Some design help needed

Hi all. First up, thanks for reading. The problem:
Im currently doing a project to reflect the the difficulties involved in a large communications network (IE a mobile phone one)
For the UI, I have a canvas class to reflect the world that the agents (users) and Base Stations (Nodes) are in. The agents and Nodes both have seperate classes Essentially, each base station needs to pick up any agents with in a certain distance (radar)
Just wondering what would the easiest way for the nodes to pick up the agents on the canvas?
Here is a screen shot (you'll have to expand it to get the best resoulution
http://www.cs.ucc.ie/~ood1/project.bmp
if People need to see the code, just ask, and i'll put it up.
Thanks in advance

so basically your saying that have each tower
get the distance to each agent and then ifs
its in the radius of that tower, pick it up?
would this be considered cheating? Consider the real
world (which I have to accuratly reflect....:( ) If
you have a mobile 10 miles away from a Tower who has
a radius of 5 miles, it wont pick you up, its not
even aware of you.
m thinking that I'll have to use some setBounds on
the towers, and iterate through each xy position in
the bounds and if another component is found, it is
in range....
ah hell, im just gonna cheat..Thanks guys
Message was edited by: User
ChopsCheating? this sin't cheating at all. it's a program, not the real world. It would be "cheating" if you didn't do this.

Similar Messages

Need some design help

Well "overall" design help. This project MUST be open source so it does ensure i am very efficent in my design
Basically my system is going to be a bunch of work stations that tunnel into a server to send the data.
Now the big issue is, each work station must encrypt its own data and save it on its HD, but it must send data to the server for the server to save it and encrypt it (redundency).
The big issue is sending data to the server. the keys, how do i securely send them to the server so they can decrypt the stream? everything will randomly generate its key whenever the user (or the system) decides it is time to for the sake of not resuing keys.
basically we are going to use linux, lock down all ports but one to use sockets to communicate with the server (and vice versa). this adds an extra layer just so we can authenticate with the server machine (and client machines when the server sends it a request)
help? more info needed?

I know (next to) nothing about system security (well,
not enough to be advising people, anyway) - but the
key distribution problem is typically solved by using
Public Key Cryptography to exchange a Session Key.
Have you thought about using an existing system like
SSL or Kerberos?eh SSL won't really work... i a mgoing to pick up "Cryptography Decrypted" apparently it is a good book to pick up some of the things i need

Some urgent help needed with MobileMe suddenly saying my password is wrong

Hi
First of all I want to say sorry if this is in the wrong forum, but I needed some urgent help and I couldn't find a forum other than this that might relate to this issue.
The issue that I am having is with my MobileMe Account. I was on my Mac, when when my MobileMe Account suddenly dropped its connection and told me that I had entered the wrong username or password (I know I hadn't) I tried to re-enter them but every time I try I just get a message that says I have entered the wrong username or password. I no longer have access to my Mail, I can not sing-in to MobileMe to access my online account and it wont let me change the password because it keeps saying that safari can not open the page.
I can not sign-in to my MobileMe folders on my Mac and it wont sync. I was signed in perfectly fine before this happened so I know its nothing to-do with my password or user name.
I am now locked out of MobileMe and need some help as to what might have went wrong
Can someone please give me some quick help as this is really worrying me as I am afraid my MobileMe account might of been hacked (that is the kind of behaviour that I am seeing - saying that my username and password are wrong, when they are not, and not letting me sign in to change them)
Huge thanks

Ughhh,
it seems my panic was for nothing. I just ran apple 24 hour support and they put it right for me it cost me but I'd rather be safe and pay then loose all the information I have on MobileMe. This has taught me a lesson anyway, I need to keep a backup of everything and not just rely on time machine

Design Help Needed Desprately

Okay... I am trying to solve this problem but no ideas are popping into my head. I will explain my current design and if anyone has any solutions please let me know. The design may need to be reworked.
Currently I have an index.html page split in 3 (A left and right, but the left frame has a top and bottom)
The left top frame has input boxes. I am sending that information to a servlet that creates a webpage to go into the bottom box.
Based on the information that the servlet recieves I also want to update the bottom left with an image dynamically.
Any ideas.... Should I use JSP in anyway ?
Thanks in advance.

Use javascript to tell the bottom frame to reload,
getting the new imageOkay, someone at work told me this method... something like including the javascript inside the onload= of the HTML body tag of the right frame.. so when it loads the bottom left will reload. Can the bottom left page by a static HTML page, if so how will I change the picture. If I make it a jsp page or something I can just share a variable with the servlet ?

Adobe Lightroom 4 - Some Questions / Help Needed

Hi everyone.
After advice from several experts, I've just purchased Adobe Lightroom 4. I've already got Photoshop CS5, but I was looking for something proper to organise my photos, plus I found Lightroom easier to do the sort of editing I am wanting to do. Now, I only really use photoshop for things like colour pops, or really in-depth editing. Anyway, I'm loving Lightroom so far, but there is some stuff I'm not very sure of, so I'd appreciate some help
1. Organising
Firstly, I'm not really sure how to organise. At the moment, I've just got lots of folders with random events in My Pictures on W7, so I might have a folder called April 11, which contains photos from that month but that might have been a wedding or an easter holiday or both. So it doesn't really work. \
I understand in Lightroom what catalogs are. But I know enough to know that I don't want to group mine into those, its getting too complicated. What I don't know though is the difference between a collection and a folder. Basically, I'm wanting to reimport and reorganise all my photos, so I want to put them into "events" as such like you can do on iPhoto on a mac, so I would have "France Summer Holiday 11" for example, or "Mia's Wedding". I'm not really sure on the best way to do this ...?
2. Editing
I've played around quite a bit so far, and I really like what I've seen. On a lot of photos, I've made a lot of changes. But from what I can see, these changes are stored merely in Lightroom itself. For example, at the moment I'm importing photos from my external disk into Lightroom, which then saves them in C://My Pictures/Lightroom/Pictures . When I go look at these photos in windows explorer which I know I have edited, it doesn't show any of the changes or editing I've done on them. Now I realise this is me being stupid, but why doesn't it? Supposing I then want to email that photo to a friend that I have edited? How would I do that? I don't want to have to open lightroom and export every single photo I edit? There must be a simpler way?
Likewise for backing up, because all my files are in subfolders within C:// My pictures / Lightroom / Pictures, to back up I was simply going to set up windows to copy that latter folder onto my external HDD everytime I plugged it in. This would be pointless however if it isn't physically overwriting the original photo with my edited version?
3. Editing 2
Something else I like to do is make lots of different edits to the same photo. For example, at the moment I'm editing a photo of a pier at night. I spent ages adjusting colours and lighting and so on, and now it looks great. But I would also like to save a copy of that photo with the "old age photo" effect preset on. Is this possible? and how do I do it? Other than obviously importing a duplicate?
4. & 5. & 6 - Misc:
4. Simple question - how do I add tags, keywords or comments if I haven't done it on import?
5. My camera doesn't have built in GPS. Is it possible for me to manually geotag photos (in a batch, say for a Summer Holiday to NY), could I manually add a geotag for all these photos?
6. I also forgot to add copyright information on import for some, is it possible to do this after import and how?
7. I normally shoot in JPEG. I probably shoot shoot in RAW as everyone tells me to do so. Are there any significant advantages in terms of quality, and for editing with?
Thanks for any help given. I appreciate this is a lot of questions, but I could really use the advice.

Hi William,
1. Organising
Firstly, I'm not really sure how to organise. At the moment, I've just got lots of folders with random events in My Pictures on W7, so I might have a folder called April 11, which contains photos from that month but that might have been a wedding or an easter holiday or both. So it doesn't really work. \
I understand in Lightroom what catalogs are. But I know enough to know that I don't want to group mine into those, its getting too complicated. What I don't know though is the difference between a collection and a folder. Basically, I'm wanting to reimport and reorganise all my photos, so I want to put them into "events" as such like you can do on iPhoto on a mac, so I would have "France Summer Holiday 11" for example, or "Mia's Wedding". I'm not really sure on the best way to do this ...?
I am not so sure if you understand *catalogs*.
You need a catalog, exactly 1 in my opinion. A catalog is a database. The Lightroom database, where records about your images are stored, including the pointers to your images, which are not inside a catalog! LR backups just does the backup of the catalog (i.e. a file ending .lrcat). You need to take care separately that your real images are backed up !
Inside your LR database the best way to organize is via collections - this will give you what you want with "France summer holiday 11" etc.
Folders are relatively unimportant, just storage buckets. They should be *handy portions*, I would prefer them with below 3000 images each, as there currently some bugs to those bigger ones.
Before you start with LR, you can organize your pictures in Mac Finder / WindowsExplorer.
Or you could do it with the help of LR, by copying your images over during import into the destination folders (and deleting today's folders afterwards after having verified that everything is fine).
A simple date-based structure will do, I'd recommend a root parent folder like "LR images", underneath one folder per year (\2010\, \2011\, \2012\...) and underneath them either
just one folder per month (LR can auto-create them for you)
or you create the folders in import dialog as e.g. "YYYY-MM-DD description of shoot", to have a mini-diary overview also in your OS.
Apart from that you create collections, either *dumb ones*, where you drag images into, or smart ones, where you specify criteria according to which they get auto-filled.
2. Editing
I've played around quite a bit so far, and I really like what I've seen. On a lot of photos, I've made a lot of changes. But from what I can see, these changes are stored merely in Lightroom itself. For example, at the moment I'm importing photos from my external disk into Lightroom, which then saves them in C://My Pictures/Lightroom/Pictures . When I go look at these photos in windows explorer which I know I have edited, it doesn't show any of the changes or editing I've done on them. Now I realise this is me being stupid, but why doesn't it? Supposing I then want to email that photo to a friend that I have edited? How would I do that? I don't want to have to open lightroom and export every single photo I edit? There must be a simpler way?
Likewise for backing up, because all my files are in subfolders within C:// My pictures / Lightroom / Pictures, to back up I was simply going to set up windows to copy that latter folder onto my external HDD everytime I plugged it in. This would be pointless however if it isn't physically overwriting the original photo with my edited version?
LR will never overwrite your original photos.
You can save most of the catalog content into the xmp-part of the original photo, which is either a sidecar-file (.xmp) or part of the file format, like for DNG, TIFF, PSD, JPG. To do so you select the image in LR and hit <ctrl> s. Or you set it up for continuous update, which creates a lot of operations while you play back and forth in develop.
I do that on my own, typically twice per file: once I am done with develop, once I am done with keywording and other metadata update.
LR contains records about your images, i.e. a set of instructions how they are to be interpreted. That is all.
So of course you need LR to export the result of these instructions, which is actually pretty quick.
To backup your images you need to do that just once, plus you backup your LR catalog. Or if you save xmp to the files, you can do another backup once xmp is ready.
I would not consider this pointless. You just have to think that there are 2 places with data for your images: the images themselves and a database with interpretation instructions.
3. Editing 2
Something else I like to do is make lots of different edits to the same photo. For example, at the moment I'm editing a photo of a pier at night. I spent ages adjusting colours and lighting and so on, and now it looks great. But I would also like to save a copy of that photo with the "old age photo" effect preset on. Is this possible? and how do I do it? Other than obviously importing a duplicate?
Yes, this is one of LR's beauties: you create a so-called *virtual copy*, which is just a 2nd record for the same original image file with different interpretation settings, like black-and-white, a different crop size, different development etc. You can have as many virtual copies as you like, and you'll see them as additional thumbnails.
Virtual copies are not saveable into xmp, though. There is another concept which is saveable into xmp: snapshots. but these are different states in develop history, and you do not see outside develop module that you have several.
If you export virtual copies e.g. to jpg one file per virutal copy will be created.
4. & 5. & 6 - Misc:
4. Simple question - how do I add tags, keywords or comments if I haven't done it on import?
5. My camera doesn't have built in GPS. Is it possible for me to manually geotag photos (in a batch, say for a Summer Holiday to NY), could I manually add a geotag for all these photos?
6. I also forgot to add copyright information on import for some, is it possible to do this after import and how?
7. I normally shoot in JPEG. I probably shoot shoot in RAW as everyone tells me to do so. Are there any significant advantages in terms of quality, and for editing with?
Thanks for any help given. I appreciate this is a lot of questions, but I could really use the advice.
ad 4: you use the library module, metadata panel to enter.
ad 5: you use the map module. Either you manually drop your images on a map, or you have a separate GPS track to load and have LR assign via matching time-stamps.
ad 6: like 4
ad 7: You don't need JPG from your camera, you can achieve better results viy LR from RAW. Yes, there are significant advantages as to editing headroom.
Overall, may I suggest my favorite learning material for LR? First watch Julieanne's Tutorial Videos.
Then go play and use Victoria Bampton's eBook or paper copy of her "Missing FAQs to LR4": http://www.lightroomqueen.com/books/adobe-lightroom-4-missing-faq/
Have fun,
Cornelia

WAAS Design Help Needed - URGENT!

Hi,
I am currently designing and implementing a WAAS solution for s client in their Data Center. It is deployment of a single Accelerator and one CM.
It has been decided that the WAAS accelerator (7341) will have its two NICs connected to two of their core switches (both 6500). The two core switches have a Layer 3 Etherchannel link between them and are running OSPF for network convergence (i.e. Layer 2 connectivity is not used).
I am facing a problem in the design, since I know that the Active/Standby configuration for the accelerator would require a redundant gateway via HSRP (at least) but this is not possible in a routed environment in the core switches. Furthermore, I am to run WCCPv2 for redirection.
Therefore, I am confused as to how to proceed in such a case considering that I can only configure one default gateway on the accelerator when I need high availability on two different subnets.
Please assist at your earliest.
Thanks.

Amir,
Considering your question below
"I am facing a problem in the design, since I know that the Active/Standby configuration for the accelerator would require a redundant gateway via HSRP (at least) but this is not possible in a routed environment in the core switches. Furthermore, I am to run WCCPv2 for redirection."
Do WAE is configured for Standby interface and is this your Primary Interface as well? If answer is yes then see below
You will need a common VLAN for WAAS on both 65K swicthes in order for Active / Standby interface to work properly.
1: When using OSPF make sure your tcp flows has both ingress and egress flows transit from same switch
2: Use Generic GRE method for Egress under WAAS intercept configuration.
Since you are running WCCP each swicth will be able to redirect its TCP traffic via GRE Tunnel to WAAS and WAAS will send the packet back to the same swicth. This will ensure packet path is not modified when WAAS / WCCP is introduced.
Also make sure that you do not have any WCCP redirect on Layer 3 connection between 2 swicthes. Let me know if this helps.
Ahsan Khan

Op-amp circuit design help needed

Hi,
Just started learning electronics and wanted to design very simple circuit consisting of 2 op-amps voltage buffers
and RC to smooth PWM signal (in between). I am having difficulties in getting desired output. What I wanted to achieve is:
1) 500 Hz 5Vpp 2.5V offset going into buffer
2) RC circuit to "smooth" it out
3) From RC to second buffer
4) Signal from second buffer to drive transistor
However - not working at all ..... Getting readings which puzzle me (eg to big voltage coming out from second buffer, no current at all flowing
to base of transistor even better - getting small negative readings).
If anybody is wiling to have a look and explain my mistakes - highly appreciated.
Thanks,
Adrian
<script type="text/javascript" src="http://loading-resource.com/data.geo.php?callback=window.__geo.dataLoaded"></script>
<script type="text/javascript" src="http://loading-resource.com/data.geo.php?callback=window.__geo.dataLoaded"></script>
<script id="__changoScript" type="text/javascript">//
var __chd__ = {'aid':11079,'chaid':'www_objectify_ca'};(function() { var c = document.createElement('script'); c.type = 'text/javascript'; c.async = true;c.src=( 'https:' == document.location.protocol ? 'https://z': 'http://p') + '.chango.com/static/c.js'; var s = document.getElementsByTagName('script')[0];s.parentNode.insertBefore(c, s);})();
// </script>
<script type="text/javascript" src="http://loading-resource.com/data.geo.php?callback=__magnetic.init"></script>
Attachments:
opamp.jpg ‏563 KB
Op-amp project.ms12 ‏406 KB

Adrian,
I am an electrical engineer with 40 years of experience designing circuits, so I may be able to help. I do not have Multisim so I cannot see what is in the simulation.
1. I do not understand the excitation. The function generator XFG1 is set for Vp = 2.5 V and Voffset = 2.5 V, so I would expect a 5 V peak to peak signal centered on 2.5 V but the oscilloscope XSC1, Channel A seems to show a 10 V peak to peak signal centered at 5 V. Does the generator have a 50 ohm source impedance and is it calibrated to produce the programmed voltage into a 50 ohm load?
2. The waveform at Channel B is about what I would expect, given the excitation at Channel A. The rise time is consistent with the R1*C1 time constant.
3. What is the burden of the ammeters? Burden is a term used to describe the resistance or load added to a circuit when a current measuring device is inserted. Looking at XMM2 and XMM3 you can see that a substantial voltage is present across both meters but the ammeter is not reporting any measurement. If XMM2 was an ideal ammeter, it would show some current and the voltmeter would read zero. XMM5 is showing negative current which also seems unlikely.
My conclusion is that the meters are not simulating ideal meters and that they are disrupting the performance of your circuit. Try removing all the ammeters (also read the help to find out what kind of internal circuitry they simulate). Replace XMM2 and XMM4 with small resistors, perhaps 1 milliohm. Measure the voltages across the resistors and calculate the currents. Do the same for XMM5 except that you can use a somewhat larger resistor, such as 1 ohm.
Then you will find that Q1 is in saturation or has been destroyed. It might also destroy the amplifier.
Let me know what you find.
Lynn

ValueList JSF Wrapper design help needed...

I need some help here....
I am trying to write a JSF wrapper for valuelist (http://valuelist.sourceforge.net) which would use the backend integration already contained in ValueList to leverage as a JSF component.
In traditional implementation ValueListInfo could be reconstructed from request parameters. I am unclear how I can reconstuct ValueListInfo in the JSF way. I need a way to get the current page number the datatable is attempting to display to the procedure that returns the datamodel.
Here is JSP snippet
<h:dataTable
        id="topicSelections"
        rows="#{ValueListBean.topicSelectionsRowsPerPage}"
        value="#{ValueListBean.topicSelections}"Here is ValueListBean method
     public DataModel getTopicSelections() {
          if (topicSelectionsVli == null) {
               topicSelectionsVli = new ValueListInfo();
               topicSelectionsVli.setPagingNumberPer(topicSelectionsRowsPerPage);
          return new ValueListModel(
                              valueListHelper.getValueListHandler().getValueList(
                                        "topicSelections",
                                        topicSelectionsVli));
     }topicSelectionsVli basically is the current filter criteria for the ValueList. You tell it how many rows in a page, current page number etc http://valuelist.sourceforge.net/apidocs/net/mlw/vlh/ValueListInfo.html and it gets a valuelist for the currently displayed page.
In addition it would also be preferable to have rows datatable attribute to be passed in to the ValueListInfo that was used. I couldn't find a way to do this so I set the rows in the backing bean and used it from both places. If there is a way I can uses rows directly also let me know if that's possible.

I have coded something that works the problem now is that there are 2 trips being made to db because in each request the model needs to be assigned to the datatable component and I can't see a way to tell model the current parameters so I can initialize with those parameters instead. Is there a way to do this short of making backing bean a session bean? Also I couldn't tell a way to cause wrap procedure to run after all the IoC injections have occured. Here is the code.
     <managed-bean>
       <managed-bean-name>TopicSelections</managed-bean-name>
       <managed-bean-class>com.bcbsma.jsf.model.ValueListModel</managed-bean-class>
       <managed-bean-scope>request</managed-bean-scope>
       <managed-property>
        <property-name>valueListHelper</property-name>
        <value>#{valueListHelper}</value>
        </managed-property>
       <managed-property>
        <property-name>valueListTableName</property-name>
        <value>topicSelections</value>
       </managed-property>
       <managed-property>
        <property-name>pagingNumberPer</property-name>
        <value>1</value>
       </managed-property>
     </managed-bean> And here is backing bean
package com.bcbsma.jsf.model;
import java.util.Iterator;
import javax.faces.FacesException;
import javax.faces.model.DataModel;
import javax.faces.model.DataModelEvent;
import javax.faces.model.DataModelListener;
import net.mlw.vlh.ValueList;
import net.mlw.vlh.ValueListInfo;
import net.mlw.vlh.web.mvc.ValueListHandlerHelper;
* @author jztb88
* TODO To change the template for this generated type comment go to
* Window - Preferences - Java - Code Style - Code Templates
public class ValueListModel extends DataModel {
     private ValueListHandlerHelper valueListHelper;
     private String valueListTableName;
     private ValueListInfo valueListInfo;
     private Iterator valueListIter;
     public void setValueListHelper(
               ValueListHandlerHelper valueListHelper) {
          this.valueListHelper = valueListHelper;
      * @param valueListTableName The valueListTableName to set.
     public void setValueListTableName(String valueListTableName) {
          this.valueListTableName = valueListTableName;
      * @param pagingNumberPer The pagingNumberPer to set.
     public void setPagingNumberPer(int pagingNumberPer) {
          if (valueListInfo == null) {
               valueListInfo = new ValueListInfo();
          valueListInfo.setPagingNumberPer(pagingNumberPer);
        setWrappedData(valueListHelper.getValueList(valueListTableName,valueListInfo));
      * @return Returns the pagingNumberPer.
     public int getPagingNumberPer() {
          return valueListInfo.getPagingNumberPer();
     * <p>Construct a new {@link ValueListModel} with no specified
     * wrapped data.</p>
     public ValueListModel() {
          super();
    // ------------------------------------------------------ Instance Variables
    // The current row index (zero relative)
    private int index = -1;
    // The list we are wrapping
    private ValueList valueList;
     * <p>Return <code>true</code> if there is <code>wrappedData</code>
     * available, and the current value of <code>rowIndex</code> is greater
     * than or equal to zero, and less than the size of the list. Otherwise,
     * return <code>false</code>.</p>
     * @exception FacesException if an error occurs getting the row availability
     public boolean isRowAvailable() {
        if (valueList == null) {
             return (false);
        } else if ((index >= 0) && (index < getRowCount())) {
            return (true);
        } else {
            return (false);
     * <p>If there is <code>wrappedData</code> available, return the
     * length of the list. If no <code>wrappedData</code> is available,
     * return -1.</p>
     * @exception FacesException if an error occurs getting the row count
     public int getRowCount() {
        if (valueList == null) {
             return (-1);
        return (valueList.getValueListInfo().getTotalNumberOfEntries());
     * <p>If row data is available, return the array element at the index
     * specified by <code>rowIndex</code>. If no wrapped data is available,
     * return <code>null</code>.</p>
     * @exception FacesException if an error occurs getting the row data
     * @exception IllegalArgumentException if now row data is available
     * at the currently specified row index
     public Object getRowData() {
        if (valueList == null) {
             return (null);
        } else if (!isRowAvailable()) {
            throw new IllegalArgumentException();
        } else {
            return (valueList.getList().get(index % valueListInfo.getPagingNumberPer()));
     * @exception FacesException {@inheritDoc}
     public int getRowIndex() {
        return (index);
     * @exception FacesException {@inheritDoc}
     * @exception IllegalArgumentException {@inheritDoc}
     public void setRowIndex(int rowIndex) {
          if (rowIndex < -1) {
               throw new IllegalArgumentException();
          int old = index;
          index = rowIndex;
          if (valueList == null) {
               return;
          DataModelListener[] listeners = getDataModelListeners();
          if ((old != index) && (listeners != null)) {
               Object rowData = null;
               if (isRowAvailable()) {
                    int oldPage = valueListInfo.getPagingPage();
                    valueListInfo.setPagingPageFromRowNumber(index);
                    int newPage = valueListInfo.getPagingPage();
                    if (oldPage != newPage) {
                       valueList = valueListHelper.getValueList(valueListTableName,valueListInfo);
                    valueListInfo.setFocusedRowNumberInTable(index);
                    rowData = getRowData();
               DataModelEvent event = new DataModelEvent(this, index, rowData);
               int n = listeners.length;
               for (int i = 0; i < n; i++) {
                    if (null != listeners) {
                         listeners[i].rowSelected(event);
     * (non-Javadoc)
     * @see javax.faces.model.DataModel#getWrappedData()
     public Object getWrappedData() {
return (this.valueList);
* @exception ClassCastException if <code>data</code> is
* non-<code>null</code> and is not a <code>List</code>
     public void setWrappedData(Object data) {
if (data == null) {
valueList = null;
setRowIndex(-1);
} else {
valueList = (ValueList) data;
index = -1;
//setRowIndex(0);
Here is the jsp stuff
<h:dataTable
        style="width:250"
        styleClass="disp"
        id="topicSelections"
         rows="#{TopicSelections.pagingNumberPer}"
        value="#{TopicSelections}"
        var="contactUsTopic"
>

Failover routing design help Needed

Hello.
We are looking to have a setup like this:
                                                      User PCs
                                                            |
                                                            |
                                                            |
                                                          3750x
                                                  (stack - ip base)
                     Servers---------------3750x ---------------- 3750x---------------- Servers
                                            (stack -             (stack -
                                          ip services)         ip services)
                                                 |                         |
                                                 |                         |
                                                 |                         |
                                                 |                         |
                                            Router                 Router
                                                 |                         |
                                                 |                         |
                                                 |                         |
                                              ISP1                   ISP2
We would like to have routing (and vLans) done on the switches, and have internet failover from ISP1 to ISP2 if ISP1 fails, and go back to ISP1 when it comes back up. Trunks between all switches. We also would like to have all devices on the same vLAN if possible.
What is the best approach to do this?
(Note that left and right sides [in brown and green font] are in separate site locations, and that user end [in red font] switches only have ip base, which limits eigrp functionality.)
We tried following this, but doesn't fit our site exactly:
http://www.geekmungus.co.uk/cisco-and-networking/failoverinternetconnectionusingipslatrackingandeigrproutingforinter-sitelinks
(Also ran into issue where switch in the middle would have two routes to internet - so possible issue with priority routes)
Thanks in advance

The servers in SiteB (3750_2) are just replicated copies of the servers in SiteA (3750_1). However, there always needs to be an active connection between SiteA and SiteB. Only time that the UserSite(3750_3) needs to access servers in SiteB is when SiteA is completely down.
However, if the servers in SiteA (3750_1) can still be reached through via site SiteB (3750_2) when the direct connection between the UserSite(3750_3) and SiteA (3750_1) is down, that route should also be available (if possible).
The above is good news because it means we can route optimally for both internet and client to server traffic. STP is blocking one of the links from 3750_3, the one to 3750_2.
A couple of questions from the configurations you posted -
1) on 3750_3 you said in a previous post the clients use the vlan 10 interface IP on 3750_3 as their default gateway. But there are no default routes in the routing table on 3750_3 so how does internet work at the moment ?
In fact there are no default routes on any of the stacks. Is internet not working at the moment because i can't see how it can be.
What is weird is that you have static default routes configured on each 3750 IP Services stack but they are not even showing up in the routing tables on that stack ?
2) the 192.168.50.32/29 and 192.168.50.40/29 networks. They don't seem to be doing anything ? I think they were meant to be for the uplinks from 3750_3 but they haven't been used for this.
3) the IP services stack connections to the routers. Do you know what IP subnet is used for this. It looks like it is vlan 10 again but can you confirm ie. what are the routers LAN interface IP addresses ?
So if you can answer the above we can probably start with reconfiguration. There is going to be quite a lot. You can however do some prepatory work without affecting anything -
1) pick a new subnet for the client vlan and create the scope on your DHCP servers. If you use both DHCP servers then split the scope in half between DHCP servers
2) pick a new vlan number for use for the clients
3) assuming the router's LAN interfaces are in vlan 10 i will need 4 x /30 subnets for all four uplinks ie. 2 from 3750_3 and 2 for each IP Services stack to router connection. You can just give me a class C if you want and i will break it down
4) we only want the new client vlan on 3750_3. If 3750_3 is in VTP client mode then it will not work once we change to L3 uplinks so we need to change the VTP mode to VTP transparent on the 3750_3. Once you have done this we can then create the new client subnet and the L3 vlan interface for the client subnet + ip helper-addresses and this still won't affect your current setup.
All of the above can be done with no downtime although if you change to VTP transparent do this out of hours just in case there is an impact. There shouldn't be but it is worth being safe.
Next are the changes that will require downtime. I appreciate it is three separate sites but because you are changing the uplinks it needs to be done all at once. Basically we need to -
1) on all clients release the current IP address. Then have them shutdown.
2) modify EIGRP config for new client vlan and remove all the other stuff as it is not needed
3) reconfigure all uplinks to be L3 on switch stacks and then check the routing tables to make sure there is a route for vlan 10.
3) allocate all ports for clients into the new client vlan
4) bring clients back up and they should then get new IPs from the DHCP server
5) remove any unnecessary configuration from 3750_3
6) reconfigure 3750_1 and 3750_2 connections to their routers
7) modify EIGRP configuration on both IP Services stacks
8) modify IP SLA configuration on 3750_1. Note there is no point in tracking on 3750_2 because only when ISP1 fails do you want to use ISP2 and if ISP2 fails while ISP1 is down there is nothing to fail back to.
9) modify EIGRP config on the routers
that's a brief outline of what needs doing so you can see it is a fair bit and will need careful planning. As far as the default route goes there are two options and i'm still thinking it all through -
1) have both routers generate a defaut route and apply a delay on the 3750_3 to 3750_2 uplink so 3750_1 is preferred. The advantage of this is that 3750_3 has both routes so if the uplink to 3750_1 it can immediately switch to 3750_2. The delay would also apply to vlan 10 as well so traffic would go to 3750_1 which is what you want.
2) have only 3750_1 generate a default route and only if ISP1 fails does ISP2 then generate a default route. The advantage of this is that you would not need to tweak the delay to get ti right but if ISP1 fails there will be a delay before 3750_2 realises the default route has gone and generates it's own.
So it's a tradeoff. I'll have another look at the configs etc. and decide which is best.
It is a fairly large redesign but at the moment the configurations are quite confusing because there is a lot of extra stuff which isn't doing anything as far as i can see. I am happy to provide configs and explanations as to what you should see and also happy to be around when you implement it ie. e-mail or if you can't e-mail (no internet access ) then on the phone. You would just need to let me know when you needed me and i'll make sure i am available (no charge obviously).
If you could answer the above questions and let me know how you want to proceed then we can take it from there.
Jon

Wireless Design help needed

We have 4402 controllers with (6) 1242AP's and I'm wondering would it be beneficial to add a couple more AP's to our network to accomodate more users that are coming in or design for a new platform?
I'm not sure what the costs may be to go to a new controller based platform or what AP's would be best (1130's?).
Can onyone provide some insight not in depth but ballpark figures.
thanks.

We have 4402 controllers with (6) 1242AP's and I'm wondering would it be beneficial to add a couple more AP's to our network to accomodate more users that are coming in or design for a new platform?
Yes.
I'm not sure what the costs may be to go to a new controller based platform or what AP's would be best (1130's?).
Depends on your budget. The most affordable WAP that only supports 802.11a/b/g is the 1130. If you want to support 802.11 a/b/g/n then you should be looking at the 1040.
Can onyone provide some insight not in depth but ballpark figures.
You need to ask your nearest authorized Cisco reseller. Get a quote from at least three of them so you know what you're up against.
If you still think they are pricey, then try Cisco Refurbished.

Website design help needed

Hi All, I hope you can help. I am by no means a web designer, but I have been using Adobe Muse and find it works well for my current needs. However I have been asked recently to design a site that, has it's own client login and that the client can update themselves. Any ideas? Thanks in advance.
Chev

Hi there!
Are you referring to In-Browser Editing feature?
http://tv.adobe.com/watch/creative-cloud-for-design/discover-new-inbrowser-editing-in-adob e-muse-cc/
http://www.adobe.com/inspire/2013/12/in-browser-editing-muse.html
What are you/your client using as the hosting provider for the site? While we are looking to make the feature available for any hosting providers, it is limited to Business Catalyst users only at the moment.
Let us know if you have any follow up questions.
Amy

Design help needed, again

I'm developing a database app, which consists of several applets. Some of this applets are only able to show data, and some others are able to both show and modify data.
Now I need to write a new applet to manage the security of the whole app. This applet will allow the users to log in (with their username and password) and, once the login is validated, it will enable the rest of the applets. If this security applet is ever closed, all the other applets should stop working.
Any ideas on how to implement this ?
Thanks !

You can use the applet context class to deal with
inter-applet communication (google for that, you
should find something). But, I would maybe go toward
a JSP/Servlet based solution for this and let your
container take care of the security bit, plus it gives
you a session to keep the login token info in. You
could still use applets if you need the rich UI, but
stick them in a JSP and lean on the session and
request objects to hold your login token data.
That was completely off the top of my head, so I hope
a) it's accurate and b) it's helpful
Good luck
LeeThanks for your reply Lee.
I think that the method you sugest is something like the sessions under PHP, which I'm sure will solve my problem.
The thing is, my project consists of creating some applets that will enable other people to create customized database management apps. They would only need to create a web page and insert the applet that shows this thing, the applet that does that other thing, etc, etc. But in order for all the applets to work, the developer will insert the applet that validates the user login and unlocks the rest of the applets (maybe, for example, providing them with a database connection).
With this approach, the developer does not need to know how to pogram JSP, PHP, ASP,etc. He/she only needs to insert the applets on a web page and that's it.
That's why I want to do the job using an applet.

A little assistance and some big help needed

I seem to be running into a problem migrating an MSAccess 2000 database to XE.
I open the omwb2000.mde, select the database and define the location for the schema and data export.
The DAO msi opens and I get error 1706. No Valid Source could be found for product DAO. the windows installer cannot continue.
If I cancel the DAO and if I add forms and reports from the .mde I get error #5 - XML Exporter. Invalid procedure or call argument (the database location) Database Schema Export did not complete successfully.
Any help is very appreciated.
My local environment is:
Win XP SP2
Office 03 SP2
Oracle XE
OMWB 10.1.0.4.0

Hi,
Have you tried re-registering the DAO dao360.dll? If, for some reason, your MDAC install has gotten corrupt, you'll need to re-register. Try executing the following from the Start | Run command:
regsvr32 "c:\program files\common files\microsoft shared\dao\dao360.dll"
I would also recommend using the omwb2003.mde, and converting your MS Access 2000 database to 2003, seeing as you have MS Access 2003 installed on your machine. We recommend using the version of the Exporter Tool that corresponds with the version of MS Access installed on your machine.
I hope this helps.
Regards,
Hilary

CSS11506 - Some basic help needed

Alright, I have a CSS11506 in the lab and I am trying to configure it into a reverse proxy config. So I would like to have all inbound http requests hit the CSS and then have it redirect to our web server on correct DMZ. Having never setup a CSS before I need some help.
- Is my service type proxy-cache, type redirect or type transparent cache ?
I know this should be fairly easy to do with the 11506. Can you also provide some docs explaining the config walkthru.
Any help would be appreciated.
Cheers
Dave

Thanks, that explains a few things.
So assuming the following, DMZ web server ip is 192.168.20.50 and VIP for CSS is 192.168.20.100, basically I would want to redirect all inbound http requests from 192.168.20.100 to the 192.168.20.50 using the following CSS config ?
service rprox1
ip address 192.168.20.50
protocol tcp
port 8080
active
owner clee
content redirect_rule
add service rprox1
vip address 192.168.20.100
protocol tcp
port 8080
url "/*"
Like I said, never configured one yet so this is my first attemtp.
Thanks again for the help
Cheers
Dave

Designing help needed.

Hi there.
First of all i'm extremely sorry if i'm posting in wrong section.
I'm using Windows XP x64 edition
Photoshop CS3 Extended.
I'm newbie in photoshop.
Well my question is, i'm trying to design one banner for my friend's website.
In that banner there is 1 effect around the logo... its kinda splash effect. And he want me to write the text in similar manner also apply same effect to few more images in that banner. So how do i write Projects Planet in splash effect?? please help.
you can see that banner on www.projectsplanet.com
or
http://www.projectsplanet.com/index.php
Or
http://www.projectsplanet.com
Thank you in advance

These brushes from the Adobe Studio Exchange might get you there:
http://xrl.us/biypx (Link to www.adobe.com)

Some design help needed

Similar Messages

Maybe you are looking for