMP3 CDHDR-UTIME into ALTMP4.
IF ( ( ALTMP4 <= $PARAM2 )
AND ( ALTMP2 > $PARAM1 ) ).
So $PARAM1 corresponds to $CDHDR_Last_Run_Date_Time ('1900.01.01 00:00:01') and $PARAM2 corresponds to $Run_Date_Time ('2014.06.09 14:14:35'). But from my understanding ABAP data type D is for date only (YYYYMMDD) and doesn't include time, so is my time somehow being defaulted to '00:00:00' when it gets to DS? I ask this as a CDHDR record I created on 6/6 wasn't pulled during my 6/6 testing but this 6/6 CDHDR record was pulled today.
I can get last_run_date_time and current_run_date_time into separate date and time fields but I'm not sure how to build the where clause using separate date and time fields. Do you have any recommendations or is there a better way for me to pull CDHDR deltas in an ABAP data flow using something different than a last run log table?
Thanks,
Brad

WAP4410N Access point and 4404 WLAN Controller.

Hello to all,
I am planning to setup a new WLAN using WAP4410N Wireless N Access Point. Is it possible to manage the AP using 4404 WLAN controller ?
I need to buy arround 42 AP for covering the entire building.
Regards,
Aslam

leolaohoo
Could u please tell me which series can be used with 4404 WLANC ?
Also the AP Should support Bridging or Mesh.

Wlan Controller Hotspot Solution

Hi,
We are using cisco wlan controller for our wireless network. By the way we need guest internet access for our guests. Can we make a hotspot solution with only our controller? I mean the user will join the guest network and then a web page opens then user enters the credentials. Then he can use the internet.
Thanks.

Its better to use different Vlans:
The LAP is registered to the WLC. The WLC is connected to the Layer 2 switch. The router that connects the users to the WAN also connects to the Layer 2 switch. You need to create two WLANs, one for the guest users and the other for the internal LAN users. You also need a DHCP server to provide IP addresses for the guest and internal wireless clients. The guest users use web authentication in order to access the network. The internal users use EAP authentication. The 2811 router also acts as the DHCP server for the wireless clients.
Note: This document assumes that the WLC is configured with the basic parameters and the LAP is registered to the WLC. Refer to Lightweight AP (LAP) Registration to a Wireless LAN Controller (WLC) for information on how to configure the basic parameters on a WLC and how to register the LAP to WLC.
When configured as a DHCP server, some of the firewalls do not support DHCP requests from a relay agent. The WLC is a relay agent for the client. The firewall configured as a DHCP server ignores these requests. Clients must be directly connected to the firewall and cannot send requests through another relay agent or router. The firewall can work as a simple DHCP server for internal hosts that are directly connected to it. This allows the firewall to maintain its table based on the MAC addresses that are directly connected and that it can see. This is why an attempt to assign addresses from a DHCP relay are not available and the packets are discarded. PIX Firewall has this limitation.

Using asynchronous timer for data flow control

Hi all,
I am using system sleep to control the data flow (some digital lines and analog output). The pseudo code is something like this
Sleep(150);
// the following sections are exectuted in parallel
#pragma omp parallel sections
    #pragma omp section
      DAQmxWriteDigitalLines(...); // output TTL to one digitla line
    #pragma omp section
      DAQmxWriteDigitalLines(...); // output TTL to another digitla line
    #pragma omp section
      Sleep(2); // sleep 2ms
// the following sections are exectuted in parallel
#pragma omp parallel sections
    #pragma omp section
      DAQmxWriteDigitalLines(...); // output TTL to one digitla line
    #pragma omp section
      DAQmxWriteAnalogScalarF64(...); // analog output to one channel
    #pragma omp section
      Sleep(1); // delay 1ms
// the following sections are exectuted in parallel
#pragma omp parallel sections
    #pragma omp section
      DAQmxWriteDigitalLines(...); // output TTL to one digitla line
    #pragma omp section
      DAQmxWriteAnalogScalarF64(...); // analog output to one channel
#pragma omp section
      DAQmxWriteAnalogScalarF64(...); // analog output to another channel
    #pragma omp section
      Sleep(11); // delay 11ms
// ... other stuffs
I am running windows XP and I know it is not possible to get realtime control but I want a as precise timing as possible. Above code is not perfect but it works 95% of times. I just read an article about using the asynchronous timer to control the time delay. I try that idea with the following code frame
int CVICALLBACK ATCallback(int reserved, int timerId, int event, void *callbackData, int eventData1, int eventData2)
if (event==EVENT_TIMER_TICK)
int *nextdelay = (int *)callbackData;
SuspendAsyncTimerCallbacks();
if (timerId>=0)
double time;
if (*nextdelay==0) time=2.0;
else if (*nextdelay==1) time=1.0;
else time=12.0;
SetAsyncTimerAttribute(timerId, ASYNC_ATTR_INTERVAL, time);
if (*nextdelay==0)
#pragma omp parallel sections
#pragma omp section
DAQmxWriteDigitalLines(...); // output TTL to one digitla line
#pragma omp section
DAQmxWriteDigitalLines(...); // output TTL to another digitla line
*nextdelay++;
else if (*nextdelay==2)
#pragma omp parallel sections
#pragma omp section
DAQmxWriteDigitalLines(...); // output TTL to one digitla line
#pragma omp section
DAQmxWriteAnalogScalarF64(...); // analog output to one channel
*nextdelay++;
else if (*nextdelay==3)
#pragma omp parallel sections
#pragma omp section
DAQmxWriteDigitalLines(...); // output TTL to one digitla line
#pragma omp section
DAQmxWriteAnalogScalarF64(...); // analog output to one channel
#pragma omp section
DAQmxWriteAnalogScalarF64(...); // analog output to another channel
*nextdelay++;
ResumeAsyncTimerCallbacks();
return 0;
void main(void)
int n = 0;
int timeid;
timeid = NewAsyncTimer(120.0/1000.0, 3, 1, ATCallback, &n);
But it doesn't work. There is no compilation and runtime error but the timing just not right. I wonder do I have to suspend the timer in the callback function when I reset the delay for next call? If I do so, I am worry if it will apply too much delay (since I suspend and resume the timer in the delay) so it will cause even worse timing. But if I don't suspend the timer before I reset the time, what happen if the code running in the callback function not finished before the next callback arrive. It is quite confusing how to use asynchronous timer in this case. Thanks.

Yeah, unfortunately the 6711 doesn't have clocked digital I/O. There are only two counters anyway so even if you could use them to generate your signals you wouldn't have enough (*maybe* something with the 4 AO channels and a counter depending on what your output signals need to look like? The AO channels can output "digital" as well if you write 0V or 5V only).
A PCI DAQ card which does support clocked digital I/O and has 2 analog outputs is the 6221 (or if you could use PCIe the 6321 is a more updated version with two extra counters and some additional functionality).
If there isn't a way to implement clocked outputs afterall, one thing you could do to make your code a little more efficient is to consolidate the writes. You can put your digital lines into a single task and write them at ocne, and you can put your analog channels into a single task and write them at once as well.
I'm not sure about the callback issue, you might find some more help in the CVI forum. I don't think it's going to solve your underlying problem though as ultimately the execution timing of your software calls is at the mercy of your OS.
Best Regards,
John Passiak

SQL Query using a Variable in Data Flow Task

I have a Data Flow task that I created. THe source query is in this file "LPSreason.sql" and is stored in a shared drive such as
\\servername\scripts\LPSreason.sql
How can I use this .sql file as a SOURCE in my Data Flow task? I guess I can use SQL Command as Access Mode. But not sure how to do that?

Hi Desigal59,
You can use a Flat File Source adapter to get the query statement from the .sql file. When creating the Flat File Connection Manager, set the Row delimiter to a character that won’t be in the SQL statement such as “Vertical Bar {|}”. In this way, the Flat
File Source outputs only one row with one column. If necessary, you can set the data type of the column from DT_STR to DT_TEXT so that the Flat File Source can handle SQL statement which has more than 8000 characters.
After that, connect the Flat File Source to a Recordset Destination, so that we store the column to a SSIS object variable (supposing the variable name is varQuery).
In the Control Flow, we can use one of the following two methods to pass the value of the Object type variable varQuery to a String type variable QueryStr which can be used in an OLE DB Source directly.
Method 1: via Script Task
Add a Script Task under the Data Flow Task and connect them.
Add User::varQuery as ReadOnlyVariables, User::QueryStr as ReadWriteVariables
Edit the script as follows:
public void Main()
// TODO: Add your code here
System.Data.OleDb.OleDbDataAdapter da = new System.Data.OleDb.OleDbDataAdapter();
DataTable dt = new DataTable();
da.Fill(dt, Dts.Variables["User::varQuery"].Value);
Dts.Variables["QueryStr2"].Value = dt.Rows[0].ItemArray[0];
Dts.TaskResult = (int)ScriptResults.Success;
4. Add another Data Folw Task under the Script Task, and join them. In the Data Flow Task, add an OLE DB Source, set its Data access mode to “SQL command from variable”, and select the variable User::QueryStr.
Method 2: via Foreach Loop Container
Add a Foreach Loop Container under the Data Flow Task, and join them.
Set the enumerator of the Foreach Loop Container to Foreach ADO Enumerator, and select the ADO object source variable as User::varQuery.
In the Variable Mappings tab, map the collection value of the Script Task to User::QueryStr, and Index to 0.
Inside the Foreach Loop Container, add a Data Flow Task like step 4 in method 1.
Regards,
Mike Yin
TechNet Community Support

SSIS Data Flow task using SharePoint List Adapter Setting SiteUrl won't work with an expression

Hi,
I'm trying to populate the SiteUrl from a variable that has been set based on a query to a SQL table that has a URL field. Here are the steps I've taken and the result.
Created a table with a url in it to reference a SharePoint Task List.
Created a Execute SQL Task to grab the url putting the result set in a variable called SharePointUrl
Created a For Each container and within the collection I use the SharePointUrl as the ADO object source variable and select rows in the first table.
Still in the For Each container within the Variable mappings I have another Package Variable called PassSiteUrl2 and I set that to Index 0 or the value of the result set.
I created a script task to then display the PassSiteUrl2 variable and it works great I see my url
This is where it starts to suck eggs!!!!
I insert a Data Flow Task into my foreach loop.
I Insert a SharePoint List Adapter into my Data Flow
Within my SharePoint List Adapter I set my list to be "Tasks", My list view to be "All Tasks" and then I set the url to be another SharePoint site that has a task list just so there is some default value to start with.
Now within my Data Flow I create an expression and set the [SharePoint List Source].[SiteUrl] equal to my variable @[User::PassSiteUrl2].
I save everything and run my SSIS package and it overlays the default [SharePoint List Source].[SiteUrl] with blanks in the SharePoint List Adapter then throws the error that its missing a url
So here is my question. Why if my package variable displays fine in my Control Flow is it now not seen or seen as blanks in the Data Flow Expression. Anyone have any ideas???
Thanks
Donald R. Landry

Thanks Arthur,
The scope of the variable is at a package level and when I check to see if it can be moved Package level is the highest level. The evaluateasexpression property is set to True. Any other ideas?
I also tried to do the following. Take the variable that has the URL in it and just assign it to the description of the data flow task to see if it would show up there (the idea being the value of my @[User::PassSiteUrl] should just show in the
description field when the package is run. That also shows up blank.
So i'm thinking its my expression. All I do in the expression is set [SharePoint List Source].[SiteUrl] equal to @[User::PassSiteUrl] by dragging and dropping the variable into the expression box. Maybe the expression should be something
else or is their a way to say @[User::PassSiteUrl] = Dts.Variables("User::PassSiteUrl2").Value.ToString()
In my script task I use Dts.Variables("User::PassSiteUrl2").Value.ToString() to display
the value in the message box and that works fine.
Donald R. Landry

Help Required Regarding - SAP Job names using R3 data flows

We are calling a set of SAP Jobs using R3 data flows in data services. When ever a job fails we first kill the active SAP jobs by logging into SAP and then restarting the Jobs.
There are about 100 odd SAP jobs that we call using these Data services Jobs so we wanted to kill the jobs using a reusable code on the SAP side by passing the Job name just before every R3 flows just incase its still in active status.
So wanted to know if there are any short cuts to retrive the set of associated SAP job names because it will be a tedious process to hardcode the SAP job names and pass them as parameters for all the 100 + SAP job names in the custom defined resuable code.
Any help or advice on this please !!

The program is not meeting the expectations
and the problem is due to reflection.Do we know this for certain?
... my application gets the class name, field name
etc. from an XML file so i don't know their method names
beforehand .
Now since every class instance corresponds to a row
in the database and i have to call get and set
methods of each class instance so the performance
keeps on degrading as the number of columns and rows increase .
Can somebody suggest some improvement regarding this
and regarding creating multiple instances of the same object Class.forName() will be using a hash already, so there is probably not much room for improvement.
Class.newInstance() probably does not take significantly more processing than a simple "new Fubar();".
Umpteen reflective method invokations (one per column) for each row/instance - Are you saying these are the problem?
You can test this easy enough.
If you comment out the reflective method invocations and leave the rest of your code untouched,
does your application processing speed up significantly?

Using ABAP DATA FLOW to pull data from APO tables

I am trying to use an ABAP Data flow to pull data from APO and receive error 150301. I can do a direct table pull and receive no error, but when I try to put it in an ABAP data data flow I get the issue. Any help would be great.

Hi
I know you "closed" this, however someone else might read it so I'll add that when you use an ABAP dataflow, logic can be pushed to ECC - table joins, filters, etc. (Which can be seen in the generated ABAP).
Michael

Use of Data Flow in the Action Box

Hi Guys
Can any body explain the use of Data Flow in the action box?
If anybody have the doc. mail to [email protected]
It would be more useful if anybody expalin it with an example?
Thanks

Hi,
Thanks
know i want to confi. the following scenario
that is
I have to raise the ECC delivery from CRM through CIC0. After that it has to come in to the Application Area.
In such way that when i choose the ECC delivery, it has to display the list of ECC delivers that have already delivered.
Can you help me out how to go ahead?
know i am able to call the ecc delivery and save it.
Thanks

I need to bridge a printer off a wireless bridge using a 4402 WLAN Controller

I need to bridge a printer off a wireless bridge using a 4402 WLAN Controller. Would I need to make any changes on the 4402 WLAN Controller?

One options is to take a cisco autonmous access point and configure it as a WGB. And no, you would not have to do anything special to the WLC in thay deisgn. The WGB would act as a wireless client.
Make sense?

Creatimg Data Flow Diagrams using applets

i am using java applets to make an application for Data Flow Diagrams. how to provide for validations for rules for the same and to have multiple level of windowa for it.

nsh11 wrote:
Sorry, i am new to forums.sun.com. Please tell form where to search for creating data flow diagrams using applets.That is too specific a question. If you want help on DFDs, [search on DFDs|http://www.google.com/search?q=Data+Flow+Diagrams]. If you want help with custom rendering, search on [custom rendering Java Tutorial|http://www.google.com/search?q=custom+rendering+Java+tutorial] . If you want help with applets, search on [applets Java Tutorial|http://www.google.com/search?q=applets+Java+tutorial] . If you have any specific questions how to make your DFD work and render in an applet, ask a (much more) specific question.
But to be honest, if you cannot frame a more specific question after researching those links, I would recommend you look to a career in some field other than programming.
Edit 1:
Hit 'enter' too early.
Edited by: AndrewThompson64 on Feb 11, 2010 11:23 PM

Which data flow source type to use when specifying a connection manager using an ODBC provider

I'm trying to create a SSIS package to connect to an IBM iSeries DB2 database. After running into all sorts of issues seemingly related to data type (issues with packed decimal fields actually having places to the right of the decimal) I decided to
try creating an ODBC data source on my windows server 2008 r2 Administrative Tools - Data Sources ODBC to connect to the iSeries and then create an SSIS connection manager to use the windows ODBC connection. Successfully created the ODBC connection in
windows then successfully added a SSIS connection manger to my project using the windows ODBC connection and tested the connection manager successfully. To create the connection manager I RMB in the connection manager section - select new connection
- select ODBC - select the newly created ODBC connection from the list and operate the ok button. Edited the connection manager specified the userid and pw and connected succcessfully.
Problem is I don't seem to be able to find a Data Flow Source in the SSIS tool box that will let me specify the connection manager using the ODBC connection. The Data Flow Sources in my tool box are "Pointer", "ADO NET Source",
"Excel Source", "Flat File Source", "OLE DB Source", "Raw File Source" and "XML Source".
Can someone kindly show me what Data Flow Source I should be using and how to specify my SSIS connection manager that uses the windows ODBC connection?
Thanks Much in advance for any help, Roscoe

This would help you
http://social.msdn.microsoft.com/Forums/en-US/c688b646-28bb-44b9-b53b-fddf23e15189/how-to-connect-to-odbc-using-ssis?forum=sqlintegrationservices
Abhinav http://bishtabhinav.wordpress.com/

WLAN controller 4400 series, use service-port for initial configuration, IP address?

Hi, Everyone,
I just got a new Cisco Wlan controller 4402 from somebody else but I can't find a suitable console cable( DB-9 console on the controller) , I googled everywhere and I read I could use service port to do the initial configuration, the CISCO FAQ says initial IP for service port is 192.168.1.1, I tried use Cross-over cable to connect a PC to the service port directly and use a normal cable with a switch to connect the service port and a PC, both of the connections do not work out: from the PC, I can't ping 192.168.1.1 ( PC IP changed to 192.168.1.20) , nor can I go http://192.168.1.1 . The service port Link is solid GREEN and ACT is solid GREEN, the PC NIC says Connected with 100 Mbps , so I'm wondering the IP address of service port is not 192.168.1.1? Please help.
Any sussgestions and advices are greatly appreciated.

Hi,
plz connect service port to the switch port that should be configured as access.
connect a pc (ip address - as u mentioned) to the other port of the switch. both wlc and pc should be in same vlan (create a temperary vlan).
try https to access the wlc.
Thanks

Why do we want use 'Data Flow Task' to 'Data Flow Tast' in Control Flow?

I found an example in my company's SSIS package folders. In Control Flow, it has one data flow connected to the other. Both of them are importing data from flat file and then exported to database. I think these two are kind of at the same level and cannot
see any reasons to conncect them together.
Thanks & Happy Thxgiving,
Gavin

Hi Gavin,
Just as Arthur said, if there is no relationship between those two data flow tasks, we don’t have to connect them together. If they connect together, maybe there are some relationship between them.
According to your description, both of the data flow tasks are importing data from flat file and then exported to database. It seems that there is no direct relationship between them. Another possibility is that there is a precedence constraint between them.
The precedence constraint can be based on a combination of the first execution results and the evaluation of expressions. We can check the issue by double-check the connection string between them.
The following screenshot is for your reference:
If there are any other questions, please feel free to ask.
Thanks,
Katherine Xiong
Katherine Xiong
TechNet Community Support

Data flow using a WLAN controller

Similar Messages

Maybe you are looking for