Maximum Cable Length

This might be a stupid question, but... Is there a limit in cable length, beyond which Airport Express is unable to deliver a strong enough signal. My cable is not that long, maybe only 15 meters or something like that.
I have Airport Express (Gigabit Ethernet) and since I'm renovating my house, I had to move AEP and computers from one room to another (with one room in between). ADSL modem stayed in the room, only AEP and computers were moved.
As I did so, my internet connection (cabled trough AEP and/or wireless) became extremly slow and unstable, uploading only few bytes per second (it took half an hour to upload 300kb file).
Scenario 1 (extremly slow):
ADSL modem --15m--> AEP --> Desktop
Then I moved AEP back, and connected desktop computer in the new room, but desktop computer is unable to connect (limited or no connectivity)
Scenario 2 (no connectivity):
ADSL modem --> AEP --15m--> Desktop
But, if I connect my desktop directly to ADSL modem, everything works just fine (but of course, I don't have wireless).
Scenario 3 (works fine):
ADSL modem --15m--> Desktop
My ADSL modem is able to auto-negotiate cable type (CrossOver or normal), so I don't think wrong cable installations might be a problem....

Hello PetLj. Welcome to the Apple Discussions!
Is there a limit in cable length, beyond which Airport Express is unable to deliver a strong enough signal.
The maximum CAT-5 Ethernet cable length would be 100m. However, cable length and wireless strength are not directly related.
However, it is very possible that you may have some form of Wi-Fi interference in the immediate area that is preventing your AirPort Express from providing a good clean signal to wireless clients.
I suggest you perform a simple site survey, using utilities like the following to determine potential areas of interference, and then, try to either eliminate or significantly reduce them where possible:
For Macs:
o KisMAC
o MacStumbler
o iStumbler, or
o IPNetMonitorX
For PCs:
o NetStumbler
o WiFi Hopper
o WiFi Owl
o WiFi Manager

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Maximum cable lengths for USB / FW / DVI & sVGA?

I've hunted around on the net and can't find any kind of definitive answer regarding maximum cable lengths for USB, Firewire 400/800 and DVI / sVGA monitors. Can anyone shed some light?
I'm about to shift my studio into a new room, and have the oppourtunity to stick my G5 and external drives into a corridor cupboard adjacent to where my studio is - in other words, noise free bliss! But....
...if I map out how far my computer monitors, keyboard and audio interface will be from the cupboard, and take into account the twists and turns involved in neat routing, I'm looking at a distance of about 10 meters. I need to know if any of these devices will be OK with such a long run of cable, and if not, if it's possible to achieve a good result using hubs or repeaters?
So, can anyone help me out with info on:
an Apogee Ensemble (Firewire 400)
an Apple keyboard (USB 2.0)
an LCD flatscreen (DVI)
and another LCD flatscreen (sVGA)
Many thanks!

I was just researching the very same thing, though it does not sound like my studio setup will be as sweet as yours. Here are a few things I ran across:
FIREWIRE-
"The maximum cable length specified by the IEEE1394 standard is 4.5 meters. However, more recent tests have shown that certain high quality firewire cables can achieve longer lengths without significantly affecting transmission quality. Several manufacturers sell firewire cables longer than 5 meters (some up to 50 meters)."
~http://www.focusrite.com/answerbase/article.php?id=206
I found an example of a company who claims to sell a firewire cable of that length:
http://www.expansys.com/pf.aspx?i=102956
USB-
There is forum discussion on the topic I was reading yesterday:
http://www.everythingusb.com/forums/showthread.php?threadid=804
But don't go past the 11th post or so, they go off on another subject... the use of hubs & the words "active extension" in that post caught my eye. A quick google search came up with this site:
http://www.everythingusb.com/forums/showthread.php?threadid=804
There were a bunch sites with devices claiming to do this.
Finally I have this chart, which seems to support what what the articles say, without of course any other extension technology/solutions:
http://www.extron.com/company/article.aspx?id=dedigform10
I'm not making any claims at all about how true these sources are, I just have the same questions and decided to toss what I've been looking at into the discussion. Feel free anyone to jump in and tell me its all wrong - I'd love to hear whats right.
~sam

Cable length limit on the so-called "Internet" port?

Is there a limit on the cable-length when connecting an Ethernet cable to the so-called "Internet" port on a WRT54G router?
I assume this is a standard 10/100 Ethernet port, since I am connecting this to the Ethernet port of my DSL modem. Since the Ethernet standard defines a maximum cable-length of 100 meters when connecting any 2 Ethernet devices, I should be able to use a cable up to this length when connecting 2 Linksys routers together.
Here is what I want to do:
DSL Modem-->Linksys Router-->Linksys Router
My first Linksys WRT54G router is connected to a DSL modem. I want to put a second WRT54G Linksys router in a different building, and connect them with a 100 meter Ethernet cable, connecting the remote end to the second router´s "Internet" port, and the other end into one of the first router´s available 10/100 ports. This will allow me to create 2 wireless signals, with 2 different DHCP scopes and 2 different SSID´s, basically allowing me to extend the range, with the 2 routers connected with a physical wire.
This works when connecting them with a short, 2 meter cable. Using a short cable I am able to associate with the second router´s SSID, get a DHCP address from that router, and then turn on RIP on both routers and have traffic route from the second router to the first one and out to the Internet successfully.
However, when I replace the short cable with a longer one, either 80 meters or 100 meters, I don´t get a link light between the routers. I do get a link light if I connect to a 10/100 port on both routers, but RIP doesn´t seem to want to exchange routes on the second router out anything other than the "Internet" port. Moving the cable back to the "Internet" port fails to produce a link light (unless I use a really short cable, which does produce a link light).
So my question is this: from a Layer-1 perspective, is the "Internet" port an Ethernet port that enforces a cable-length limit that doesn`t follow the standard 100 meter rule?
--- Christer

well..the internet port is definitely an ethernet port...however, it is not supposed to limit the cable length .. try a 50 m cable and check whether it works...because my friend had a similar kind of an issue and it worked fine with a 50 m ethernet cable ..

Maximum firewire cable length?

Hi there,
Why do firewire cables come at a 6 foot limit? I have a joiner and am able to run my firewire audio device from twice that distance. Will this cause harm?
thanks,
rwa

I guess it should still work: the reason for the cable length limit is probably that the data transfers slightly more slowly when your FireWire cable is longer than six feet.

The maximum cable distance from antenna and Cisco 1200 series.

Hello all!
I?m using the Cisco 1200 Access Points Series with two 2.2dBi dipole antennas. I have read the installation guide for that Access Points and that can be installed with the antennas in separated places. But this guide didn't mention the maximum distance for the antenna cable...
Somebody here can say me this maximum distance?
Had somebody here made this kind of antenna installation with cable?
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Oh Yeah!, I absolutely agree on "shorter is way better"
Given any chance / choice at all, I'd try to keep the cable length under 25 feet. If the option is available for a NEMA cabinet to get the cable shorter, I'd probably do that too.
Since it's good practice to use a chunk of fiber optic cabling between the external stuff and the inside network, you may as well put the AP as close to the antennas as possible and convert the copper to fiber for the long haul.
You get some lightning protection (at least you won't smoke all of the systems sitting on your LAN) and better signal strength (and probably signal quality too).
For something like a 200' run, if forced to do it (we're talking "gun to the head" forced here), I'd probably be looking for something like Andrew LDF4-50 1/2" Heliax with probably a weeeeee bit O' amp tossed in for good measure.
That would also imply that the system would also have to be re-certified, because of the non-standard components ...and a pretty good budget to boot.
Sometimes you gotta do what you gotta do.
FWIW
Scott

Ethernet cable length from route

Love this forum: After a few years of use this is the first time I haven't found an answer by searching!
Everyone seems to say that the limit of ethernet cable is 100 meters but in two apartments with different routers I have not been able to get a connection between (two different) the router and my computer over about 25 feet. I'm using a (seemingly) top of the line d-link wireless router but maybe its too weak. Can anyone suggest a router or switch that will reach 50 feet or more?
Thanks!
(P.S.) wireless is too slow to back up my iPhoto library, which I want to back up to a Linux Ubuntu PC home server.

Thanks for responding!
The iPhoto library is about 25 gigs at the moment (iTunes is another 15gigs), and can grow pretty quickly. I do have 250gig firewire drive for back up next to the computer but I feel my life of photos in that library and want a second backup in another room of the apartment. I installed Ubuntu on a Windows PC so I could use NFS sharing with the Mac (works great except for speed).
The specifications all talk about maximum theoretical lengths and none of the manufacturers discuss actual cable lengths. Everyone seems to assume that any router will do the job.
I did find an interesting post at the bottom of this:
http://discussions.hardwarecentral.com/showthread.php?t=172404
so I've order a couple of 50ft cat5e cables with factory attached jacks to see if it was my crimping color order that was at fault (which doesn't really make sense but it's the only thing I've found)
Should get them in a few days...
iMac 20" 1.8 PPC Mac OS X (10.4.8)

"Maximum Session Length in Seconds" Not Working In Apex 3.2

Hello.
I am using Apex 3.2 and have noticed that pages are session timing out after just 10 minutes of inactivity. I am aware of the new security attributes "Maximum Session Length in Seconds" and "Maximum Session Idle Time in Seconds".
I asked our Apex admin and he reported that these attributes are set to 8 hours on the instance level. Within my own Apex application, these two attributes are not set at all. According to the popup help window associated
with these attributes, if they are not set, then there is no timeout at all that is enforced.
So, does anyone know why my application pages are session timing out after just 10 minutes of inactivity and users are forced to login again?
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Elie

Scott,
Thank you for your help on this.
I've uploaded my Apex app called "Online Model", App ID 62063 in my workspace EEG on the Oracle hosted site apex.oracle.com.
Workspace = EEG
Username = [email protected]
Password = galaxy (I'll change the password after you're done helping me)
Orginally, this app had "Database Authentication" set. I changed this to "DAD Authentication" so that you can simply run it without having to login.
If I open up the app in developer mode and simply leave it alone for, say, 30 minutes and then click on the "developer bar" to see the definition of one of the pages, Apex instead prompts me to re-login again into Apex. I've not placed any values in any of the "Session Timeout" fields on any of the pages in this app.
When the same app is run as a user (that is, no "developer bar" appears at bottom of pages), again the page will time out after about 30 minutes of in-activity.
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Thank you for your help. It's much appreciated.
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SQL Loader-704: Internal error: Maximum record length must be = [10000000]

Hi,
running SQL*Loader (Release 8.1.7.2.1) causes an error "SQL*Loader-704: Internal error: Maximum record length must be <= [10000000]". This error occurs when SQLLoader is trying to load several thousand records into a database table. Each record is less than 250 bytes in length.
Any idea what could cause the problem?
Thanks in advance!
Ingo
And here's an extract from the log file generated by SQLLoader :
Number to load: ALL
Number to skip: 0
Errors allowed: 50
Bind array: 1360 rows, maximum of 10485760 bytes
Continuation: none specified
Path used: Conventional
Table "SYSTEM"."BASICPROFILE$1", loaded from every logical record.
Insert option in effect for this table: APPEND
TRAILING NULLCOLS option in effect
Column Name Position Len Term Encl Datatype
UUID FIRST * O(X07) CHARACTER
DOMAINID NEXT * O(X07) CHARACTER
LASTMODIFIED NEXT * O(X07) DATE DD/MM/YYYY HH24:MI:SS
ANNIVERSARY NEXT * O(X07) CHARACTER
BIRTHDAY NEXT * O(X07) CHARACTER
COMPANYNAME NEXT * O(X07) CHARACTER
DESCRIPTION NEXT * O(X07) CHARACTER
FIRSTNAME NEXT * O(X07) CHARACTER
COMPANYNAMETRANSCRIPTION NEXT * O(X07) CHARACTER
FIRSTNAMETRANSCRIPTION NEXT * O(X07) CHARACTER
GENDER NEXT * O(X07) CHARACTER
HOBBIES NEXT * O(X07) CHARACTER
HONORIFIC NEXT * O(X07) CHARACTER
JOBTITLE NEXT * O(X07) CHARACTER
KEYWORDS NEXT * O(X07) CHARACTER
LASTNAME NEXT * O(X07) CHARACTER
LASTNAMETRANSCRIPTION NEXT * O(X07) CHARACTER
NICKNAME NEXT * O(X07) CHARACTER
PREFERREDLOCALE NEXT * O(X07) CHARACTER
PREFERREDCURRENCY NEXT * O(X07) CHARACTER
PROFESSION NEXT * O(X07) CHARACTER
SECONDLASTNAME NEXT * O(X07) CHARACTER
SECONDNAME NEXT * O(X07) CHARACTER
SUFFIX NEXT * O(X07) CHARACTER
TITLE NEXT * O(X07) CHARACTER
CONFIRMATION NEXT * O(X07) CHARACTER
DEFAULTADDRESSID NEXT * O(X07) CHARACTER
BUSINESSPARTNERNO NEXT * O(X07) CHARACTER
TYPECODE NEXT * O(X07) CHARACTER
OCA NEXT * O(X07) CHARACTER
SQL*Loader-704: Internal error: Maximum record length must be <= [10000000]

As a second guess, the terminator changes or goes missing at some point in the data file. If you are running on *NIX, try wc -l data_file_name. This will give a count of the number of lines (delimited by CHR(10) ) that are in the file. If this is not close to the number you expected, then that is your problem.
You could also try gradually working through the data file loading 100 records, then 200, then 300 etc. to see where it starts to fail.
HTH
John

Maximum record length in internal table?

Is there a maximum record length in an internal table? Please note: My question is NOT related to table space. I'm referring only to the length of an individual record (A.K.A. row length).
I am using a work area to insert data into an internal table. Both the work area and internal table are defined by the same structure.
The structure has a total length of 672 bytes. For the sake of this discussion I'll point out that at the end of the structure, bytes 669, 670, 671, and 672 are four separate fields of 1 character each.
When viewing the work area record in the debugger I'm seeing all the fields and all the values. When viewing the internal table in the debugger after a record is inserted, the internal table ends with the field defined at Byte 670. The internal table does not include the two fields defined at Bytes 671 and 672.
Am I to assume from the above explanation that the length of a record ( A.K.A. row) in an internal table cannot exceed 670 bytes?
Thank you.

Manish,
False alarm! While, technically, you didn't answer my question, your request for code ended up helping me answer my own question.
To provide you with some code I wrote a simple test program using the record layout referred to above, with a DO loop to put some records into the internal table, followed by a LOOP AT, with accompanying WRITE statements to display the contents of the internal table and demonstrate that the last two fields weren't being stored.
However, when I ran the test program, the last two fields were being displayed.
It was at that point, when stepping through the debugger that I noticed the scroll arrows above the last column of my internal table that allowed me to scroll to the right and see my final two fields.
Apparently, because of the large number of fields in my internal table I had reached the default display length of the debugger. While I was obviously aware of the scroll bar found at the bottom of the display, I had never worked with an internal table of that width in the past and hadn't even noticed the scroll arrows above the last column before.
Thanks for taking the time to respond helping me get to the solution.

SQL Azure Reporting - There was an exception running the extensions specified in the config file. --- Maximum request length exceeded.

I am trying to deploy an RDL file (5MB) to SQL Azure Reporting server in South Central US using the deploy function in SQL Server Data Tools but facing the following error during deployment to Azure Reporting server.
"There was an exception running the extensions specified in the config file. ---> Maximum request length exceeded."
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I have tried to upload it directly to SQL Azure Reporting server from the Management Portal --> Upload Report function which still resulted in error.
Thanks & Regards, Deep

Thanks for your question. Unfortunately we are in the process of deprecating SQL Reporting services. Full details are available at http://msdn.microsoft.com/en-us/library/gg430130.aspx
Thanks Guy

ADAPTER.SOAP_EXCEPTION:Maximum request length exceeded.

Hi frnds,
Plz look for the error i am getting when sending large record...
- <SAP:Error xmlns:SAP="http://sap.com/xi/XI/Message/30" xmlns:SOAP="http://schemas.xmlsoap.org/soap/envelope/" SOAP:mustUnderstand="1">
<SAP:Category>XIAdapter</SAP:Category>
<SAP:Code area="PARSING">ADAPTER.SOAP_EXCEPTION</SAP:Code>
<SAP:P1 />
<SAP:P2 />
<SAP:P3 />
<SAP:P4 />
<SAP:AdditionalText>soap fault: System.Web.Services.Protocols.SoapException: There was an exception running the extensions specified in the config file. ---> System.Web.HttpException: Maximum request length exceeded. at System.Web.HttpRequest.GetEntireRawContent() at System.Web.HttpRequest.get_InputStream() at System.Web.Services.Protocols.SoapServerProtocol.Initialize() --- End of inner exception stack trace --- at System.Web.Services.Protocols.SoapServerProtocol.Initialize() at System.Web.Services.Protocols.ServerProtocol.SetContext(Type type, HttpContext context, HttpRequest request, HttpResponse response) at System.Web.Services.Protocols.ServerProtocolFactory.Create(Type type, HttpContext context, HttpRequest request, HttpResponse response, Boolean& abortProcessing)</SAP:AdditionalText>
<SAP:ApplicationFaultMessage namespace="" />
<SAP:Stack />
<SAP:Retry>M</SAP:Retry>
</SAP:Error>
What could be the possible solution .
Thanks,
Adhir

Hi Ahdir,
First of all check the URL in your receiver SOAP adapter. The error comes from the web service server. It says that the request message is wrong.
U have to fill field SOAPAction in the receiver soap adapter
U may find the related information here
http://help.sap.com/saphelp_nw2004s/helpdata/en/29/5bd93f130f9215e10000000a155106/content.htm
Please check this
/people/shabarish.vijayakumar/blog/2006/03/23/rfc--xi--webservice--a-complete-walkthrough-part-1
There are multiple soap actions listed there.
Regards,
Divya

Maximum statement length of 8192 Error

Hello folks. I'm using OBIEE 10.1.3.3.3 and got the following error when building a pivot table report with a large of calculated fields.
"State: HY000. Code: 10058. [NQODBC] [SQL_STATE: HY000] [nQSError: 10058] A general error has occurred. [nQSError: 59036] The resulting SQL statement exceeded the maximum statement length of 8192. (HY000)"
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Check this doc, its same for all versions of BI
Sec: A.6.8
http://docs.oracle.com/cd/E21764_01/bi.1111/e10541/configfileref.htm#CACECAFJ
Pls mark as correct if helps

Zen Xtra: USB Cable length

Does anyone know what the cable length is? Because just recently, a friend of mine bought me one, and I needed to get a PCI to USB card because my PC only supported USB .. But, I want the cable to reach up to the top of my tower at least.
Thanks.

I would measure mine, but since it's all tangled into the spaghetti of wires by my computer, i'll take a guess and say it's about 6 feet. Length enough to go from my computer up to my desk with cord to spare.

Windows service, error Maximum request length exceeded

What is causing this error, from the windows service?
There was an exception running the extensions specified in the config file. ---> Maximum request length exceeded

Hi Nick,
Per my understanding you got this error "Maximum request length exceeded" about your reporting services, right?
It seems the issue is caused by the request reach the max length.
To solve the issue, please made the changes in web.config of both the Report Server and the Report Manager:
<httpRuntime executionTimeout = "9000" maxRequestLength=" 2097151" />
If the solution above does not help, please post the error logs of the Report Server. The error logs will help us more about troubleshooting and also provide us details information about what actions you are doing when causing this error.
We can get the logs from:
<Install Driver>:\Program Files\Microsoft SQL Server\MSSQL.<X>\Reporting Services\LogFiles
Please feel free to ask, if you have any more questions.
Regards
Vicky Liu

Maximum request length exceeded

I'm trying to upload a file to mobile services .NET backend, however I'm getting the error "Maximum request length exceeded". I tried increasing the limit in web.config file, but it only worked on the local version and still throws the error when
published to Azure.
As far as I understand the mobile services is ignoring the web.config file. So is there any other way to increase the upload limit?

good news.. found a fix for this.
it's actually the same fix for file uploads that exceed the default 4mb set by IIS. however, the change needs to made to the report manager web.config file and not the report server web.config file. that's why it didn't work for me the first time.
here is an article that talks about it http://support.softartisans.com/kbview_825.aspx
if you have kept the default installation directory, the file you edit is:
C:\Program Files\Microsoft SQL Server\MSSQL.3\Reporting Services\ReportManager\Web.config
Just add the maxRequestLength property here and set a size appropriate to you. Not to large to discourage DoS attacks.
The example below is 10mb
<httpRuntime executionTimeout="9000" maxRequestLength="10240"/>
hope it helps.

Maximum Cable Length

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