Ping with '-t'

I am a new user to LabView! I was playing with System exec.vi for the command 'ping'. It worked out find as it is. But, now, the problem comes when I use 'ping xxx.xxx.xxx.xxx -t'. In Windows, the only way to stop this execution is by pressing ctrl+C. How to do it with System exec.vi though! Anyone can help me with it?
Thank you!
由 BooJay 在 07-29-2008 03:53 AM 上編輯的訊息

Hi BooJay,
you can use the functions from the user32.dll to simulate the key down event. The vi´s and the way how to do it, are in this thread.
http://forums.ni.com/ni/board/message?board.id=170&message.id=312631&query.id=142097#M312631
Hope it helps.
Mike

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Help with my interleaving ?

Okat then this is a very long story, so you may be reading for some time. This starts back on the (26/05/2012) and is still open to this date,  my broadband speed were 18.5Mb Dwonload, and 1.3 Upload at the start of this. Latency Type "Fast"
I have had my BT broadband for over 3 month now and my speed were always  18.5Mb Dwonload, and 1.3 Upload at the start of this. Latency Type "Fast", and I had never had any problem.
Okay there i go, On the (26/05/2012) I phone 0800 111 4567, about a drop in my connection and that i kept droping out every 40 minutes or so/ They told me to plug in the test socet, so I did and they did there phone line test, and said that there was allot of static on my phone line that is why I have all the Noise on my phhone. They siad to give it 72 hours to stort its self out, so I did. and siad thank you.
(30/05/2012), this problem has gotten worse, and my conection speeds drop down to 6.2 Download and 0.2 Upload, along with my nosie margin hitting 32dB / 38dB, and all the other were almsot the same as this...... I called 08000 111 4567 and told them about the drop in my speed, and that it now keeps droping out every 30 monutes.
They then ran there speed test, and then told me that there was staic on my phone line. I said..... " I know that however I was told that this would stable out over the next 72 hours, 3 das ago and not get worse" They tha told me to wiat another 24 hours, I said yeah sure that is okay, as long as it gets better. They then told me that I would get a called back on the (31/05/2012)
(31/05/2012), Came and past, i went on the phone at 01.30am about this and told them that i am not happy with this, and that I would like the sorted out ASAP, and I do not what to be waiting around any longer. They tolf me to give the 10 mins while they run some test, and they put me on hold they were on 2 mins.
They then told me that there was a problem withing to propertey, and that they would send an engineer out, I told the to NOT send an engineer out as I will check all of my wire in the morning when I wake up, and I than said that, that is all, and they would give me a call back in 24 hours to see if the problem was fixed.
(01/06/2012) So I checked all micro filter, and replaced them with brand new ones, and I checked all wired, and even truen off my microwave, anlong with anothing else that could cause any probelm. I the took my home Hum and unpluged every thing else and I was still getting the probelm, which ruled out all pronlems in my house, as this was puged right in to the Main phone socket, with a microfilter.
I waited up to 18:00pm for a called back, which I never got, so at 19:30pm I called back up and told them to look up on my account notes, about what is going on, and I hoped that they would understand what they have to do....... Well I got told to wait and let then run there test, Again !!!!!
As you can tell I'm starting to get very Inpactient by now.
Tey came back 5 minutes later and told me that there was a fault, at the excanged, I said then why did I get told yesterday that the fault was in my house ??????????????
These his words " I'm so sorry about this and that you have been given the wrong information about the fault, and that I can assure you that I will, take this fault, and handle it myself, and that I will pass the case to the BT wholesale team"
I was also told that, BT wholesale would not need access to the house, and that there was no need to be in........
(02/06/2012) Well it was just aswell that I was in as 3 BT open reach Vans were out sinde my house, the next day at 14:00pm, one of them came in and ran some test, He told me that he was a boost engineer, that there was no problem at the excahnged, (Now bare in mind that I was told that there was !!!!!!!!!!!!!!!!!!!!!!!)
He was here for about 45 minutes, and chancked everything, he changed the microflters, and evern the ADSL wire to the Home Hub. And the ran more test, and found that the Latency Type, is Interleaved, and told me that this is why my round trip speed is now 92 MS ping, When It was fast it was only 18 MS ping with 0 MS Jutter.
He pick his mobile up and phone some one, and asked for the Interleaving to be turned of, as It had been put on both my downstream and upstream, with in 2 minutes it was truned of and I had my full spped back to 19.1MB download, and 1.4 Upload with was fater than what I was getting. to start and my Lactency type was fast agian.
(03/06/2012) I woke up and went to ckeck my emails just to find that screen with "YOUR HOME HUB CAN NOT CONNECT" (Now by this time I was steam out of my ears !!!!!!!!!!!!!!!)
I turn the home hub off then back on that fixed the connection but not the spped, I was now back down to 9.5MB Download and 0.7 upload, and my lateancy type was Interleaved again. I left this (06/06/2012), as if I went on the phone I would of kicked of with them.
(03/06/2012)-(06/06/2012) My internet kept droping, and there was once that it drop as low as 1.1 MB download and 0.1MB upload.
(06/06/2012)- 17:50pm I called 0800 111 04567, and siad take a look at my note on the account as I am not saying it all agian !!!!!!!!!
2minutes later, he said "I'm sorry for all this, I will work as best as I can to fix this for you" I explained to himthat all was fine when my interleaving was off and was "FAST", I give him 5 mins to look about, and share my PC sreen,
He then tolf me to put an order in to turn of the interleaving agian, and to wait 48 hours, and he will call me back. I said Yas sure, anthing that will fix this !!!!!!!!!!!!!!!
(08/06/2012) Came and past still no called back, so I went out for a drink, to forget this.
(09/06/2012) I phone up and told them that was was to get a called back yesterday, and that I never did, he siad two minutes, and I was put on hold, he came back and siad that an order was never placed,
I said what ?!?!?!?!?!?!?!?!?!?! but I kept my cool, and said can you please place an order for me about this. He said yes sure, and please wait 24 hours to this to tak effect.
(10/06/2012), my internet drop out when ever I tried more than 3 devices on the home hub at any given time. I let this pass as I just could not be fuessed with it.
(12/06/2012) Called 0800 111 4567 and another order for the interleaving to be turned of was placed....... And waited another 24 hours.
(13/06/2012)-(14/06/2012), I was not in the house, all day as I would of freaked out if the internet was still not working.
(15/06/2012) I called 08001114567, and got throught to to them, I asked to speak to their menager, I was put to him stright away, I explained what is going on and that i am paying £52.12 a month for that, and that I'm getting a service that is not what I am paying for, and that I will begoing to the back on monday moring to cancell all direct debits to BT, unless this is FIX !!!!!!!!!!!
He ask for informaion this is what I give my, apart from my account info:
ADSL Line Status
Connection information
Line state:
Connected
Connection time:
0 day, 02:15:59
Downstream:
8,189 Kbps
Upstream:
459 Kbps
  ADSL settings
VPI/VCI:
0/42
Type:
PPPoA
Modulation:
G.992.5 Annex A
Latency type:
Interleaved
Noise margin (Down/Up):
13.1 dB / 6.7 dB
Line attenuation (Down/Up):
24.0 dB / 11.7 dB
Output power (Down/Up):
0.0 dBm / 11.2 dBm
FEC Events (Down/Up):
18579276584 / 2502187
CRC Events (Down/Up):
249976852 / 332698
Loss of Framing (Local/Remote):
0 / 0
Loss of Signal (Local/Remote):
0 / 0
Loss of Power (Local/Remote):
0 / 0
Loss of Link (Remote):
0
HEC Errors (Down/Up):
226974584 / 66484
Error Seconds (Local/Remote):
0 / 653
he said thank you, but look at this, this is what I was getting befoe any of these problems
ADSL Line Status
Connection information
Line state:
Connected
Connection time:
32 day, 18:49:17
Downstream:
21,196 Kbps
Upstream:
1,589 Kbps
  ADSL settings
VPI/VCI:
0/38
Type:
PPPoA
Modulation:
G.992.5 Annex A
Latency type:
Fast
Noise margin (Down/Up):
6.1 dB / 13.7 dB
Line attenuation (Down/Up):
26.3 dB / 9.8 dB
Output power (Down/Up):
0.0 dBm / 12.3 dBm
FEC Events (Down/Up):
0 / 0
CRC Events (Down/Up):
26 / 1
Loss of Framing (Local/Remote):
0 / 0
Loss of Signal (Local/Remote):
0 / 0
Loss of Power (Local/Remote):
0 / 0
Loss of Link (Remote):
0
HEC Errors (Down/Up):
0 / 0
Error Seconds (Local/Remote):
0 / 0
This is what I used to get. !
(17/06/2012) Today Igot a called back and they told me that the interleavering was off, I check and it was not !!!
They told me that on there systems that It was, so I trurn of the home hub and then truned it back on, still it was still on, I then rest the the home hub and still no joy.
I asked for my case to be passed back to the BT Whole sale team as there were the ones who fixes it the first time within two minutes, that the 0800 111 4567, can not do anything for me...... S it has been passed over to them, and I a expecting a call back between 11 am & 1pm tomorrow, from them.
When I first got my BT broadband I never had anyproblems until, the 26/05/2012, is there any one at BT who I can contact to turn off the interleavering please ?
Thank you for reading this, and I respect an reply that you have.
Solved!
Go to Solution.

This is what I have today, just 2 mins ago:
Line state:
Connected
Connection time:
0 day, 03:28:33
Downstream:
11,115 Kbps
Upstream:
388 Kbps
  ADSL settings
VPI/VCI:
0/37
Type:
PPPoA
Modulation:
G.992.5 Annex A
Latency type:
Interleaved
Noise margin (Down/Up):
5.9 dB / 13.5 dB
Line attenuation (Down/Up):
24.0 dB / 11.7 dB
Output power (Down/Up):
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FEC Events (Down/Up):
406598375 / 2841597
CRC Events (Down/Up):
4987659 / 556974
Loss of Framing (Local/Remote):
0 / 0
Loss of Signal (Local/Remote):
0 / 0
Loss of Power (Local/Remote):
0 / 0
Loss of Link (Remote):
0
HEC Errors (Down/Up):
652378 / 1569
Error Seconds (Local/Remote):
215 / 148

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Supposed to improve performance, but its rubbish and will make hardly any difference under mac os to the speed but will certainly affect your mac mini performance(you may have a similar setting switched on in your routers and mac os dont like it)
We stumbled across this by first disconnecting one of the airport express devices from my dlink network, and using it on its own default apple wireless settings, effectively making it a standalone wireless network, and not via the dlink router
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Hello macfar14. Welcome to the Apple Discussions!
For just streaming iTunes and/or for sharing a USB printer, the AirPort Express Base Station (AX) just needs to be configured as a wireless client ... which you already attempted to do.
Just to be sure nothing was missed, here are the basic steps to do this:
Either connect to the AX's wireless network or connect directly, using an Ethernet cable, to the Ethernet port of the AX, and then using the AirPort Utility in "Manual Setup" mode, make the following changes:
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o Verify Password: <re-enter the existing wireless network password>
Music
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o Verify Password: (optional)
o Click Update to write the new settings to the AX
In iTunes:
iTunes > Preferences... > Advanced > General
o Look for remote speakers connected with AirTunes (checked)

EzVPN issues with a Comcast cable connection

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interface Vlan1
description primary LAN connection
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ip tcp adjust-mss 1452
bridge-group 1
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no ip proxy-arp
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encr aes 256
group 2
crypto isakmp policy 30
encr aes 256
authentication pre-share
group 2
lifetime 28800
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encr aes 256
group 2
lifetime 28800
crypto isakmp keepalive 60 10
crypto isakmp nat keepalive 60
crypto isakmp client configuration group comcast-remote1
key testing1234
acl comcast-remote1_networks
save-password
crypto isakmp profile comcast-remote1_isakmpprof_dyncorp
match identity group comcast-remote1
isakmp authorization list comcast-remote1
client configuration address respond
accounting svpn_accounting
keepalive 60 retry 10
crypto ipsec transform-set high_security esp-aes esp-sha-hmac
crypto ipsec df-bit clear
crypto dynamic-map comcast-remote1_dynmap 20
set transform-set high_security
set isakmp-profile comcast-remote1_isakmpprof_dyncorp
reverse-route
crypto map svpn-map 109 ipsec-isakmp dynamic comcast-remote1_dynmap
interface FastEthernet0/0
bandwidth 102400
no ip address
speed 100
full-duplex
no cdp enable
interface FastEthernet0/0.40
encapsulation dot1Q 40
ip address 65.x.x.x 255.255.255.0
no cdp enable
crypto map svpn-map
crypto ipsec fragmentation before-encryption
interface FastEthernet1/0
switchport access vlan 4
bandwidth 102400
duplex full
speed 100
no cdp enable
interface Vlan4
ip address 192.x.x.x 255.255.255.0
ip virtual-reassembly
Thanks,
Mike

in your client class - method go()
you have try catch like this: make changes at 2 places commented below
try {
Socket s = new Socket("localhost", 7000);
// ObjectInputStream fromServer = new ObjectInputStream(s.getInputStream());
fromServer = new ObjectInputStream(s.getInputStream());
// ObjectOutputStream toServer = new ObjectOutputStream(s.getOutputStream());
toServer = new ObjectOutputStream(s.getOutputStream());
threadNum = (Integer) fromServer.readObject();
int i = 0;
System.out.println("Thread number: " + threadNum);
System.out.println("Connected to server");
do {
} while (!disconnect);
fromServer.close();
toServer.close();
System.out.println("Connection is closed");
} catch (Exception err) {
System.out.println(err.getMessage());
}

Loss of Packet with Ethernet Over SDH

Hi all,
I have a strange behaviour when I connect 2 giga optical interface of 2 cisco 7600 over an SDH link (7600 - ADM ----sdh----ADM - 7600).
I can observe loss of packet even with a simple ping with size 100B...but the misterious is that if I start different parallel sequence of the same ping (ex 10000 pckts)..after the 3rd all works fine (all the 3 ping have loss no more)!!!
Furthermore if I use fastethernet instead of gigibitethernet, all works fine.
Any Idea?
Many thanks in advance for your support

Reseat the card it solves the problem. Ensure packets Drops but no CRCs or BIPs it means due to the hardware failure .

Ping with '-t'

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