Difference between Extending Network & Joining Existing Network

I am using an Extreme as my main device. I want to increase the range by using an Express in another area of the house. When I setup the "Extend an Existing Network," I get an amber light. When I then setup "Join an Existing Network," I get a green light. My confusion is, does both modes service users, or can you only connect when the Express is in Extend mode.
Also, how can I tell what Generation my devices are?

Thanks for the info.
Please download and install AirPort Utility 5.6 for Mac OS X Lion since we will need the extra features in this version of the utility to do what you want.
This version will tell you which version of the AirPort product that you have when you click on a device and look to the right for more info.
When the AirPort Express "extends a wireless network", it performs multiple functions:
Provides more wireless coverage in the area where it is located
Provides an audio signal at the audio port for AirTunes
Provides a signal for a printer at the USB port
Provides a signal at the Ethernet port for devices that connect using Ethernet
When the AirPort Express "joins a wireless network it performs all of the functions above....except....it does not provide any additional wireless coverage
Since most users need as much wireless coverage as possible, most of them configure their Express devices to "extend" a wireless network so devices will have a better signal in the more remote location.
In order to configure the Express to "extend", you must configure both the AirPort Extreme and AirPort Express
Open Macintosh HD > Applications > Utilities > AirPort Utility 5.6
Select the AirPort Extreme and click Manual Setup
Click the Wireless tab below the row of icons
Make sure that there is a check mark entered next to "Allow this network to be extended"
Click Update to save changes
Now, configure the Express again to "Extend a wireless network"
Please post on your results

Similar Messages

What's the difference between "Extend" or "Join" a wireless network?

I have a Time Capsule as my main base station and an Airport Express I'd like to use on another floor of my home for an internet connection for my Blu-ray player and to stream music via Airtunes. If I connect the Express to the Blu-ray using Ethernet and to my speakers with an audio cable, should I set up the Express to Extend or Join my network? What's the difference between "Extend" or "Join" a wireless network?

If I connect the Express to the Blu-ray using Ethernet and to my speakers with an audio cable, should I set up the Express to Extend or Join my network?
Extend.
What's the difference between "Extend" or "Join" a wireless network?
When you configure the AirPort Express Base Station (AX) to "join an existing wireless network" it will perform like any other wireless client (laptop, printer, etc.) that connects to that wireless network. It will NOT perform as a router nor extend the wireless range of (in this case) the Time Capsule (TC).
However, if you configure the AX to "extend a wireless network" it will perform as an additional wireless access point to your TC's wireless network, effectively extending the TC's wireless range. In addition, the AX's Ethernet port will also be enabled and you can connect a single Ethernet client or multiple ones if you connect an Ethernet switch instead.

Difference between new network and extended network

Difference between extended network and new network settings

An "extended" network acts as one large wireless network. Wireless devices can roam anywhere a signal is present and stay on the network without having to make any changes.
A "new" network will require that a wireless device manually "switch" to that network and enter the password for the network to connect whenever you want to use that network. In other words, a "new" network will use a different wireless network name and password, which will require that you manually log on to that network.
The exception would be if you created a "new" wireless network and used the same wireless network name, same wireless security settings and same password as the "main" network and connected the AirPort back to the main router using an Ethernet cable. In that case, you would have an "Ethernet extended wireless" network.

The Difference between Extending a Wireless network and WDS?

I have an Extreme (n) and an Express (n).
I want to make sure the signal is strong upstairs and share a printer (connected to the express) and use AirTunes. I also may add an external drive to the Extreme.
What's the difference between Extending a Wireless Network and using WDS? Will there be a speed difference?
Message was edited by: J. Christopher Edwards

I think you don't get it
If I have another draft N router that operates at 2.4G and I have only n devices I can still use WDS and it will connect using draft n in the 2.4G band.
If one g device connects to the network will go in mixed mode.
The AEBS will still report 130 Mbps for your n clients and 54 for your g clients.
If the other router is g only obviously you can't connect between the two router at n mode but still the AEBS will be in mixed mode and not in g. The Extreme will still report 130 Mbps for the connected n clients.
I can tell you that because I have actually implemented it am not taking off the documentation.
The same device if I try to use the "extend n network" does not even see the AEBS but will happily keep the n in the WDS mode and though the bandwidth is halved it is still more than g.
In any case enough for this!

Difference between extends and implements

hi
i am new to java. i need to know the difference between extends class implement class.
can anybody explain in simple words? i am new too oops concept also?
what are the conditions to use extends class, implement and interface?
class b extends a implements c
i know class a is a super class and class b is a sub class.
if class b extends class a means how should be the class a, what about the methods?
and class a implements class c means what should be the conditions?
i searched in Internet but the explanation is not very to me.can body explain me please?
thank you

sarcasteak wrote:
Your class can implement an interface, which means it must use the methods defined in the interface.No, it doesn't need to use them. It needs to implement them. Or be declared abstract.
Note that the methods in the interface are empty,No, they're not. They're abstract.
// empty method
void foo() {}
// abstract method
abstract void foo();(The abstract keyword is optional for interface methods, since they're all abstract.
and you have to define what they do in your class that implements the interface.Just like they have to for abstract methods in a class you extend, if the child class is not declared abstract.
There really isn't any difference between "extends" and "implements." There is no situation where you can choose. Any case where one is legal, only that one is legal. They could just as easily be a single keyword.
Presumably the OP's real question is, "When do I use a class for a supertype vs. using an interface for a supertype?" The answer to that, of course, is:
Use a class when at least some of the methods have valid default implementations. Use an interface when that is not the case. And of course the two are not mutually exclusive. It's quite common to do both.
At the end of the day, an interface is really nothing more than a class that has no non-final or non-static member variables and whose instance methods are all abstract, and from which you can multiply inherit.
Edited by: jverd on Feb 4, 2010 1:56 PM

Differences in Extending Network Options?

Hi,
I just recently purchased an Airport Express base station to extend the range of my existing Airport Extreme wireless network. I am a little confused by the options available for extending the network, and I am hoping that someone can explain the differences.
1. When I setup the Airport Express, I noticed that I could join my existing wireless network under the Airport:Airport Network:Wireless Mode section of the Airport Express base station configuration panel. When I did this, both base stations showed up under the same wireless network;
2. When I setup the Airport Express, I noticed that I could extend my existing wireless network as a wireless distribution system (WDS). I could then set-up the Airport Express as a remote base station or as a relay station. When I enabled the Airport Express as a remote base station, both base stations showed up under the same wireless network.
So, my question is really this:
1. If I have my Airport Express base station join the existing network as I described in setup 1, how does it act on the network?
2. If I have my Airport Express base station join the existing network as a remote station in a WDS, how does it act on the network?
3. If I have my Airport Express base station join the existing network as a relay station in a WDS, how does it act on the network?
4. What's the difference between a remote base station and a relay station?
Thanks for your help in advance.
Glenn

1. If I have my Airport Express base station join the existing network as I described in setup 1, how does it act on the network?
The AirPort Express (AX) joins as just another 802.11b/g wireless client. It provides wireless printing and wireless music streaming. It does NOT extend the wireless network.
2. If I have my Airport Express base station join the existing network as a remote station in a WDS, how does it act on the network?
The AX provides wireless printing and wireless music streaming. The AX extends the wireless network to wireless clients.
3. If I have my Airport Express base station join the existing network as a relay station in a WDS, how does it act on the network?
The AX provides wireless printing and wireless music streaming. The AX extends the wireless network to wireless clients and to other base stations supporting WDS.
4. What's the difference between a remote base station and a relay station?
A remote provides a wireless network to clients only. A relay provides a wireless network to clients and other WDS capable base stations.

DIFFERENCE BETWEEN EXTENDED WITH HOLDING AND CLASSIC WITHHOLDING TAX

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HI
What is the difference between classic with holding tax and extended with holding tax ...
teja.k

Check this site.......
http://help.sap.com/saphelp_erp2004/helpdata/en/2d/936b3ae886616ae10000000a114084/content.htm

Performance difference between left outer join / inner join

Hi,
I've got a complex query which among other things accesses quite a large table. If I use inner join to join this table, the response is quite fast and execution plan shows it uses nested loops to gather the data.
If I change inner join to left outer join, I get a big performance drop. Cost of query goes from 1441 to 28544.
I don't uderstand why there's such a difference. For inner join, database has to remove all the rows that don't have match in inner-joined table. For left join it can keep all records and just return NULL values for records that don't have a match. In my mind left join should be faster, as it seems simpler. And the access plan could be the same, couldn't it?
Execution plan for inner join:
| Id | Operation | Name | Rows | Bytes | Cost (%CPU)| Time |
| 0 | SELECT STATEMENT | | 1 | 288 | 1441 (1)| 00:00:18 |
| 1 | HASH GROUP BY | | 1 | 288 | 1441 (1)| 00:00:18 |
| 2 | NESTED LOOPS OUTER | | 1 | 288 | 1440 (1)| 00:00:18 |
| 3 | NESTED LOOPS | | 1 | 261 | 1438 (1)| 00:00:18 |
| 4 | NESTED LOOPS | | 318 | 74412 | 508 (1)| 00:00:07 |
| 5 | NESTED LOOPS | | 318 | 51834 | 189 (0)| 00:00:03 |
| 6 | TABLE ACCESS BY INDEX ROWID| RESURCE | 1 | 106 | 1 (0)| 00:00:01 |
|* 7 | INDEX UNIQUE SCAN | RESURCE_PRINCIPAL_NAME_INDEX | 1 | | 0 (0)| 00:00:01 |
| 8 | TABLE ACCESS BY INDEX ROWID| TASK_USES_RESURCE | 318 | 18126 | 188 (0)| 00:00:03 |
|* 9 | INDEX RANGE SCAN | TASK_USES_RESUR_IDX$$_0CDC0002 | 318 | | 3 (0)| 00:00:01 |
| 10 | TABLE ACCESS BY INDEX ROWID | TASK | 1 | 71 | 1 (0)| 00:00:01 |
|* 11 | INDEX UNIQUE SCAN | TASK_PK | 1 | | 0 (0)| 00:00:01 |
| 12 | TABLE ACCESS BY INDEX ROWID | TASK_WORK_HISTORY | 1 | 27 | 3 (0)| 00:00:01 |
|* 13 | INDEX RANGE SCAN | TASK_WORK_HISTORY_INDEX1 | 1 | | 2 (0)| 00:00:01 |
| 14 | TABLE ACCESS BY INDEX ROWID | TASK_USES_RESURCE | 1 | 27 | 2 (0)| 00:00:01 |
|* 15 | INDEX UNIQUE SCAN | TASK_USES_RESURCE_UK1 | 1 | | 1 (0)| 00:00:01 |
For left outer join:
| Id | Operation | Name | Rows | Bytes |TempSpc| Cost (%CPU)| Time |
| 0 | SELECT STATEMENT | | 318 | 1596K| | 28544 (2)| 00:05:43 |
|* 1 | HASH JOIN OUTER | | 318 | 1596K| 1584K| 28544 (2)| 00:05:43 |
| 2 | VIEW | | 318 | 1580K| | 508 (1)| 00:00:07 |
| 3 | NESTED LOOPS | | 318 | 74412 | | 508 (1)| 00:00:07 |
| 4 | NESTED LOOPS | | 318 | 51834 | | 189 (0)| 00:00:03 |
| 5 | TABLE ACCESS BY INDEX ROWID| RESURCE | 1 | 106 | | 1 (0)| 00:00:01 |
|* 6 | INDEX UNIQUE SCAN | RESURCE_PRINCIPAL_NAME_INDEX | 1 | | | 0 (0)| 00:00:01 |
| 7 | TABLE ACCESS BY INDEX ROWID| TASK_USES_RESURCE | 318 | 18126 | | 188 (0)| 00:00:03 |
|* 8 | INDEX RANGE SCAN | TASK_USES_RESUR_IDX$$_0CDC0002 | 318 | | | 3 (0)| 00:00:01 |
| 9 | TABLE ACCESS BY INDEX ROWID | TASK | 1 | 71 | | 1 (0)| 00:00:01 |
|* 10 | INDEX UNIQUE SCAN | TASK_PK | 1 | | | 0 (0)| 00:00:01 |
| 11 | VIEW | | 1480K| 73M| | 23431 (2)| 00:04:42 |
|* 12 | HASH JOIN RIGHT OUTER | | 1480K| 76M| 38M| 23431 (2)| 00:04:42 |
| 13 | TABLE ACCESS FULL | TASK_USES_RESURCE | 1486K| 21M| | 2938 (2)| 00:00:36 |
| 14 | VIEW | | 1445K| 53M| | 15031 (2)| 00:03:01 |
| 15 | HASH GROUP BY | | 1445K| 37M| 110M| 15031 (2)| 00:03:01 |
| 16 | TABLE ACCESS FULL | TASK_WORK_HISTORY | 1445K| 37M| | 3897 (2)| 00:00:47 |
--------------------------------------------------------------------------------------------------------------------------

...continued
Complete execution plan for left join:
| Id | Operation                       | Name                           | Rows | Bytes |TempSpc| Cost (%CPU)| Time     |
|   0 | SELECT STATEMENT                |                                |   318 | 1594K|       | 28544   (2)| 00:05:43 |
|* 1 | HASH JOIN OUTER                |                                |   318 | 1594K| 1584K| 28544   (2)| 00:05:43 |
|   2 |   VIEW                          |                                |   318 | 1578K|       |   508   (1)| 00:00:07 |
|   3 |    NESTED LOOPS                 |                                |   318 | 74412 |       |   508   (1)| 00:00:07 |
|   4 |     NESTED LOOPS                |                                |   318 | 51834 |       |   189   (0)| 00:00:03 |
|   5 |      TABLE ACCESS BY INDEX ROWID| RESURCE                        |     1 |   106 |       |     1   (0)| 00:00:01 |
|* 6 |       INDEX UNIQUE SCAN         | RESURCE_PRINCIPAL_NAME_INDEX   |     1 |       |       |     0   (0)| 00:00:01 |
|   7 |      TABLE ACCESS BY INDEX ROWID| TASK_USES_RESURCE              |   318 | 18126 |       |   188   (0)| 00:00:03 |
|* 8 |       INDEX RANGE SCAN          | TASK_USES_RESUR_IDX$$_0CDC0002 |   318 |       |       |     3   (0)| 00:00:01 |
|   9 |     TABLE ACCESS BY INDEX ROWID | TASK                           |     1 |    71 |       |     1   (0)| 00:00:01 |
|* 10 |      INDEX UNIQUE SCAN          | TASK_PK                        |     1 |       |       |     0   (0)| 00:00:01 |
| 11 |   VIEW                          |                                | 1480K|    73M|       | 23431   (2)| 00:04:42 |
|* 12 |    HASH JOIN RIGHT OUTER        |                                | 1480K|    76M|    38M| 23431   (2)| 00:04:42 |
| 13 |     TABLE ACCESS FULL           | TASK_USES_RESURCE              | 1486K|    21M|       | 2938   (2)| 00:00:36 |
| 14 |     VIEW                        |                                | 1445K|    53M|       | 15031   (2)| 00:03:01 |
| 15 |      HASH GROUP BY              |                                | 1445K|    37M|   110M| 15031   (2)| 00:03:01 |
| 16 |       TABLE ACCESS FULL         | TASK_WORK_HISTORY              | 1445K|    37M|       | 3897   (2)| 00:00:47 |
Query Block Name / Object Alias (identified by operation id):
   1 - SEL$1AFB0324
   2 - SEL$58A6D7F6 / from$_subquery$_005@SEL$8
   3 - SEL$58A6D7F6
   5 - SEL$58A6D7F6 / RESURCEWORKER@SEL$2
   6 - SEL$58A6D7F6 / RESURCEWORKER@SEL$2
   7 - SEL$58A6D7F6 / TASKUSESRESURCE@SEL$1
   8 - SEL$58A6D7F6 / TASKUSESRESURCE@SEL$1
   9 - SEL$58A6D7F6 / TASK@SEL$1
10 - SEL$58A6D7F6 / TASK@SEL$1
11 - SEL$7EBCC247 / TRW@SEL$3
12 - SEL$7EBCC247
13 - SEL$7EBCC247 / TUR@SEL$4
14 - SEL$6        / TRW_IN@SEL$5
15 - SEL$6
16 - SEL$6        / TWH@SEL$6
Predicate Information (identified by operation id):
   1 - access("TRW"."RESURCE_ID"(+)="TASKUSESRESURCE"."RESURCE_ID" AND "TRW"."TASK_ID"(+)="TASK"."ID")
   6 - access("RESURCEWORKER"."USER_PRINCIPAL_NAME"=U'jernej')
   8 - access("TASKUSESRESURCE"."RESURCE_ID"="RESURCEWORKER"."ID")
10 - access("TASKUSESRESURCE"."TASK_ID"="TASK"."ID")
12 - access("TUR"."RESURCE_ID"(+)="TRW_IN"."RESURCE_ID" AND "TUR"."TASK_ID"(+)="TRW_IN"."TASK_ID")                                                                                                                                                                                                         Jonathan, I've been to one of your workshops in Ljubljana. I'm still trying to understand everything you explained and use it, but there's much I have to learn and understand.
The way I see this query it should fist join and filter the first three tables and only then join the trw subquery. The problem with this subqrey is task_work_history table, which is accessed in very different ways in different places, so there will always be many reads to gather required data. For now, however, I'd be hapy to just bring the performance of inner join to left join...

Difference between "extend" and participate"?

I have two Airport Extremes and a Time Capsule. One Extreme is in my home office, which is in the basement at the far corner of an "L" shaped house. The TC sits upstairs, midway through the house, and the other Extreme is at the distant end of the house (with an Apple TV plugged into it). Set up this way, I get good signals for laptops etc. throughout the house.
I just noticed in checking in Airport Utility that the Time Capsule is set up to join a wireless network and the distant Extreme is set up to extend a wireless network. (The Extreme in my office is set up to allow the network to be extended.) I guess I'm not sure what the difference is between joining and extending, and whether this setup is optimal or not. Any thoughts? Thanks.

+In my old setup, there was an option to simply "join" the network, which I guess is really all I want to do. Not sure it makes a difference in reality, but I'm wondering why that option is no longer there. Any idea?+
If you hold down the "option" key on your computer, you may see the "join" option. But, "join" on an AirPort Extreme really does nothing useful. I'm not sure it even works, but even if it did, the ethernet ports are not active in this setting and the device will not "extend a wireless network" in the "join" setting. I can't think of a reason why anyone would want to use this setting. My guess is that is why Apple "hid" the "join" setting.
+(As an aside, I am assuming that these new dual-band Airport Extremes have solved the issue of "g" devices slowing down the network when they join... I assume that is the point of the dual-band gear.... am I correct?)+
Yes, this is correct. Faster devices work on one band and slower on another and the slower devices do not slow down the faster devices.

JSP - difference between extending class and importing class

In the following scenario
class A
private static String con;
Case 1
==========
class B extends A
Case 2
===========
import A;
class C
A objA = new A;
What will be the difference in Case 1 and Case 2 on accessing the variable con.
thanx
Venki

>
If i am not wrong, the above line should be private
static variables are not inherited.
NO, AFAIK, static variables, private or otherwise arent inherited. Please note that doesnt mean, its not available in the sub-class. Infact it is. However you cannot override or hide them ie polymorphism isnt applicable to static members which is what , IMO, inheritance is all about. Its logical, when you think about it, polymorphism is applicable for objects and static is a class thinggy, has nothing to do with objects.
cheers,
ram.

Whats the difference between extending the xls mapper functions and xpath

What is the whole deal about extending the xlst mapper functions or the xpath functions?
any insight about the diferences would be greatly appreciated. I mena shouldnt the functions for xlst be the sames that are available for xpath?
regards,
gabs

Unfortunately, XPath and XSL are two different standards, and the implementation of functions at the Java level uses a different interface. So a custom XPath function is not automatically reusable in XSL and vice versa.
The core java code might be the same, but you need to code different "wrappers" for XPath and XSL.
Marc

Difference between Extend and Implement

Hello guys, I still dont get it, i'm confuse, when to use Extend and when to use Implement . What's the big diference? Can anyone give me an idea?

I keep getting an error with this class which states: "Type parameter RectangleOperand is not within it's bounds"
import java.util.*;
public class RectangleOperand extends Rectangle2D.Double implements Addable<RectangleOperand>
    public RectangleOperand (double w, double h)
       super(0.0,0.0,w,h);
public static RectangleOperand readRectangle(Scanner scan)
    double doubleValue;
    doubleValue = scan.nextDouble();
    RectangleOperand rectangle;
    return rectangle = new RectangleOperand(w,h);
public boolean equalTo(RectangleOperand opnd2)
     boolean equal = true;
     if(this.width == opnd2.width && this.height == opnd2.height)
         equal = true;
     else
         equal = false;
     return equal;
public RectangleOperand plus(RectangleOperand opnd2)
     double newWidth, newHeight, width, height;
     newWidth = (this.width) + (opnd2.width);
     newHeight = (this.height) + (opnd2.height);
     RectangleOperand rectanglePlus = new RectangleOperand(newWidth,newHeight);
     return rectanglePlus;
}

Extend Network Vs WDS

What’s the difference between extend Network and setting up a DWS?

What is not correct? You may not have understood the question nor my answer.
It is certainly true that WDS is used to wireless extend a network.
However the newer "extend network" feature offered in AirPort Utility is ONLY available when using 802.11n base stations. It is NOT an option when using 802.11g.
WDS and "extend network" are 2 different options available in different situations. Either of these options perform the action of wirelessly extending a network.

Difference between cellular/voice network and data network?

Hey guys, so I'm trying to learn this, any help would be greatly appreciated.
What is the difference between cellular networks (I assume voice calls) and data networks (sending and recieving data, like using apps, etc.) for each of the different carriers?
I tried researching this up, but with absolutely no luck. Any help towards understanding cellular networks and the difference if any between it and data networks would be helpful! If you can point me in the right direction, it would help too!
Also, in the presence of a voice network but no data network, can data still be transmitted? Any values for speed for the major carriers?

Try "Cellular voice vs data" as a Google search.
From that search, this article should help:
iOS: Understanding cellular data networks - Support - Apple

Extending network via airport extreme N non dual band and airport expresses

I have experimented with this a lot because I have 3 expresses and an extreme, one express is wired to my extreme in bridged G mode so my iphone can access my network of macs and the rest are running in N 2.4ghz joined to the extreme network as apposed to extending the network. It seemed to me that the 5ghz is much faster but has very poor range about half the range of the N so I run the network in 2.4ghz. Oddly the express I have bridged running in G mode seems to have more range than the N network. Whenever I tried to extend the network with an express in N 2.4ghz my performance went down and I could not really notice any difference in range. Perhaps this has changed with firmware updates of late so I am going to play with them some more. A side note is that when the express is in join mode to my extremes N 2.4 ghz network I can stream full HD video 1080i and 5.1 sound to my other macs. So when my MBP is hooked up to my AV
setup I can stream Eyetv recordings around the house. But when I extend the network the playback is choppy. It seems when you extend the data rate takes a dive. The odd thing to me is that it seems that the N network does not have any more range that the G express if not even a little less range. My extreme and bridged express are in the same place in my house and if I go outside on my deck there is no N and there is a little G and again if I extend the N network with an express it seems to make almost no difference in range and the transfer speeds seems to drop.
Any thoughts on how to improved N speed / range in extend mode would be appreciated.

The ethernet port is active with this settting, (assuming you enable it in AirPort Utility) which can be a plus in some installations, but I see no improvement in the "breadth" of the wireless network using the "Join" setting, at least when comparing it to the "extend" setting. Is this correct?
The AXn's feature to join a wireless network & have its Ethernet port enabled, as you already know, is known as ProxySTA.
Although a convenient feature indeed, it's not stellar as far as maximum bandwidth goes. As an example, the following would be typical "real life" throughput values (for the AXn's 2.4 GHz radio) based on the AXn's configuration:
o Router: Wired-to-wireless: 85 Mbps
o WDS: Wireless-to-wireless: 33-39 Mbps (Note: Extended would be closer to the Router value)
o ProxySTA: Wireless-to-wired: 26-35 Mbps
Unfortunately, ProxySTA is the "worst" of the bunch.
I have to believe that a lot of the confusion between "join" and "extend" is occurring because the "extend" option is not available in the auto setup using AirPort Utility. Aren't there a lot of users out there configured to "Join" when they think they are "extending"?
No doubt the "Manual Setup" function of the AirPort Utility still needs a bit of improvement as it does tend to confuse folks. Similar, would be the differences between "Extend" & a "WDS" as both are types of WDS.

Difference between Extending Network & Joining Existing Network

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