Why is my bandwidth limited in direct mode?

I have 150 Mbps internet service. I am only seeing 20Mbps on my Air using Airport Express. I have two, they both have the same result.
If I connect the Air to the modem (in bridge mode) directly through thunderbolt to ethernet, I get 150 Mbps, with either ethernet wire.
If I connect the Air to the Airport Express directly through the same wire, and the Express connected to the modem in bridge mode, I get 20Mbps. Note that I did a hard reset, so the router should not be performing any functions. In this mode, the Airport Express does not show up in AirPort Utility as expected.
How is it possible the Airport would be reducing the bandwidth to such a low level? I'm taking the modem back tomorrow, I'm wondering if it's going into some odd handshaking mode.
Just FYI, Wifi in 2.4G and 5G result in same 20Mbps. I've verified the Air is in 802.11n mode.
Thanks!

I thought 802.11n was up to 300Mbps?
"up to" means exactly that.....the product can operate anywhere up to 300 Mbps.
But, "up to", does not mean that it will operate at 300 Mbps.
Your actual wireless connection link is determined by a number of different factors. Some of these, like interference, are beyond your control.
But, for the sake of argument......let's say that the AirPort Express is operating at 270 Mbps. That 270 Mbps will get choked down to 100 Mbps when it reaches the 100 Mbps port on the AirPort Express. You have now lost 2/3 of the speed on the network.

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hi all
why there is a bandwidth limitations in serial ports ??
like the highest one is 45 mbps
but Ethernet ports reach 100 GB !!
thanks,

Dear,
each standard has its own specification about media, connectors and protocols. Depending on the type of media and technologies that ware available when the standard has been defined, a maximum speed has also been defined. The speed depends on the specific media (copper or optical, twisted pair or coax, cat 5 or cat 6), electrical signals (volts, waveform, clock), distance between device,.... each protocol defines a maximum speed. It's true that ethernet protocols have a very high speed but over a copper line they are also limited to 100 meters while other serial protocols, xDSL for example, can transmit up to 20Mbps over copper line over a distance of some kilometre. So speed reduction is often a way to have longer connections.
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enrico
PS: please rate if useful

Bandwidth limiting with 2504 WLR and 3602E AP

Hello,
My QA team needs to test number of special connectivity scenarios where their wireless connection has a limited bandwidth.
Ideally, I would like to provide them number of SSIDs each of which has different bandwidth limitation.
But so far I did not find a way to apply any bandwidth limitations to my 2504 Wireless controller and the 3602E AP.
QoS has only 4 pre-defined modes which can't be set to a specific limit...
Any help/advise would be highly appreciated!
Thank you,
Mark.

Didnt realize this was not on the 5508, +5 Scott.
I guess the next best option is to ACL/QOS on the wired side for that subnet in question.
"Satisfaction does not come from knowing the solution, it comes from knowing why." - Rosalind Franklin
‎"I'm in a serious relationship with my Wi-Fi. You could say we have a connection."

Direct mode crashes at app start in some Android 4 devices

I've noticed that compiling an APK with <renderMode>direct</renderMode> in the app descriptor (or Processing Mode: "Direct" in AIR for Android settings in Flash Pro CS6), results in the app not working at all in some devices.
In a Samsung Galaxy Tab 2 it works fine in Direct Mode, but in two tablets named NVSBL Dragon and Yarvik GoTab Zetta TAB466EUK, it doesn't. All of them have Android 4. After you press the app icon, the screen goes black for 5 seconds, then you get back to the desktop with no error message. This happens every time you press the app icon. I've tried with AIR 3.2 and 3.3 and it always does the same. If the app is in CPU or GPU mode, this doesn't happen.
BTW, I know "Direct" mode is needed for Stage3D, but other than that, I don't really know what's this mode doing. Please, can someone really explain what's "Direct" mode? (so I can begin to understand why it doesn't work in some devices).

dan at ctrlbreak dot net wrote:
It would be somewhat acceptable if Air fell back to software rendering in this case instead of crashing all together. At least we'd have the option of getting better performance on supported devices in the future. My company is trying to decide if the latest Adobe technology is worth while. So far the choice is between an Air for Android App which would trigger a massive CS6 upgrade for a whole department, and making do with older Flash technology in a native webview.
You don't actually need CS6 to use the latest version of Adobe AIR. You can even skip Flash Pro altogether (except maybe for assets) and use, for example, FDT, which has a free version.
dan at ctrlbreak dot net wrote:
Update: I was able to get logcat working using ADB from the command line. Unfortunately only one of the devices I'm currently testing is rooted, and able to do this.
As far as I know, you don't need root to get ADB traces. I've been able to get traces from devices which weren't rooted.
BTW, a developer contacted me and says the "Deferred" just means the fix wasn't ready for AIR 3.3 and it was deferred to the next version. Let's hope they fix it this time.
Everybody which is having this bug, please vote in BugBase, since it's the thing that makes the AIR developer team care about fixing the bug. The more people the better:
https://bugbase.adobe.com/index.cfm?event=bug&id=3207310
And while you're at it, please vote this one as well
https://bugbase.adobe.com/index.cfm?event=bug&id=3207310
That's another bug which also happens only in Android 4, and involves crashes as well, this time when playing video.

AD PasswordSync - Direct mode workflow setup

Is there any information out there pertaining to setting up passwordSync in AD with IDM that goes into detail of how the process flows through each component? I'm looking for a more detailed explaination of IDM to gateway to AD to passSync back to IDM. Specifically:
- When passSync send the password back to IDM in direct mode, does IDM send it back to the AD resource? Why or Why not?
- If a load-balancer is in front of 2 gateways, what adverse effects will it have on IDM and AD? Why?
Thanks,
~idmNewbie
Edited by: rlewkowski on Mar 24, 2009 12:11 PM

- When passSync send the password back to IDM in direct mode, does IDM send it back to the AD resource? Why or Why not?
Answer : NO, this is default behavior of pass sync workflow
- If a load-balancer is in front of 2 gateways, what adverse effects will it have on IDM and AD? Why?
Answer : Gateways are not involved in Pass Sync Process itself, only if you have resources OTHER than AD, which are being managed via gateway.
BY the way - gateways can not work in active-active mode, this is not supported architecture. (only failover mode Active - Passive)

PasswordSync -direct mode normalize Exception

Hey, I am getting this strange exception while resetting AD user's password.
Does anyone seen this before?
Environment Info:
Sun Identity Management 8.1
Active Directory 2008 64-bit.
User's resourceAccountId=CN=Xx Yy,OU=OU ou1,OU=OU ou2,OU=OU ou3,OU=OU ou4,OU ou5,DC=lab,DC=net,DC=il
http-80-2(0x0162e703) RFC2253Parser#normalize() Catch com.sun.idm.util.ldap.InvalidDnException: Invalid character found in sequence starting at position 0
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 at com.waveset.rpc.GenericMessageHandler.findSourceResource(GenericMessageHandler.java:3385)
 at com.waveset.rpc.GenericMessageHandler.syncUserPassword(GenericMessageHandler.java:2496)
 at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
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 at java.lang.reflect.Method.invoke(Unknown Source)
 at com.waveset.rpc.GenericMessageHandler.request(GenericMessageHandler.java:367)
 at com.waveset.rpc.DirectPasswordSync.doPasswordSync(DirectPasswordSync.java:75)
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 at javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
 at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)
 at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
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 at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:128)
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- When passSync send the password back to IDM in direct mode, does IDM send it back to the AD resource? Why or Why not?
Answer : NO, this is default behavior of pass sync workflow
- If a load-balancer is in front of 2 gateways, what adverse effects will it have on IDM and AD? Why?
Answer : Gateways are not involved in Pass Sync Process itself, only if you have resources OTHER than AD, which are being managed via gateway.
BY the way - gateways can not work in active-active mode, this is not supported architecture. (only failover mode Active - Passive)

JBoss + OMQ (DIRECT Mode) + HTTP (service)

Is it possible to use OMQ in DIRECT mode (BrokerType=DIRECT) as a resource adapter in JBoss accepting HTTP connections by imqhttp/tunnel servlet?
It only worked when broker type was set to REMOTE.
Is the property ConnectionURL disconsidered when mode is different from REMOTE? Why?
Thanks,
Leandro.

Is it possible to use OMQ in DIRECT mode (BrokerType=DIRECT) as a resource adapter in JBoss accepting HTTP connections by imqhttp/tunnel servlet?
It only worked when broker type was set to REMOTE.
Is the property ConnectionURL disconsidered when mode is different from REMOTE? Why?
Thanks,
Leandro.

Question regarding NAT and directed-mode

Hello,
I have two WAE 574 devices and a CM 274 all running code level 4.3.1.6, The CM is behind a PIX firewall. There is no firewall between the branch and core WAE. The branch device is behind a NAT router. The CM and SSL ASA rea behind a PIX 515 firewall. The branch WAE is running inline mode and the core WAE is using WCCP redirection. Both the CM and SSL ASA are reverse NATted on the PIX firewall. The branch WAE has the primary interface unchecked on the CM and is using the NAT address.
I am getting asymmetric route issues. This is because for some reason the NAT address of the branch WAE sends the SYN which is responded to but the ACK is coming from the unnatted private address. When I turn off directed mode I can see optimisation start for some sessions but not for the SSL
ASA.
Example
Branch WAE Private 192.68.1.45
Branch WAE Public 206.99.88.10
CM private 192.168.20.9
CM public 240.10.10.20
PIX log
an 15 2012 11:50:58: %PIX-6-106015: Deny TCP (no connection) from 192.68.1.45/46871 to 240.10.10.20/443 flags PSH ACK on interfe
Although the PIX NATs the CM address, the core WAE is still still seeing it's private address.
Do you have any idea what could be causing this ?
Best regards
Stephen
Jan 15 2012 11:51:12: %PIX-5-106100: access-list DMZ_access_in denied tcp DMZ/192.168.20.9(443) -> outside/206.99.88.10(46871) hit-cnt 1 f]
Jan 15 2012 11:51:31: %PIX-6-106015: Deny TCP (no connection) from 192.68.1.45/46871 to 240.10.10.20/443 flags PSH ACK on interfe
Jan 15 2012 11:51:37: %PIX-6-106015: Deny TCP (no connection) from 192.68.1.45/46847 to 240.10.10.20/443 flags PSH ACK on interfe
Jan 15 2012 11:52:08: %PIX-6-106015: Deny TCP (no connection) from 192.68.1.45/49634 to 240.10.10.20/443 flags PSH ACK on interfe
Jan 15 2012 11:52:10: %PIX-5-106100: access-list outside_access_in permitted tcp outside/206.99.88.10(23183) -> DMZ/240.10.10.20(443) ]
Jan 15 2012 11:52:10: %PIX-6-302013: Built inbound TCP connection 1475554768 for outside:206.99.88.10/23183 (206.99.88.10/23183) to DMZ:WAD)
Jan 15 2012 11:52:10: %PIX-6-106015: Deny TCP (no connection) from 192.68.1.45/23183 to 240.10.10.20/443 flags ACK on interface e

Hi Stephen,
To troubleshoot this further, we would need to get a topology diagram of your network, as well as the configurations from all devices, so it would probably be better if you open a TAC service request.
Regards
Daniel

Scanning from 5520 to iPad in wireless direct mode ?

I have a Photosmart 5520 printer and a 3G iPad - without any other computer equipment or WiFi network or
router in the house. The printing from the iPad to the 5520 in the Wireless direct mode works well.
My question is if I can scan from the 5520 to the iPad ? Have looked in the HP ePrint app for directions
or control buttons but can't find any. Is scanning from 5520 to iPad possible ? Selecting "scan to computer"
on the 5520 control panel does not work.
Looking for any helpful comments
Thanks
Johann
This question was solved.
View Solution.

Hello Johan,
The HP ePrint app is a different app than the one I have mentioned above.
The HP Printer Control mobile app is a different one which also allow scanning.
simply open the Apple App Store, search for HP Printer Control and install it.
Through that app you will also be able to scan.
Say thanks by clicking the Kudos thumb up in the post.
If my post resolve your problem please mark it as an Accepted Solution

How to get transacted session in direct mode with jmsra adapter

Hi,
I use MQ 4.4u1 release with GF in EMBEDDED mode. I configured several connection factories with NoTransaction/LocalTransaction/XATransaction support. In my app I get a connection factory from JNDI tree, create connection/session/producer and send several messages to queue. Everything works fine when I don't use transactions. But, when I want to send messages in one transaction, the connection always provided to me non-transacted session. The session created via
Session session = connection.createSession(true, Session.SESSION_TRANSACTED);
request. I check the session transacted state and acknowledge mode right after i get it:
log.fine("Session: " + session + "; transacted: " + session.getTransacted() + "; ackMode: " + session.getAcknowledgeMode());
The log shows me that the session is not transacted and ackMode is 0 (DUPS_OK_ACKNOWLEDGE). If I try to commit the session after messages were sent I get the correct exception:
javax.jms.IllegalStateException: MQJMSRA_DS4001: commit():Illegal for a non-transacted Session:sessionId=3361979872663370240
Does anyone know how to get transactional session in direct mode?
Thanks, Denis.

I mentioned LOCAL because I misread your post and thought you were suggesting that LOCAL mode behaved differently.
If you want to send messages in a transaction from within a Servlet then I think you're expected to use a UserTransaction: Here's an example that worked for me:
 Connection connection = outboundConnectionFactory.createConnection();
 Session session = connection.createSession(true, Session.SESSION_TRANSACTED);
 userTransaction.begin();
 MessageProducer producer = session.createProducer(outboundQueue);
 int numberOfMessages = 10;
 for (int i = 0; i<numberOfMessages; i++) {
 Message message = session.createTextMessage("Hello world");
 producer.send(message);
 userTransaction.commit();
 connection.close();I obtained the UserTransaction with this resource declaration:
 @Resource(name = "java:comp/UserTransaction")
 private UserTransaction userTransaction;The EJB spec explicitly states that local transactions aren't supported in EJBs; I haven't found such an explicit statement for Servlets but suspect that JMSRA is taking the same approach.
As for imq.jmsra.direct.disableCM property - this appears to disable connection pooling and from your post changes other behaviour as well. How did you find out about it (other than by examining the code)? As far as I can see this is not a documented feature and is not necessarily tested or supported.

Content is not Panning while softkeyboard appears in GPU and Direct Mode (Adobe Air SDK 4.0.0.1390)

Hi,
My content is not panning while softkeyboard appears in GPU and Direct Mode(I have placed my input textfield at the bottom of the screen) it is working fine with the CPU and AUTO Mode. I am using Air sdk v 4.0.0.1390. I have checked my manifest file also and have added '<softKeyboardBehavior>pan</softKeyboardBehavior>' still it is not panning my content while keyboard appears.
Has anybody faced this problem earlier?
(On Android i am getting this problem on iOS it is working fine)

Could you please open a new bug report on this over at https://bugbase.adobe.com? When adding the bug, please include some sample code or a sample application so we can quickly test this out internally. If you'd like to keep this private, feel free to email the attachment to me directly ([email protected]).
Once added, please post back with the URL so that others effected can add their comments and votes.
Thanks,
Chris

Sun Java System Identity Manager 7.1 PasswordSync direct mode ERROR!

Hello,i wanna use direct mode to config the Sun Java System Identity Manager PasswordSync to avoid the complex configuration of JMS, but I get the following error in logs:
03/26/2008 10.52.34.062000 [2164] (../../../src/wps/passwordsync/lhpwic.cpp,591): EndpointURL: http://idmzone1.gmcc.net:8080/idm/servlet/rpcrouter2
03/26/2008 10.52.34.062000 [2164] (../../../../src/wps/agent/connect/RAEncryptor.cpp,69): RAEncryptor::Decrypt3DES: input length (16) moded to 2
03/26/2008 10.52.34.062000 [2164] (../../../src/wps/passwordsync/lhpwic.cpp,624): about to login...
03/26/2008 10.52.34.109000 [2164] (../../../src/wps/passwordsync/lhpwic.cpp,628): Login failed error code : -1072896682. Disassembing client
03/26/2008 10.52.34.109000 [2164] (../../../src/wps/passwordsync/lhpwic.cpp,648): Exit: GetClient
03/26/2008 10.52.34.109000 [2164] (../../../src/wps/passwordsync/lhpwic.cpp,916): Error getting our soap, bailing out.
It is really difficult to find the way to resolve this probblem..... PasswordSync direct mode works fine in 6.0 in my VM.. but error here in 7.1.
Is there anyone can give me a suggestion? Thanks you very much!

Tried Hot fix 81 also still giving me the error and re-rigisterd dotnet.dll
Log File for Hot fix 81
(../../../src/wps/passwordsync/lhpwic.cpp,559): Error reading dumpFileBase, no dump file generation on exception
(../../../src/wps/passwordsync/lhpwic.cpp,567): Exit: ReadRegistrySettings
(../../../src/wps/passwordsync/lhpwic.cpp,593): Soap client created
(../../../src/wps/passwordsync/lhpwic.cpp,594): ClientTimeout: 18000
(../../../src/wps/passwordsync/lhpwic.cpp,604): Proxy server not specified
(../../../src/wps/passwordsync/lhpwic.cpp,608): EndpointURL: http://idm-dev:80/idm/servlet/rpcrouter2
(../../../../src/wps/agent/connect/RAEncryptor.cpp,69): RAEncryptor::Decrypt3DES: input length (16) moded to 2
(../../../src/wps/passwordsync/lhpwic.cpp,641): about to login...
(../../../src/wps/passwordsync/lhpwic.cpp,645): Login failed error code : -2147467259. Disassembing client
(../../../src/wps/passwordsync/lhpwic.cpp,665): Exit: GetClient
(../../../src/wps/passwordsync/lhpwic.cpp,935): Error getting our soap, bailing out.
even if i gave wrong username and password it giving me the same error
Can someone help on this

Why 11gR2 scan have limited maximum to 3 ips

Hi,
I am not able to get the answer that why 11gR2 SCAN has limitation to have min 1 and max 3 virtual IPs. As it's not dependent on number of nodes in ths cluster, any idea what's the logic behind it .
Regards,
Dheeraj Vaish

Hi,
dheeraj wrote:
Hi Rajeysh,
Thanks for sharing such a valuable link, but still i did not get my answer why scan VIP it limited to max. 3. Why not it 4,5,6 or some other number ? why it is 3 ?Why not do the same question differently.
The Clusterware need more than 3 SCAN IP to provide high availability and load balancing? If you understand the concept and role of SCAN I believe you will know the right answer.
For all SCAN Listener going down is necessary to fails the three nodes where are registered SCAN Listener at the same time. Even if this happens, the CRS should take less than one minute to register the the SCAN Listener on the nodes that remain active. (SCAN is a small piece of a large system that is already prepared for failures)
Remember that SCAN IP does not establish connections with Oracle RAC, but manages and redirects connections to the nodes of the cluster. The connections are established using the Virtual IP (VIP). This means that if you stop all SCAN Listener/IP all connections that are already established are not affected, because they are using the VIP.
Oracle version 11.2 use up to three IP, because the engineering team studied and understood that to ensure high availability and load balance is necessary 3 SCAN IP. (just it)
It may be that this will change in the future but for now understand that 3 is enough to guarantee Grid Computing.
We could ask another question, how many DNS servers (cluster / failover) you have in your environment to provide HA. If your answer is up to three nodes, what happens if the three DNS servers fail at the same time as it is a point of failure (SCAN/VIP works with DNS).
This type of question leads us to Grid Computing.
One way to think about grid computing is as the virtualization and pooling of IT resources—compute power, storage, network capacity, and so on—into a single set of shared services that can be provisioned or distributed, and then redistributed as needed.
Just as an electric utility uses a grid to deal with wide variations in power demands without affecting customer service levels, grid computing provides IT resources with levels of control and adaptability that are transparent to end users, but that let IT professionals respond quickly to changing computing workloads.
The entire infrastructure must be prepared to support failure. If your environment is designed to support multiple types of failures you will see that IP Scan 3 is enough.
Regards,
Levi Pereira
Edited by: Levi Pereira on Aug 27, 2011 1:17 PM

Why timesten is slow in client/server mode

i am testing Timesten client/server mode and find that
it is to slow.
when using dircet mode, timesten can precoss about 40000 query pre second
but when change to client/ server mode
it can only process 1500 query pre second.
here is my config and test sql.
[Test_tt702]
Driver=//u01/oracle/TimesTen/tt70/lib/libtten.a
DataStore=//u01/oracle/TimesTen/tt70/info/DemoDataStore/Test_tt702
DatabaseCharacterSet=US7ASCII
TempSize=64
PermSize=250
Temporary=1
TypeMode=1
CREATE TABLE TEST999
A1 number NOT NULL PRIMARY KEY ,
A2 number,
A3 number
network card is 1000m,
query code:
PreparedStatement pSel = dbConn.prepareStatement("select a1,a2 from TEST999 where a1=?");
rs = null;
int a1=0;
int a2=0;
for(int i=0;i<80000 ;i++)
 pSel.setInt(1,i );
rs=pSel.executeQuery( );
if (rs.next()) {
 a1 = rs.getInt(1);
 a2 = rs.getInt(2);
 if( i%8000==0) {
 System.out.println("select "+ i +" res="+a1 +" time " + getTime_v2());
 rs.close();
direct mode time : 80000 query is 2 second
client/server mode in the same machine : 80000 query is 12 second
client/server mode in the different machine : 80000 query is 54 second
any one have idea about this?
is it the jdbc driver 's promble?

it is to be expected that there will be a big difference in performance between direct mode and client/server due to much greater overhead in client/server, especially if the client is on a different machine. However, the differences you are seeing here are larger than I would normally expect.
You say (I think) that the network is 1 GB, correct? What is the hardware spec of the test machine(s)? Have you tuned the O/S network stack for optimal performance?
Typically, for local client/server using the fastest IPC mode (shmipc) I expect performance of around 20-30% of direct mode and for remote client/server with a GB LAN I would expect performance of around 10-20% of direct mode.
Chris

How to run report RPTQTA00 direct mode via FM SUBST_START_REPORT_IN_BATCH

Hello Experts,
I am using SUBST_START_REPORT_IN_BATCH to generate absence quotas for the employees using report program RPTQTA00. But it is taking too much time. I want to use RPTQTA00 in direct mode but I dont know what settings I need to do before using this method. Please guide me on this.
Thanks in Advance
Pratibha
Edited by: pratibhas on Jan 27, 2011 1:57 PM

Hi,
I suggest you not to use the "E:\" directory letter, but the REPORTS_PATH instead.

from the Online Help


On Windows, edit environment variables through the Registry Editor (Start > Run > Regedit).


On UNIX, edit environment variables by revising and running the shell script that defines the initial default values (reports.sh). If you do this, be sure to keep a backup of the original, unaltered reports.sh file.


Regards
JeanYves

Why is my bandwidth limited in direct mode?

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