E51 SIP and NAT keep alive

I am brad new to the Nokia E seris. I have set up a SIP peer but the problem is trying to call the phne using sip as there seems to be no setting o configure NAT keep alive
Cananyone help or point me?
Thanks
Dave

I Googled up the following:
http://lists.apple.com/archives/Macnetworkprog/2006/Jul/msg00040.html
I am having this issue:
http://discussions.apple.com/message.jspa?messageID=7256265#7256265
Are all these things the same issue?
My ISP "tells me" that they will not allow more than one IP address per account. I have a basic cable modem i.e. not a router. Its a D-Link DCM-202. I have been told to try a level-2 switch but I can't see how that will work. As far as I can see the DCM-202 cable modem is bridging to my AEBS so that is allocated the WAN IP address by the ISP's DHCP server. Does this sound right?
I'd like to create an actual DMZ but since my cable modem only has one port I can't see how I can do that unless I use 2 routers. If I try this I am expecting that I'd have complicated port forwarding configurations no?

Similar Messages

AE with inbound SIP and RTP over UDP - Will not open ports

I am using a Linksys SPA962 IP Phone via an Airport Express with the latest firmware connecting to an Asterisk PBX (http://www.asterisk.org) over the internet. I may make outbound calls and have my incoming and outgoing audio over RTP with the appropriate UDP ports no problem. But, when I receive an inbound call, I get the SIP INVITE no problem, but the AE refuses to open those RTP ports. I have NAT keep alive at 15 seconds.
Now, I have tried almost every combination. Enabling NAT-PMP forwarding to all of the appropriate IP/Ports, turning it off (really should not be necessary with keep alive on register with the Asterisk). I am stumped, it is almost as of AE does not like UDP for inbound. I have others using Linksys routers with a similar configuration working inbound and outbound no problem.
I am stumped. Ideas? Chuck the AE in the bin?

I Googled up the following:
http://lists.apple.com/archives/Macnetworkprog/2006/Jul/msg00040.html
I am having this issue:
http://discussions.apple.com/message.jspa?messageID=7256265#7256265
Are all these things the same issue?
My ISP "tells me" that they will not allow more than one IP address per account. I have a basic cable modem i.e. not a router. Its a D-Link DCM-202. I have been told to try a level-2 switch but I can't see how that will work. As far as I can see the DCM-202 cable modem is bridging to my AEBS so that is allocated the WAN IP address by the ISP's DHCP server. Does this sound right?
I'd like to create an actual DMZ but since my cable modem only has one port I can't see how I can do that unless I use 2 routers. If I try this I am expecting that I'd have complicated port forwarding configurations no?

Keep alive a SIP Trunk?

Hi!
I'm trying to register a SIP Trunk to a SIP server. The trunk registration is done, but not keep alive. The trunk register with SIP server when an outgoing call starts, but when this call ends, the SIP trunk closes the connection with SIP server. Then, the
outgoing calls work OK, but the incoming calls doesn't work because the SIP Trunk is unregistered while no active outgoing calls.
Then, can i keep alive the SIP Trunk registration with SIP Server?
Thanks!!!

You need to talk to the SIP provider and get them enable OPTIONS on the SIP Trunk and enable OPTIONS on the PSTN Gateway. Check the registration interval of the SIP trunk on the Gateway and try increasing it to a higher value.
http://thamaraw.com

HFM Web Sever Configuration--Keep Alive and Session Time Out Optimal Config

We recently implemented an HFM 9.3.1 environment. We are using Windows 2003 Enterprise SP2 servers with IIS6. We have two HFM Web servers connecting to an application cluster with two application servers in the cluster. We were getting some errors when trying to unlock HFM cells in Workspace, but we were able to perform the functions fine on the application using the WIN32 client.
I opened a ticket with support and they recommended modifying the subcontext.properties file located in %HYPERION_HOME%\deployments\WebLogic9\servers\Workspace\webapps\workspace\conf. They recommended changing the following settings:
#KeepAliveInterval=30
#SessionTimeout=60
From what I understand, these settings are for the communication between the HFM Web Servers and the application cluster servers. I'm wondering how changing these settings may affect our environment. Are there negative effects and/or trade-offs for changing these settings? Is there a recommended threshold or maximum value?

Hi Dinesh,
This cannot be achieved without development enhancements to some standard SAP framework component, to introduce a "keep-alive" concept. If you are using a CMS for CTI or email integration, you need to ensure it supports keeping the communications session alive also.
Sincerely,
Glenn
Glenn Abel
Covington Creative
www.covingtoncreative.com

Workstation keep-alive and connectivity failure detection

Dear all,
I intend to automatically detect network failures from my workstation client and have it attempt to reconnect to the server on its own.
Browsing the documentation for related information I saw the keep-alive option. If I understood correctly you can have the workstation generate periodic keep-alive messages to the server and if these are not acknowledged, all subsequent ATMI calls will fail with TPESYSTEM.
My doubts regarding this are the following:
1) Is there some dummy ATMI function I can invoke periodically to check for a disconnection? Otherwise network failures might go by unnoticed if there are periods where my WSC doesn't require to communicate with the server.
2) Once I get a TPESYSTEM failure, is there some way to programatically discriminate if the cause is a network disconnection? It is a pretty generic error after all.
3) Once all ATMI functions start failing due to keep-alive detecting a network failure, can the system recover on its own? or must I reconnect to the server? What I mean is, maybe some keep alive messages where lost, the system passes to the 'disconnected' state, but then the K.A. messages keep being generated and upon correct acknowledgement of these, subsequent ATMI calls will stop failing.
4) Does the WSC go to 'disconnected' state after the first unanswered keep alive message? or is there some sort of tolerance like, say, 'If N messages in a row are not answered then assume the connection to be dead'.
I'm sorry if it was too long a post, but neither searching the documentation nor this forum clarified any of these issues for me.
Many thanks for your attention.
Regards.

Cacho,
1. I assume that you're talking about the WSL CLOPT option "-K
{client|handler|both|none}", which causes periodic keepalive messages to be
sent. When this option is used, there is no need for the WSC to perform any
periodic operations to keep the network connection alive.
However, if you are worried that the network might suffer a transient
failure and you want to perform your first ATMI call after an extended
period of inactivity as quickly as possible without waiting for another
tpinit(), you may want to perform periodic dummy operations so that you can
reissue the tpinit() if needed as soon as the network connection is
restored.
One option is to make a tpcall() to the ".TMIB" service with an FML32 buffer
where TA_OPERATION is set to "GET" and the other fields are set to retrieve
some system attribute. There is an example of how to call .TMIB at the end
of the TM_MIB(5) manual page. You would want to perform a GET operation
rather than the SET operation shown in that example.
Another option is to write a null service in one of your application servers
which just calls tpreturn() and have your client make periodic cals to that
service.
Calling a verb such as tpalloc() or tpconvert() would not be sufficient,
since these calls do not result in any network traffic.
2. The tperrordetail() function is available in newer releases of Tuxedo to
provide additional information about certain Tuxedo errors. When a
workstation client is disconnected, tperrordetail(0) will return TPED_TERM.
3. If there is a network failure, workstation clients must call tpinit() to
reauthenticate to the system. This is necessary for security reasons.
4. The keepalive option is passed down to the underlying network provider
and Tuxedo has no further involvement with keepalive once it informs the
network of this option. For Sockets the option passed is SO_KEEPALIVE; you
can do a web search on SO_KEEPALIVE to see exactly how the network treats
keepalive messages on your particular platform.
Ed
<Cacho Nakamura> wrote in message news:[email protected]...
Dear all,
I intend to automatically detect network failures from my workstation client
and have it attempt to reconnect to the server on its own.
Browsing the documentation for related information I saw the keep-alive
option. If I understood correctly you can have the workstation generate
periodic keep-alive messages to the server and if these are not
acknowledged, all subsequent ATMI calls will fail with TPESYSTEM.
My doubts regarding this are the following:
1) Is there some dummy ATMI function I can invoke periodically to check for
a disconnection? Otherwise network failures might go by unnoticed if there
are periods where my WSC doesn't require to communicate with the server.
2) Once I get a TPESYSTEM failure, is there some way to programatically
discriminate if the cause is a network disconnection? It is a pretty generic
error after all.
3) Once all ATMI functions start failing due to keep-alive detecting a
network failure, can the system recover on its own? or must I reconnect to
the server? What I mean is, maybe some keep alive messages where lost, the
system passes to the 'disconnected' state, but then the K.A. messages keep
being generated and upon correct acknowledgement of these, subsequent ATMI
calls will stop failing.
4) Does the WSC go to 'disconnected' state after the first unanswered keep
alive message? or is there some sort of tolerance like, say, 'If N messages
in a row are not answered then assume the connection to be dead'.
I'm sorry if it was too long a post, but neither searching the documentation
nor this forum clarified any of these issues for me.
Many thanks for your attention.
Regards.

Keep alive mgs duration of wlc and ap , minimum bandwidth requried to register ap to wlc from remotely

what is the keep alive duration between cisco 1142 ap and 5508 wlc . Can we able to increase it .
How much bandwidth minimum required to register an ap which is in remote brach .

AP heart can be configured on WLC. Wireless>> Access Points>> Global Configuration>> High Availability>>
H REAP WAN Considerations:
http://www.cisco.com/en/US/products/ps10315/products_tech_note09186a0080736123.shtml#WAN

I'm trying to purchase a subscription for nat geo and it keeps saying i cant

I'm trying to purchase a subscription for nat geo and it keeps saying i cant

What exactly does the message say?

How to add network .keep alive back to firefox... it's missing and my browser is too slow. i need your help i can't work like this

<blockquote>Locking duplicate thread.<br>
Please continue here: [[/questions/954029]]</blockquote>
keep alive missing from about:config settings can it be added back? tell me how and i will

No, you can't add this missing pref back.<br />
Support to disable keep-alive has been removed and keep-alive is always enabled.
See "A Preference to disable HTTP Keep-Alive has been removed":
*https://developer.mozilla.org/en-US/docs/Site_Compatibility_for_Firefox_17
*Bug 770331 – Remove HTTP Keep-Alive disable pref

Keep-alive problem in apache/weblogic

I have a server with Weblogic 5.1 and Apache
1.3.12 with the weblogic-plugin.
When apache serves pages, the keep-alive works
fine.
When weblogic serves pages, the keep-alive works
fine.
When i added a handler in apache so all requests
to apache should go to weblogic through the
plugin, the keep-alive stopped working.
Anyone seen this before?
Gunnar

send a message to [email protected] with as much info as you can. i d
on't think they're watching the newsgroups for bug reports.
maybe someone who frequents the newsgroups regularly could do a FAQ...
anyone actually got time?
"Gunnar" <[email protected]> wrote in message
news:3a51995e$[email protected]..
In case anyone wondered:
I tried with sp5 and sp7 and everything worked fine. It seems sp6 is
buggy...
Gunnar <[email protected]> skrev i
meldingsnyheter:3a41e618$[email protected]..
I have a server with Weblogic 5.1 and Apache
1.3.12 with the weblogic-plugin.
When apache serves pages, the keep-alive works
fine.
When weblogic serves pages, the keep-alive works
fine.
When i added a handler in apache so all requests
to apache should go to weblogic through the
plugin, the keep-alive stopped working.
Anyone seen this before?
Gunnar

How to keep alive a session in Web Services?

I have to do my project, that will be including some following features:
1. Login to Application through Web Services method. For example:
http://mydomain.com/web-services/Login?WSDL
2. After logging in, use mySms method to send message to Cellphone through Web Services! For example:
http://mydomain.com/web-services/mySms?WSDL
My questions are:
1. How can I keep alive the session after logging in the application in Web Services? In Web, I can use "Session".
2. If someone has not logged in the Application, he/she could not use mySms method for sending Sms. How can I do that?
3. I know, when I invoke a Web Services, one JavaBean has been called, and this bean is persistence with his own states. It means, if I set value to parameters of this bean, these values are persistence for invoked methods by other persons.
For example:
mySms bean has a private field "jid" inited with NULL value.
Person A invoked mySms.
Then, A set jid of mySms to value "A".
Person B invoked mySms. B got jid value. He receive the result value is "A".
The question is, how can I set mySms bean so that mySms bean is not persistence?
Thanks many!

Hi,
I can right away answer your FIRST Question.
Since WebServices are PURELY Based on SOAP which is in tern based on HTTP, they rely on a Stateless protocol.
I am sure you know that the HTTP is the STATELESS Protocol and so you can not maintain Session and so EACH Http REQUEST is considered as a SEPERATE REQUEST.
Now, still you want to maintain the Session in WebServices,
The simple answer is PASSING PARAMETERS.
Just Maintain your Session on Client (If you are using JSPs or Servlets to CAll WEBSERVICES then maintain Session through your HTTPSession) and each time you Invoke WebService PASS ON REQUIRED Parameters.
This Approach is Exactly like your URL REWriting OR your Parameters Passing through QUERY STRINGS.
I hope you got what I am saying!
Take care,
Himanshu/

WRT54G v 7.0 -- Setting "Keep Alive: Redial Period" not correct (radio button)

Hi,
I own a Linksys-Router WRT54G v7.0 with firmware v7.00.8 build 008, Jul. 9, 2009.
On the web GUI (Setup/Basic Setup) there's a setting "Keep Alive: Redial Period XX Sec.". As I'd like to stay connected with my provider permanently, I've set the radio button to "Keep Alive: Redial Period" and the according text field to "30" seconds. Then, I've clicked "Save Settings" and got a confirmation message that the settings got saved.
Anyway, even after saving the settings the according radio button is still set to "Connect on Demand...". But that is only true for newer browsers, like e.g. IE8, IE7 or Firefox 8. If you use an older browser, like e.g. IE6, then the radio button is correctly set to "Keep Alive: Redial Period" with a value of "30" seconds.
Conclusion: The settings get correctly saved by the router (I can confirm that), but they don't get correctly shown in the web GUI. Looks like a HTML/Javascript bug in the router's admin web GUI. That's really annoying as you never exactly know the effective settings...
Can someone confirm that bug? Is there a newer firmware than version 7.00.8?
Regards,
Patrick

Try to clear the browser's cache as well.
"Don't fix it if it ain't broken."

Weblogic proxy plugin closes keep-alive connections to clients randomly

In short we have following arhitecture:
clients ---> wl proxy plugin 1 ----> weblogic 1
clients ---> wl proxy plugin 2 ----> weblogic 2
Beacuse of the application/installation specific requirements, we are not using failover, one wl proxy always forwards requests to one weblogic (simple configuration).
Application is TR-069 protocol based (SOAP over HTTP) so it very much relays on persistence TCP connections (Connection: keep-alive). This TCP persistence has to work correctly in order that TR-069 messages are exchanged in required order, otherwise we have a error on application layer.
Here and there we've noticed applications errors which suggest that we have some problems in TCP connection between the client and the weblogic server. After sniffing, we've noticed that weblogic proxy plugin (Apache) randomly, or because of some other reason we do not know, decides to close TCP connection to client, even app on weblogic did not request so ???
As a result, client opens new connection to the server with new TR-069 session and it gets bounced beacuse it allready has one open on weblogic server.
We've sniffed, traced everything we could, we were searching for patterns in time, etc... but we can not find the reason why proxy plugin decides to close the connection to the client (not to the weblogic server).
Trace (replaced sensitive information):
Thu Apr 29 15:05:50 2010 <958012725463463784> URL::parseHeaders: CompleteStatusLine set to [HTTP/1.1 200 OK]
Thu Apr 29 15:05:50 2010 <958012725463463784> URL::parseHeaders: StatusLine set to [200 OK]
Thu Apr 29 15:05:50 2010 <958012725463463784> parsed all headers OK
Thu Apr 29 15:05:50 2010 <958012725463463784> sendResponse() : r->status = '200'
Thu Apr 29 15:05:50 2010 <958012725463463784> canRecycle: conn=1 status=200 isKA=1 clen=545 isCTE=0
Thu Apr 29 15:05:50 2010 <958012725463463784> closeConn: pooling for '$IP$/$PORT$'
Thu Apr 29 15:05:50 2010 <958012725463463784> request [$URL$] processed successfully..................
!!!! Now it closes the TCP connection and inserts "Connection: close" HTTP header !!!
WL proxy plugin conf params are:
WebLogicCluster $IP$:$PORT$
DynamicServerList OFF
KeepAliveTimeout 90
MaxKeepAliveRequests 0
KeepAliveSecs 55
Apache worker configuration is:
<IfModule mpm_worker_module>
PidFile var/run/httpd-worker.pid
LockFile var/run/accept-worker.lock
StartServers 2
MinSpareThreads 25
MaxSpareThreads 75
ThreadLimit 200
ThreadsPerChild 200
MaxClients 2000
MaxRequestsPerChild 0
AcceptMutex pthread
</IfModule>
Why weblogic proxy plugin ignores Keep-alive directive and decides to close connection to the client by itself?
Any help?

If a WebLogic Server instance listed in either the WebLogicCluster parameter or a dynamic cluster list returned from WebLogic Server fails, the failed server is marked as "bad" and the plug-in attempts to connect to the next server in the list.
MaxSkipTime sets the amount of time after which the plug-in will retry the server marked as "bad." The plug-in attempts to connect to a new server in the list each time a unique request is received (that is, a request without a cookie).
Note: The MaxSkips parameter has been deprecated as the MaxSkipTime parameter.
See also here: http://download-llnw.oracle.com/docs/cd/E13222_01/wls/docs81/plugins/plugin_params.html
You said the problem arises under significant load. Maybe, it is wise to tune the number file descriptor's on your operating system. HTTP connections are nothing more than TCP sockets on the operating system. All modern operating systems treat sockets as a specialized form of file access and use data structures called file descriptors to track open sockets and files for an operating system process. To control resource usage for processes on the machine, the operating system restricts the number of open file descriptors per process. You should be aware that all TCP connections that have been gracefully closed by an application will go into what is known as the TIME_WAIT state before being discarded by the operating system.
On most unix systems you can use netstat -a | grep TIME_WAIT | wc -l to detemine the number of socket in time_wait state. You have to check with your system adminstrator how to tune the tcp_time_wait_interval. On solaris you can use: /usr/sbin/ndd -set /dev/tcp tcp_time_wait_interval 60000

Which port to use for the peer-keep alive

Hi All,
We have 2 Nexus 6001s in our data center.
The management port of each 6001 is connected to the other and this link is used as the peer keep alive link.
My colleague is suggesting that we use one of the inline data ports as the keep alive link.
Can you please advise on the pros and cons of using management/inline port as keep live link and the best practise to follow in this case?
Thanks,
Pete

Hi Pete,
Here are the best recommendation in order of preference.
1. Use mgmt0 (along with management traffic)
* Pros: whats good on this option is you are totally separating the VPC Peer keepalive link on another VRF (management) and does not mingle with the data or global vrf..
* Cons: VPC PKL is dependent on the OOB management switch.
2. Use dedicated 1G/10GE front panel ports.
* Pros - can just be a direct link between the N6K pair and not dependent on other boxes.
* Cons - you need extra SFPs for VPC PKL while the VPC PKL traffic join the global VRF.
HTH
Jay Ocampo

Need help with HTTP keep-alive

Hi folks!
I have this very simple web server and I would like to add keep-alive support. I've been trying to get my head around it for a while and could need some help (I found this question in the archive, but those replies didn't help)...
This is my starting point (stripped down to the basics):
/* A listener thread that accept incoming requests by creating new request handlers */
public class HTTPListener implements Runnable
    private ServerSocket serverSocket;
    public HTTPListener(int port)
        // Try to create a server socket on specified port
        try
            serverSocket = new ServerSocket(port, 0);
        catch (IOException ex)
            System.err.println("Oops!");
    public void run()
        while (!Thread.interrupted())
            try
                // Listen on server socket until a request arrives
                Socket s = serverSocket.accept();
                // Create handler to service request
                RequestHandler h = new RequestHandler(s);
                new Thread(h).start();
            // Server socket closed when listening
            catch (SocketException ex)
                Thread.currentThread().interrupt();
            // Failed to close socket or failure during server socket accept
            catch (IOException ex)
                System.err.println("Failed to accept request");
        try
            serverSocket.close();
        catch (IOException ex)
            System.err.println("Hmpf...");
/* Handler that prints out requests and always answers with status 200 */
public class RequestHandler implements Runnable
    private Socket socket;
    public RequestHandler(Socket s)
        socket = s;
    public void run()
        System.out.println(">>> New request handler");
        try
            BufferedReader reader = new BufferedReader(new InputStreamReader(socket.getInputStream()));
            String str;
            while ((str = reader.readLine()) != null)
                System.out.println(str);
            sendDummyReplyWithKeepAlive();
            reader.close();
            socket.close();
        catch (IOException ex)
            System.err.println("Crap, got an exception!");
}When I run the server (which in reality has a little more to it) I never get more than one request printed for each ">>> New request handler", which is not surprising!
Now, with keep-alive support I expect to get consecutive requests from the same client printed by the same handler instance. What I have to do (as I've understood from my readings) is to modify the while loop in the request handler that reads from the socket so that it spins until the connection is closed by the client (or a keep-alive timeout occurs) and blocks while there is nothing to read.
Perhaps I'm being stupid now, but how do I actually do this?

ejp wrote:
and also an incorrect implementation of the timeout period. This code will still wait forever if no data arrives.You're right... actually I didn't mean to put that while loop there! What I meant was simply
if (!reader.ready())
    wait(keepAliveTimeout);
if (!reader.ready())
    break mainLoop;
// If we get here there is a new request to read...and I agree that it's ugly, that's why I'm asking you guys for help!
setSoTimeout() is of course a way to go... didn't think of that although I have kind of already added it to my code but with a different timeout. Thanks!
Last question then is:
does reader.readLine() block like reader.read(), or do I have to use the latter?
I would test for myself I could, but at the moment I can't...

Changing Default "Keep Alive" & " Max Processing Time" values in SMICM

Dear Experts
As you aware the default values in SMICM --> Go to --> Services The default values "Keep Alive" & " Max Processing Time" of services like HTTP & HTTPS is 30 sec & 60 seconds respectively.
Every times when we restart application server - we are increasing the time values manually. once we restart they will be reset to original 30 & 60 sec respectively.
I want to make customozed values permanently which should not be lost even after restart of application server.
Please Help
Regards
PR

If you have not set the PROCTIMEOUT parameter, TIMEOUT (or icm/keepalive_timeout) defines both the processing timeout and the keepalive timeout. Also, as of release 6.40, the keepalive timeout is limited to a maximum of 30 seconds.
In a system where the default timeout settings of 30 seconds for the keepalive timeout and the processing timeout are not sufficient because of long-running applications, we recommend that you set the TIMEOUT and PROCTIMEOUT parameters for the relevant services so that you can configure them independently of each other. In addition, we recommend that you do not set the TIMEOUT value higher than necessary, for example, to the usual default value of 30 seconds.
We recommend, for example, the following settings:
icm/server_port_0 = PROT=HTTP,PORT=1080,TIMEOUT=30,PROCTIMEOUT=600
to allow a maximum processing time of 10 minutes.
Thanks,
Tanuj

E51 SIP and NAT keep alive

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