Xen using two interfaces

Hello
I got Xen installed and it's running fine. Now I want to apply a second interface to it so that I can have certain guests routing their traffic over xenbr1
In my setup, xenbr0 was running fine. I have a netcfg config for xenbridge-static and Xen goes with xenbr0 over eth0.
To have a second interface,
1. I set up a netcfg profile for xenbr1 as xenbridge-static2
2. I wrote a script "multi-interface" with the following contents
#!/bin/sh
dir = $(dirname "$0")
"$dir/network-bridge" "$@" vifnum=0 netdev=eth0 bridge=xenbr0
"$dir/network-bridge" "$@" vifnum=1 netdev=eth1 bridge=xenbr1
When I now start the Dom0 and type ip addr I see eth0 and eth1 but no xenbr0 anymore, I only got xenbr1.
When I run my script manually with
/etc/xen/scripts/multi-interface start nothing happens journalctl also shows no error or something
When trying netcfg xenbridge-static (thats the one with xenbr0 in it) it tells me
> xenbridge-static already connected
But ip addr still doesn't show xenbr0, only lo, eth0, eth1 and xenbr1
Before I wrote the multi-interface script and restarted xend, I had xenbr0 running and was using it accessing the net.
ifcfg xenbr0 <some-ip> brings up the xenbr0 interface, but I want, that it comes up correctly at boot. Also the default route goes over xenbr1 now and not xenbr0 as it should.
What's going wrong here? Why is xenbr0 not comming up automatically but "ifcfg xenbr0 <ipnumber>" works?

Analyzing the config files you revealed the inactiv NAT exemption for traffic flow between LAN-A and LAN-C.
Furthermore a static route fro LAN-C out the inside interface was missing.
Fixing both communication works fine.
Thanks for the real good support.

Similar Messages

Use two interfaces on the same network

Hello every one,
I actually starting to work on a cisco project. I'm a beginner on networking and cisco technologie.
For my project we use a router 2921.
We got two network:
- Network A: 192.198.0.X / 255.255.255.0 / Gateway 192.198.0.1
- Network B: 162.168.0.X / 255.255.0.0 / Gateway 162.168.0.1
Each network use switch, Switch A (connecting to network A) is connected to interface G0/0.
And Switch B (connecting to network B) is connected to interface G0/1.
Router well configured as:
- G0/0: ip address 192.198.0.1 255.255.255.0 (network A)
- G0/1: ip address 162.168.0.1 255.255.0.0 (network B)
Every think working fine.
The problem is with this one, we need to connect a computer on G0/2. This computer is configure as network A (192.198.0.10 / 255.255.255.0 and same gateway).
I can't configure G0/2 as 192.198.0.1 255.255.255.0 (network A), cause G0/0 use this adresse.
I can't put this computer on the switch A, my only physical possibilité is to connect him on G0/2.
We just need to use interface G0/0 and G0/2 as a switch on the router with the same gateway (192.198.0.1)
How can i connect this computeur? How can i configure two interfaces on the same network and same gateway?
Thanks you

I would just put the PC on a different network, but if you really want it to be in the same network, you could use IRB to connect two of the interfaces on the router at layer 2.
Here is an example config for IRB:
interface FastEthernet0/0
bridge-group 1
interface FastEthernet0/1
bridge-group 1
bridge irb
interface BVI1
ip address 192.168.0.1 255.255.255.0
bridge 1 route ip
Notice that the physical ports do not have IP addresses on them, the IP for the subnet is on the BVI interface.

VPN hub and spoke topology, hub using two interfaces

Hi,
I'm facing a problem with Cisco ASA 5500 running software 8.4.
I know, i know, VPN hub and spoke was already discussed many times. But all these discussions are about a hub using only one interface, the outside/public interfcae.
My topology is slightly different.
LAN-A - VPN peer A <--> (Internet) <--> (outside if)-ASA-B-(inside if) <--> (corporate network) <--> (outside if)-ASA-C-(inside if) <--> LAN-C
VPN communication should flow between LAN-A and LAN-C.
Phase I and phase II are working on both tunnels (A-B, B-C). Therefore cryptomaps should be right.
IPsec SA for tunnel A-B is explicit for LAN-A and LAN-C.
IPsec SA for tunnel B-C connects any with LAN-C.
What I can see on ASA-B is incoming traffic from LAN-A on tunnel A-B.
That does not trigger an SA for tunnel B-C!
Traffic initiated from LAN-C, I can see on ASA-B as incoming traffic, SA for LAN-A to LAN-C is build up on tunnel B-C.
Traffic seems to enter tunnel A-B as I can see outgoing traffic on ASA-B.
Of course, NAT exemption is configured for traffic between LAN-A and LAN-C.
Why doesn't incoming traffic from LAN-A initiate SA on tunnel B-C?
It looks like incoming traffic from LAN-A enters ASA-B and is dropped or send anywhere but the right direction.
I admit I'm clueless.
Any help would be appreciated.
Thanks folks.

Analyzing the config files you revealed the inactiv NAT exemption for traffic flow between LAN-A and LAN-C.
Furthermore a static route fro LAN-C out the inside interface was missing.
Fixing both communication works fine.
Thanks for the real good support.

How to use two or more mics simultaneously on a firewire interface?

hey i have the fireface 400 and am using it with logic. how do i use both mic pres on the front of the fireface simultaneously. for example i want to record an acoustic using two mics. probably a simple question please help me out.

How do you "use" them? Please be more specific...
Make sure you choose the correct inputs on the relevant tracks..
If that doesn't help you I've heard stamp collecting can be fun.

How do I use two external monitors with my laptop?

I have a new Pavilion dm4-301 d cl Entertainment PC. My OS is Windows 7. I am used to using two external monitors with a docking station. This new laptop does not have a docking station. What do I need to get to use two external monitors?
This question was solved.
View Solution.

Certainly not without a dock but even with, HP laptop docks pretty well limit you to one of the external monitor ports, even if there are two on the dock. We have used a device called an Atlona AT-HDPIX2 which is a usb to hdmi adapter. It provides a third monitor capability for a laptop....use the native external monitor port and the internal laptop display and then this device gives a third monitor which is full configurable from the Windows 7 display interface...clone, extend, etc. It allows full HD resolution and is responsive enough for even light gaming. HP makes no true docking station for your laptop.

How Can i Use two Different Public IP Addresses no my DMZ with ASA Firewall.

How To Using Two Different Public IP Address on My DMZ with ASA 5520
Postado por jorge decimo decimo em 28/Jan/2013 5:51:28
Hi everyone out there.
can any one please help me regarding this situation that im looking for a solution
My old range of public ip address are finished, i mean (the 41.x.x.0 range)
So now i still need to have in my DMZ another two servers that will bring some new services.
Remember that those two server, will need to be accessable both from inside and from outside users (Internet users) as well.
So as i said, my old range of public ip address is finished and we asked the ISP to gives some additional public
ip address to address the need of the two new servers on DMZ. and the ISP gave us the range of 197.216.1.24/29
So my quation is, on reall time world (on the equipment) how can i Use two different public ip address on the same DMZ
on Cisco ASA 5520 v8??
How my configuration should look like?
I was told about implementing static nat with Sub Interfaces on both Router and ASA interface
Can someone please do give me a help with a practical config sample please. i can as well be reached at [email protected]
attached is my network diagram for a better understanding
I thank every body in advance
Jorge

Hi,
So looking at your picture you have the original public IP address range configured on the OUTSIDE and its used for NAT for different servers behind the ASA firewall.
Now you have gotten a new public IP address range from the ISP and want to get it into use.
How do you want to use this IP address range? You want to configure the public IP addresses directly on the servers or NAT them at the ASA and have private IP addresses on the actual servers (like it seems to be for the current server)?
To get the routing working naturally the only thing needed between your Router and Firewall would be to have a static route for the new public network range pointing towards your ASA OUTSIDE IP address. The routing between your Router and the ISP core could either be handled with Static Routing or Dynamic Routing.
So you dont really need to change the interface configuration between the Router and ASA at all. You just need a Static route pointing the new public IP address towards the ASA outside IP address.
Now when the routing is handled between the ISP - ISP/Your Router - Your Firewall, you can then consider how to use those IP addresses.
Do you want to use the public IP addresses DIRECTLY on the HOSTS behind the firewall?This would require you to either configure a new physical interface with the new public IP address range OR create a new subinterface with the new public IP addresses range AND then configure the LAN devices correspondingly to the chosen method on the firewall
Do you want to use the public IP addresses DIRECLTY on the ASA OUTSIDE as NAT IP addresses?This would require for you to only start configuring Static NAT for the new servers between the inside/dmz and outside interface of the ASA. The format would be no different from the previous NAT configuration other than for the different IP addresses ofcourse
Of the above ways
The first way is good because the actual hosts will have the public IP addresses. Therefore you wont run into problems with DNS when the LAN users are trying to access the server.
The second way is the one requiring the least amount of configurations/changes on the ASA. In this case though you might run into problem with DNS (to which I refer above) as the server actually has a private IP address but the public DNS might reply to the LAN hosts with a public IP address and therefore connections from LAN could fail. This is because LAN users cant connect to the servers OUTSIDE NAT IP address (unless you NAT the server to public IP address towards LAN also)
Hopefully the above was helpfull. Naturally ask more specific questions and I'll answer them. Hopefully I didnt miss something. But please ask more
I'm currently at Cisco Live! 2013 London so in the "worst case" I might be able to answer on the weekend at earliest.
- Jouni

Can i use one interface to load data into 2 different tables

Hi Folks,
Can i use one interface to load data into 2 different tables(same schema or different schemas) from one source table with same structure ?
Please give me advice
Thanks
Raj
Edited by: user11410176 on Oct 21, 2009 9:55 AM

Hi Lucky,
Thanks for your reply,
What iam trying is ...Iam trying to load the data from legacy tables(3) into oracle staging tables.But i need to load the same source data into two staging tables(these staging tables are in two different schemas)
can i load this source data into two staging tables by using single standard interface(some business logic is there)
If i can then give me some suggestion how to do that
Thanks in advance
Raj

Error in using one interface in other

Hello,
I have two interfaces , interface1 & interface 2 . Interface 1 is a temp which is used by interface2 as a source.
I'm trying to set the property "Use Temporary interface as derived table" but the check box is disabled and i cannot modify it. , Interface 1 has target temp table.
Any advise ?
In technology for oracle support derived table is already selected.
thx

Hi Matt
I'm using the same FM but it's not working. Can you please share what data you are passing in the FM.
After debugging I found that my confirmation is getting created but it's not getting saved.
Please enlighten me.
Thanks
Ankit

Error while extending two interfaces.

I am using Weblogic Integration 8.5. When an interface extends two interfaces. Out of which one has a clone method declared. 
This IDE is giving error as 
ERROR: Sample.java:3: This type inherits two versions of method java.lang.Object clone(), one from java.lang.Object and another from com.ParentOne, that have conflicting access restrictions. 
Following are code snippets. 
public interface Sample extends ParentOne, ParentTwo {} 
public interface ParentOne { 
public Object clone() throws CloneNotSupportedException; } public interface ParentTwo {} 
Same is working fine in other IDE with the bea JDK as well as sun's jdk. 
 
Can anyone help on this? Many Thanks.

I am using Weblogic Integration 8.5. When an interface extends two interfaces. Out of which one has a clone method declared. 
This IDE is giving error as 
ERROR: Sample.java:3: This type inherits two versions of method java.lang.Object clone(), one from java.lang.Object and another from com.ParentOne, that have conflicting access restrictions. 
Following are code snippets. 
public interface Sample extends ParentOne, ParentTwo {} 
public interface ParentOne { 
public Object clone() throws CloneNotSupportedException; } public interface ParentTwo {} 
Same is working fine in other IDE with the bea JDK as well as sun's jdk. 
 
Can anyone help on this? Many Thanks.

How to move node in treeView using two buttons ?

Hello ,
Am starter , and am working on a Winforms application.
I browse an XML file , then I populate treeview in my interface. I want to move selected node in the two sens ( up and down) using two button ( so not with events , normal drag and drop with mouse ) .
- I select the nod
- I click on the up button , then the node take the new place ( something like , drop and insert maybe )
I don't know if is possible to affect this events to button or they are another way to do this
this is my code concerning populating treeView :
private void browseSourceFileBtn_Click(object sender, EventArgs e)
var openSourceFile = openSourceFileDialog.ShowDialog();
if (openSourceFile == DialogResult.OK)
fichierSourcePath.Text = openSourceFileDialog.FileName;
// Connect the XML FILE DATABASE to the application interface
private void button1_Click(object sender, EventArgs e)
if (openSourceFileDialog.FileName == String.Empty)
MessageBox.Show("u should open a file", "Erreur de chargement", MessageBoxButtons.OK, MessageBoxIcon.Error);
else
try
MessageBox.Show("plz wait ");
statusLabel.Text = "Début de chargement du fichier";
var doc = new XmlDocument();
doc.Load(openSourceFileDialog.FileName);
sourceTreeView.Nodes.Clear();
var rootNode = new TreeNode(doc.DocumentElement.Name);
sourceTreeView.Nodes.Add(rootNode);
sourceTreeView.CheckBoxes = true;
sourceTreeView.AllowDrop = true;
DateTime starteTime = DateTime.Now;
BuildNode(doc.DocumentElement, rootNode);
DateTime endTime = DateTime.Now;
TimeSpan duree = endTime - starteTime;
sourceTreeView.ExpandAll();
sourceTreeView.Nodes[0].EnsureVisible();
string chargementTemps = "" + duree.Minutes + "min : " + duree.Seconds + "s : " + duree.Milliseconds + "ms";
statusLabel.Text = "Chargement effectué avec succés en :" + chargementTemps;
catch (Exception)
sourceTreeView.Nodes.Clear();
statusLabel.Text = "Echec de chargement";
thanks u a lot

Hi Nico68er,
According to your description, you'd like to move up or down the node in TreeView.
By reseraching, I found this post in StackOverFlow is similar with your issue.http://stackoverflow.com/questions/2203975/move-node-in-tree-up-or-down
From this answer.
You can use the following extensions
public static class Extensions
public static void MoveUp(this TreeNode node)
TreeNode parent = node.Parent;
TreeView view = node.TreeView;
if (parent != null)
int index = parent.Nodes.IndexOf(node);
if (index > 0)
parent.Nodes.RemoveAt(index);
parent.Nodes.Insert(index - 1, node);
else if (node.TreeView.Nodes.Contains(node)) //root node
int index = view.Nodes.IndexOf(node);
if (index > 0)
view.Nodes.RemoveAt(index);
view.Nodes.Insert(index - 1, node);
public static void MoveDown(this TreeNode node)
TreeNode parent = node.Parent;
TreeView view = node.TreeView;
if (parent != null)
int index = parent.Nodes.IndexOf(node);
if (index < parent.Nodes.Count -1)
parent.Nodes.RemoveAt(index);
parent.Nodes.Insert(index + 1, node);
else if (view != null && view.Nodes.Contains(node)) //root node
int index = view.Nodes.IndexOf(node);
if (index < view.Nodes.Count - 1)
view.Nodes.RemoveAt(index);
view.Nodes.Insert(index + 1, node);
Child nodes will follow their parents.
You could use this class in your program.
If you want to move the node up. Call the Extensions.MoveUp(this.treeView1.SelectNode)
private void button1_Click(object sender, EventArgs e)
if (this.treeView1.SelectedNode != null)
Extensions.MoveUp(this.treeView1.SelectedNode);
If you have any other concern regarding this issue, please feel free to let me know.
Best regards,
Youjun Tang
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Communication between thread in the same process using file interface.

Hi,
I am developing driver and i need to communicate between two thread.
>can anyone guide me on implementing communication between two thread in the same process using File Interface. First thread will be driver and second will be application.I need to send IOCTL like commands using File interface ie is WriteFile(),ReadFile()
from Host process to driver through file-interface(which run's in driver context).Host process should not be blocked for the duration of the driver to process the command.
>File-interface will run in driver context and it will be responsible to receive command from application and pass it to the driver.
what are the complexity introduced?
>Can anyone also give me the link/reference to get more information on this topic?
>How to replace IOCTL command's for instance baud _rate change command with a file interface for example with IRP.

Here is the detailed query:
Hardware Abstraction Layer will interact with Driver(Both will be running in complete different process) .there is a IOCTL for command and File interface for read and write.
My requirement is:
Both should run in the same process so HAL will run as one thread and driver as another thread in the same process .I don't want HAL to wait for completion of request and also i don't want driver to be blocked .
We are planning to use a File Interface for communication between Hardware abstraction layer and Driver
HAL will send the command or read/write operation to a file interface and driver will get the command or read/write request from the File interface
There is a flexibility to change Hardware Abstraction layer and also the Driver
Is it possible to use IOCTL between two thread under same process? if not what other options do we have.
Can we use File interface to send command (like IOCTL) between two thread?

No performance gain when using local interfaces

Hello,
I'm doing some tests to compare performances between remote ejb interfaces and local ejb interfaces.
I have two stateless session beans EJB1 and EJB2, EJB1 calls a method on EJB2, this method receives one object as the only parameter and returns it immediately. The parameter is a big object (~700ko). My test consists simply of making 1000 calls from EJB1 to EJB2, one time with remote interfaces, one time with local interface. For both tests, the EJBs run in the same container, same VM.
The results show absolutely no differences between the remote and the local interface !
As I found these results a bit surprising, I changed the serialization method of my parameter object this way:
private void writeObject(java.io.ObjectOutputStream out) throws IOException {
System.out.println("writeObject(MyBigObject)");
out.defaultWriteObject();
just to check if my object is serialized when using remote interface. And the response is no.
So question is: is there an "undocumented optimization" of the stub/skel generated by weblogic which make local calls when calling a remote method inside the same VM ?
Some precisions:
- I'am using weblogic 8.1sp2
- When calling remotely my EJB2 from an external batch (running in a separate VM), I see the message "writeObject(MyBigObject)" so the serialization is done in this case.

<Fr?d?ric Chopard> wrote in message news:[email protected]..
So question is: is there an "undocumented optimization" of the stub/skel generated by weblogic which make local calls when callinga remote method inside the same VM ?
>
Some precisions:
- I'am using weblogic 8.1sp2
- When calling remotely my EJB2 from an external batch (running in a separate VM), I see the message "writeObject(MyBigObject)" sothe serialization is done in this case.
WebLogic 5.x, 6.x and 7.x do call by reference for co-located EJBs by default. 8.1 has this behavior turned off by default. You may
experience call-by-reference optimization in 8.1 only if it has been turned on explicitly in the deployment descriptor.
Hope this helps.
Regards,
Slava Imeshev

View Mapping Result between two Interface Mappings in ccBPM

Hello,
I've got a ccBPM which does two interface mappings. The second one fails. When I redo the steps manually in the Interface Mapping test mode everything works fine. Anyway, I want to get the message from the failed BPM that got out of the first interface mapping, which worked fine in the BPM as well, before entering the second.
Where can I get that message? In Monitoring I can only find messages that got sent.
Thanks for you help!
Regards,
Dirk

Hi,
Please check in Runtime Workbench.
Go to Adapter Engine --> Component Monitoring
Now select your Adapter.
Use Filter and below you will find message ids.
select one and you can see the audit log..where your appln fails.
You can also use SXMB_MONI.
Select the message giving error and in that goto outbound tab..click on link...select view details image button...select the component with error and go to container tab of it....there you will find trace entry....where log of your error will be stored..
Hope it helps.
Best Of Luck
Akhil
Edited by: Akhil Rastogi on Mar 18, 2008 11:08 AM

Sort column by without case sensitive using Comparator interface

Hello,
When i sorted my values of a column in a table it was showing all sorted upper case letters at top rows and all sorted lower case letters on bottom. So i would like to sort values without case sensitive order. Like. A, a, B, b, C, c....
I am using Collection class to sort vector that contains the values of a column as an object and using Comparator interface to sort the values of a column in either ascending and descending order. It facilitates to compare two objects like.
<class> Collections.sort(<Vector contains values of column to be sort>, <Comparator interface>);
and in interface it compares two objects ((Comparable) object).compareTo(object);
Now Let's suppose i have three values say Z, A, a to sort then this interface sorted in ascending order like A, Z, a
but the accepted was A, a, Z. So how can i get this sequence. I would like to sort the values of a column without case sensitive manner.
Thanks
Ashish Pancholi
Edited by: A.Pancholi on Dec 29, 2008 1:36 PM

[http://java.sun.com/javase/6/docs/api/java/lang/String.html#CASE_INSENSITIVE_ORDER]

Can I use two default route in a router

Hi
I have a router which have two isp line.
I want connected two differnt remote site by two isp line.
now i have one default and another static.
i can use two default route like this ?
0.0.0.0 0.0.0.0 201.222.103.x 0
0.0.0.0 0.0.0.0 201.221.102.y 1
Thanks
[email protected]

hi
I feel you wanted to know if you have 2 default routes already in place and about the impact if you put network specific routes.
In this case you can have both the default routes in place in addition to the network specific static routes as i mentioned in my first mail.
Since the most specific route will be used the traffic destined to your remote networks will flow accordingly as per your ip route statements.
If your first link goes down the default route pointing the ISP-1 and the network sepcific route pointing the ISP-1 will go off and by default all the traffic will flow via the second interface which is connected to ISP-2 the behaviour is viceversa if your link to ISP-2 goes down.
By this you will be atleast having some kinda reachability in case of any issues with the corresponding ISPs which is being used to reach the remote network than getting totally disconnected from the remote sites.
regds

Xen using two interfaces

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