Redundancy Problems

I am trying to implement redundancy on two computers using Lookout v6.0.2. One computer (primary) has an unlimited development license, and the other (secondary) has a unlimited runtime license. The computers also have client licenses installed on both. The server process is loaded on both machines using the same name. When I developed the client process I used a full pathname for everything versus Symbolic Link, because I have a large amount of discrete controls (pushbuttons, etc.) connected to field devices that I wanted both computers to access.
The client and server processes work fine during normal operation with no problem.
I have created a process called "redundancy" on the client machine per the developer's manual. This process is setup to load the server process in the event of a failure on the primary, but it doesn't work. My state file is being updated from machine to machine properly, but the server process never loads on the client machine.
I have tried to check for syntax or other errors in the loader and monitor blocks and everything looks OK. I have tried shutting down the process only, Lookout, and powering down the primary computer with no success.
Any suggestions would be appreciated.

Has anyone had any success with having the process files (*.l4p) on a shared volume? (and using redundency using the Loader and Monitor objects)
I tryed this and it did not work...
Create a test process, and name it Master. Save Master on a network drive/folder.
Create a test process, and name it Monitor. Save Monitor on a network drive/folder. (yes, the loader is pointed to the Master file on the shared network drive/folder, and yes, i can open/run Master by clicking File/Open on this computer).
Run Master on one computer
Run Monitor on another computer
Shut down Master
Observations: Monitor notices that Master is not running any more, but Loader doesn't do anything, and no alarm is generated.
Make these changes:
copy process file Master to the local c:\program files\national instruments\lookout 6.1\
change the loader to run the Master file from the local hard drive.
Try experiment again.
Everything works as expected
any ideas? Can anyone duplicate this issue?
thanks
Rich

Similar Messages

I have a serious contacts redundancy problem. First I have multiple email account formats, e.g., 2011 MacOutlook, 2008 Entourage, 2007 Window Outlook, iPhone Exchange and these are all connected to the same account. The problem is I had up to 15 contact

I have a serious contacts redundancy problem.
First I have multiple email account formats,e.g., 2011 MacOutlook, 2008 Entourage, 2007 Window Outlook, iPhone Exchange and these are all connected to the same account. The problem is I had up to 15 contacts for the same person.
I deleted the Entourage contacts as that seemed to be the program that was causing the problems. When I synced this morning, now all my contacts are gone from every where.
How can I restore to my last back? If I restore, it will ask to restore to the back that was just made… which has no contacts?
Help would be greatly appreciated !!

I have a serious contacts redundancy problem.
First I have multiple email account formats,e.g., 2011 MacOutlook, 2008 Entourage, 2007 Window Outlook, iPhone Exchange and these are all connected to the same account. The problem is I had up to 15 contacts for the same person.
I deleted the Entourage contacts as that seemed to be the program that was causing the problems. When I synced this morning, now all my contacts are gone from every where.
How can I restore to my last back? If I restore, it will ask to restore to the back that was just made… which has no contacts?
Help would be greatly appreciated !!

XSLT Redundancy Problem

Hi all,
I have a serious problem with redundancy in XSLT. In my conversion XML input file, I have many tags like that:
<tag1 name="..." date1a="..." date1b="...">
</tag1>
<tag2 name="..." date2="..." date2b="...">
</tag2>
All with different tag names and different attribute names (although the attributes hold similar information).
Now what I need is a template that could be applied to a combination of tag-attribute, e.g. to tag1, using the values of date1a.
My current solution has a template for each combination - which is very redundant.
Any idea how to optimize this without changing the input file? I thought of global variables to store the attribute value but they are "final", so that does not work. Local variables seem to be limited to a single template, so they cannot be used either.
Any help will be appreciated,
Ralf

Hi,
This is a typical line from the input file:
<WebAppM3.SingleInfo xmi.id="a71" xmi.uuid="7e33f8b02e0f30f5:00a981ca:000000f425774313:8181" Name="StaticPage" Entity="a67 a66" SubView="a72 a73">
</WebAppM3.SingleInfo>
This is a typical transformation rule for it (the relevant rules are for Entity and SubView:
<xsl:template match="WebAppM3.SingleInfo">

<Model.Class annotation="" isRoot="false" isLeaf="true" isAbstract="false"
visibility="public_vis" isSingleton="false">
<xsl:copy-of select="@xmi.id"/>
<xsl:copy-of select="xmi.uuid"/>
<xsl:attribute name="name">
<xsl:value-of select="@Name"/>
</xsl:attribute>
<Model.Namespace.contents>
<xsl:apply-templates select="descendant::WebAppM3.M2Attribute"/>
<xsl:apply-templates select="attribute::Entity" mode="link"/>
<xsl:apply-templates select="attribute::SubView" mode="link"/>
</Model.Namespace.contents>
</Model.Class>
</xsl:template>
<xsl:template match="@Entity" mode="link">

<xsl:variable name="data" select="stringhelp:tokenize(.)"/>
<xsl:variable name="anc_id" select="ancestor::WebAppM3.SingleInfo/@xmi.id"/>
<xsl:variable name="targets" select="../WebAppM3.DataSet"/>
<xsl:for-each select="$data/token">
<Model.Reference annotation="" scope="instance_level"
visibility="public_vis" type="a23" isChangeable="true">
<xsl:attribute name="name">Entity_<xsl:value-of select="."/></xsl:attribute>
<xsl:attribute name="xmi.id">
<xsl:value-of select="$anc_id"/>_<xsl:value-of select="."/>
</xsl:attribute>
<xsl:attribute name="xmi.uuid">
<xsl:value-of select="$anc_id"/>_<xsl:value-of select="."/>
</xsl:attribute>
<xsl:attribute name="referencedEnd">
TEST
</xsl:attribute>
<Model.StructuralFeature.multiplicity>
<Model.MultiplicityType lower="0" upper="-1" is_ordered="false" is_unique="false" />
</Model.StructuralFeature.multiplicity>
</Model.Reference>
</xsl:for-each>
</xsl:template>
<xsl:template match="@SubView" mode="link">

<xsl:variable name="data" select="stringhelp:tokenize(.)"/>
<xsl:variable name="anc_id" select="ancestor::WebAppM3.SingleInfo/@xmi.id"/>
<xsl:variable name="targets" select="../WebAppM3.DataSet"/>
<xsl:for-each select="$data/token">
<Model.Reference annotation="" scope="instance_level"
visibility="public_vis" type="a23" isChangeable="true">
<xsl:attribute name="name">Entity_<xsl:value-of select="."/></xsl:attribute>
<xsl:attribute name="xmi.id">
<xsl:value-of select="$anc_id"/>_<xsl:value-of select="."/>
</xsl:attribute>
<xsl:attribute name="xmi.uuid">
<xsl:value-of select="$anc_id"/>_<xsl:value-of select="."/>
</xsl:attribute>
<xsl:attribute name="referencedEnd">
TEST
</xsl:attribute>
<Model.StructuralFeature.multiplicity>
<Model.MultiplicityType lower="0" upper="-1" is_ordered="false" is_unique="false" />
</Model.StructuralFeature.multiplicity>
</Model.Reference>
</xsl:for-each>
</xsl:template>
Cheers,
Ralf

4507R+SUPII_Plus Redundancy Problem

Dear Professionals
I have
4507R + 2 X SUPII_Plus + cat4000-i9s-mz.121-19.EW1.bin
Following dump seems to be not configured correctly to redundancy.
What can I do to fix this problem.
------------------ show running-config --------------
redundancy
mode rpr
main-cpu
auto-sync startup-config
auto-sync standard
7507R_SUPII_Plus#show redundancy stat
my state = 13 -ACTIVE
peer state = 1 -DISABLED
Mode = Simplex
Unit = Primary
Unit ID = 1
Redundancy Mode (Operational) = RPR
Redundancy Mode (Configured) = RPR
Split Mode = Disabled
Manual Swact = Disabled Reason: Simplex mode
Communications = Down Reason: Simplex mode
client count = 4
client_notification_TMR = 60000 milliseconds
keep_alive TMR = 9000 milliseconds
keep_alive count = 0
keep_alive threshold = 18
RF debug mask = 0x0
7507R_SUPII_Plus#redundancy force-switchover
There is no STANDBY present. Failed to force switchover
Best Regards

The problem is with the following missed commands in your global configuration... Assuming Active RSP in slot 2, Standby RSP in Slot 3 and both RSP's have Slot 0 flash memory cards.
R(config)#hw-module slot 2 image slot0:
R(config)#hw-module slot 3 image slot0:
R#hw-module sec-cpu reset
Refer the following links for more information...
http://www.cisco.com/en/US/products/sw/iosswrel/ps1612/products_feature_guide09186a0080080a6f.html
http://www.cisco.com/univercd/cc/td/doc/product/core/cis7505/rte_swit/6586rsp8.htm#213565

DLSw redundancy problem

| |
****** ******** | |
* *--CPA1--*7206-1*--| ******** |
*IBM * ******** |--*7206-3*--|
* * | ******** |
*HOST* | |
* * ******** |--******** |
* *--CPA2--*7206-2*--| *7206-4*--|
****** ******** | ******** |
| |
7206-1 and 7206-2 manage the the connection to the IBM host with a CPA card eich other.
7206-3 and 7206-4 manage the connection between the central site and the remotes sites via frame-relay network, they are border peer and DLSw load balancing coded. also manage the connection between a LAN of the central site and with bridge-group to reach an IBM HOST via 7206-1 and 7206-2.
The following is the configurations:
7206-3:
dlsw local-peer peer-id 3.3.3.3 group 3 border keepalive 0 promiscuous
dlsw load-balance round-robin
dlsw remote-peer 0 tcp 1.1.1.1 timeout 90
dlsw remote-peer 0 tcp 2.2.2.2 timeout 90
dlsw cache-ignore-netbios-datagram
dlsw bridge-group 1
7206-4:
dlsw local-peer peer-id 4.4.4.4 group 3 border keepalive 0 promiscuous
dlsw load-balance round-robin
dlsw remote-peer 0 tcp 1.1.1.1 timeout 90
dlsw remote-peer 0 tcp 2.2.2.2 timeout 90
dlsw cache-ignore-netbios-datagram
dlsw bridge-group 1
The probleme is:
In the central site, i see a slowness in the connection, and it is random, sometime a connction is very fast, other time it is very slow, and it can take up to 1,5 minute to connect.
After all that, i coded a dlsw redundancy in the 7206-3 and 7206-4 FastEthernets, the problem still exist in the LAN, and it cause a trouble in some remotes sites connected with frame-relay, that loose a connection to HOST.
Thank You for your help.

1. To make load balancing work you will have to add the following commands:
dlsw timer explorer-wait-time ...
source-bridge ring-group ...
Ring-group number must be the same on 7206-3 & 7206-4 - it prevents unnecessary explorer flooding.
2. If bridge-group 1 on 7206-3 & 7206-4 shares the same Ethernet domain you must use DLSw+ Ethernet Redundancy feature.
3. Border peers in the same group must be in full-mesh and all members in the group must peers with all border peers in this group. On 7206-3 & 7206-4 you will have to add the following commands:
(7206-3)# dlsw remote-peer 0 tcp 4.4.4.4 ...
(7206-4)# dlsw remote-peer 0 tcp 3.3.3.3 ...

Power Redundancy problem for cisco 3750 stack switches

Hi Team,
I have installed and configured cisco 3750X series switches in stackwise. Those are having dual power supply.
Power redundancy test performed:
1. Removed one of the power supply and inserted it back.
2. once the first power supply is ready, removed another power supply and switch got rebooted.
please find the below stack-power output:
JP2-RDC-DIS-02#sh stack-power detail
Power Stack           Stack   Stack    Total   Rsvd    Alloc   Unused Num Num
Name                  Mode    Topolgy Pwr(W) Pwr(W) Pwr(W) Pwr(W) SW   PS
Powerstack-2          SP-PS   Stndaln 700     477     223     0       1    2
Powerstack-1          SP-PS   Stndaln 700     477     223     0       1    2
Power stack name: Powerstack-2
    Stack mode: Power sharing
    Stack topology: Standalone
    Switch 2:
        Power budget: 223
        Power allocated: 223
        Low port priority value: 22
        High port priority value: 13
        Switch priority value: 4
        Port 1 status: Not connected
        Port 2 status: Not connected
        Neighbor on port 1: 0000.0000.0000
        Neighbor on port 2: 0000.0000.0000
Power stack name: Powerstack-1
    Stack mode: Power sharing
    Stack topology: Standalone
    Switch 1:
        Power budget: 223
        Power allocated: 223
        Low port priority value: 22
        High port priority value: 13
        Switch priority value: 4
        Port 1 status: Not connected
        Port 2 status: Not connected
        Neighbor on port 1: 0000.0000.0000
        Neighbor on port 2: 0000.0000.0000
Can anyone help what went wrong here?
Thanks
Manish

Cosmetic bug
CSCui21029    3750X Stack no standalone stays in running configureation as standalone
Symptom:
When you are configuring a 3750x stack and initially putting it into a stack ring topology by configuring the following.
Switch(config)#stack-power switch 1
Switch(config-switch-stackpower)#sta
Switch(config-switch-stackpower)#no stan
Switch(config-switch-stackpower)#no standalone
You will see that in the running configuration it shows up as standalone mode
stack-power switch 1
switch mode: standalone
stack-power switch 2
switch mode: standalone
Conditions:
3750X stacks with any license level
Workaround:
none

Redundancy Problem!

How Clear the Session After we complete the Execution..
session.invalidate();
is not working ...
rs2=st.executeQuery("select deptname from department where collid='"+coll1+"' ");
while(rs2.next())
//deptname= rs2.getString(1);
data1.add(rs2.getString(1));
i++;
out.print("dept"+dept);
s.setAttribute("dep", data1);
HEre am setting array values,and getting session on another page..here am facing issue as it filling up my drop down box when am using previous dropdown box
in first dropdown am using submit button..so when i use change dropdown it automatically moves servlet page,and again it appending the same values againg,so redundancy occurs here..
so i want to clear Session..how it is possible

you only give us suggestion for filling another drop down by selecting one drop down value in jsp..
its ur suggestion..
First of all: there is no such thing as a combo box (an editable dropdown) in HTML. You probably mean a plain vanilla dropdown (the HTML <select> element).
That said, you should not mingle raw Java code in a JSP file. Use Java classes for raw Java code.
There are several ways to achieve this:
1) Submit form to a servlet during the onchange event of the 1st dropdown (you can use Javascript for this), let the servlet get the selected item of the 1st dropdown as request parameter, let it obtain the associated values of the 2nd dropdown from the database, let it store them in the request scope. Finally let JSP/JSTL display the values in the 2nd dropdown.
2) Print all possible values of the 1st and 2nd dropdown out as a Javascript array and make use of a Javascript function to fill the 2nd dropdown based on the selected item of the 1st dropdown during the onchange event of the 1st dropdown. No form submit and no server cycle is needed here.
3) Make use of XMLHttpRequest in Javascript to fire an asynchronous request to a servlet during the onchange event of the 1st dropdown, let the servlet get the selected item of the 1st dropdown as request parameter, let it obtain the associated values of the 2nd dropdown from the database, return it back as XML or JSON string. Finally let Javascript display the values in the 2nd dropdown through the HTML DOM tree (the Ajax way, as suggested before).
Edited by: BalusC on 2-mrt-2009 0:04 (typo)
http://javascript.gakaa.com/table-cols.aspx

RAC redundancy problem

Hi,
We have a RAC system which is running on Windows Server 2008 R2 and the oracle version is 11g.
When we close one of the nodes, other node can not take the sessions and loads then our database becomes unavailable.
What could be the reasons?

what version 11g??? ALWAYS POST THE FULL VERSION NUMBER. (and yes, I was yelling!!).
Did you properly configure SCAN? https://www.lmgtfy.com/?q=oracle+scan+pdf
Proper DNS configuration
Proper {local | remote}_listener parameters. And RAC on Windows?? Seriously????

I have a problem for cisco catos 4232 switch.

i have entered the enable mode in cisco catos 4232 switch,but always there have been a remarks appearing all the time as follows:
2006 Feb 23 14:23:34 %SYS-4-P2_WARN: 1/Host 02:01:00:00:00:00 is flapping betwee
n port 3/34 and port 3/33
why?
thank you!
Best Respects!
guominquan

Hi Friend,
The message indicates that your Catalyst 4500/4000 switch has learned a MAC address that already exists in the content-addressable memory (CAM) table, on a port other than the original one. This behavior repeatedly occurs over short periods of time, which means that there is address flapping between ports.
If the message appears for multiple MAC addresses, the behavior is not normal
If the error message appears for one or two MAC addresses, locate these MAC addresses in order to determine the cause. Issue the show cam mac_addr command in order to identify from where these MAC addresses have been learned. In this command, mac_addr is the MAC address that the error reports as flapping.
After you determine between which ports this MAC address is flapping, track down the MAC address. Connect to the intermediate devices between your Catalyst 4500/4000 and the device that has the problem MAC address. Do this until you are able to identify the source and how this device connects to the network.
Note: Because the MAC address is flapping between two ports, track down both of the paths.
These are other issues that can cause this message to appear
1) Server NIC redundancy problem
2) HSRP
3) EtherChannel misconfiguration
4) Host reflects packets back onto the network
Check this link for complete details of this problem and how to troubleshoot
http://www.cisco.com/warp/customer/473/176.html#subtopic1k
HTH, if yes please rate the post.
Ankur

Distiller 9 issue after a new update to Adobe Acrobat Pro (version 9.3)

After installing the update, I was asked to reboot my HP Pavilion dv9617nr Notebook Computer (Windows Vista Home Edition). After the reboot, I was given an error message which explained that the ICC Color profiles in Adobe Distiller 9 could not be found and that I should reinstall my Adobe Acrobat 9 software. My question is: Yes I probably should reinstall my software but this will only be a temporary solution that will become a redundant problem when I again attempt the same update that caused the probllem initially. How can I simply back out the update? What if anything has been done to replace the update that caused the problem. Has there been any posts to this or other forums about this update problem? Please help me resolve this issue.

Adobe Tech support was most helpful on this. First download the updated
Distiller ICC profile files at:
http://www.adobe.com/support/downloads/thankyou.jsp?ftpID=4075&fileID= 3790
Unzip the file and copy only the *.icc files (without regard to the subfolders that they are in - in other words, take the files out of each of the subfolders) to the followng folder in Windows 7:
c:\windows\system32\spool\drivers\color
These new files will probably overwrite some old ones.
This solved the problem for me.
This is actually the best solution though I found that instead of copying all the .icc files to the windows\sys... folder, all you need to do is copy the 3 Video files from the RGB folder (VideoHD.icc, VideoNTSC.icc, and VideoPAL.icc). Once you add these three files to c:\windows\system32\spool\drivers\color you will be good to go.
It seems that this was an error on the part of Adobe in that there is no reason to include Video files for printing. Nevertheless, the distiller will look for these and return the ICC profile error message if those files are not present.

Macbook is always trying to connect to an other one which is not switched on

Hello,
I have a redundant problem :
My Mac Book is always trying to connect to an other one which is not switched on.
I used Drive mounter, but I deleted the device that my Mac has tryed to connect with.
Have you a solution to stop this behavior
Thanks

This sounds like it may be a question for the developers of Drive Mounter, as it sounds like that may still be trying to connect to that remote volume.
You could rule out other things before contacting them by checking your login items in System Preferences -> Users & Groups. Make sure that volume is not in that list. Also, check any other apps or services that may be automatically making use of that volume, such as Time Machine.

Dynamic Link Blending Modes

Hello Premiere Pro´s
Is there a way where an After Effects Dynamic Linked comp imported into Premiere Pro can preserve its blending modes to the outside layers in a sequence?
A little like the logic of the continuously rasterize option that exists in After Effects.

That´s what i was suspecting, but that feature would be a great add. ( Plus solving another workflow issue i´m having also with dinamic lynk. )
My feature is very heavy on the use of dynamic linking. And in this case i have a Premiere sequence "edit" that i would like to be imported into AFX via dinamic link - then compose FX on top and then re-import that AFX Comp into the same Premiere Project into a "final" sequence. But this workflow gives me loop redundancy problem that makes Premiere dont update its dynamic linking, unless i close and open the app.
So my second try was importing the "effects ae comp" into premiere and hope there could be some workaround where the blending modes could pass into dinamic link, like the logic of the continuously rasterize option.
But thanks for the reply and help, Jo.
Regards

Rman optimization conflicting with obsolete backups?

Hello,
Suppose I have the following configuration.
I have a partitioned table with each (month-)partition on a different tablespace. I need to keep 10yrs of data. Switch a tablespace with e.g. April2008 data to read-only.
Rman set REDUNDANCY 1 and OPTIMIZATION ON.
Now redundancy 1 should keep only 1 backup of each file wouldn't it?
I do a backup database: it backups every file.
I do a backup database again: it backups every file again.
I do a backup database third time: it says "skipping file n allready backed up 2 times".
Now I do a report obsolete: it marks one of the backups op my file with April2008 data as obsolete.
After performing a delete obsolete, it is gone.
Next day I do a backup database: it backups every file again, so I have two!! backups of file n.
I would like to have only 1 and just 1 backup of the file, and it should never be backed up anymore. The redundancy cannot be set to zero.
How to deal with this?

I think we disagree on this. I can make a single-partition rman backup if:
It is on it's own tablespace, on it's own datafile. No problem with that. It is only the redundancy-problem I have.
Even if I configure redundancy to 1, it makes two backups, and one of these is obsolete. This obsolete gets deleted in a 'delete obsolete' action, and a new obsolete will be created with the next backup.
How would you backup the database with 120 partitions as I described above? Each day a full backup??

Ping failes for fqdn with two records, first record unavailable

Scenario is:
10.80.56.147 = DOWN (unavailable)
10.80.56.148 = UP (available)
bash-2.05# nslookup cscs.floreffe.se
Server: idns.floreffe.se
Address: 10.80.56.186
Name: cscs.floreffe.se
Addresses: 10.80.56.147, 10.80.56.148
bash-2.05# ping cscs.floreffe.se
no answer from cscs.floreffe.se
Why does ping fail? Why does not secondary IP address being used.

BadboyRune wrote:
Hi,
Thanks for your answer, I have alredy disabled nscd on the system. So Solaris doesn't make some kind of check if the first IP is reachable, or saves both addresses? No. That is uncommon in most UNIX applications. The application is usually trying to operate on a single address, and uses names just to look up the address that it will use.
There are more robust applications that become more complex with dynamic name changes supported, real-time failover support, etc, but that's not an OS feature, it's handled per-application. 'ping' does not do so. TCP connections are bound to a specific address. For an application to use TCP and multiple addresses, it has to recognize the problem, then re-establish a new connection with the host, etc... This is not commonly done.
The reason for the question in the first place are the redundancy problems we have faced. If the first address isn't reachable, the second one has to be used...
What's the application? Why is the address going down? In some cases this could be handled through the use of IPMP or maybe through a load-balancer application/appliance. But that would depend on your network topology and the actual problem that you're encountering.
Darren

%SW_MATM-4-MACFLAP_NOTIF: Host 00ff.ffff.ffff in vlan 112 is flapping between port Gi3/0/1 and port Fa2/0/46.....

Hi Guys,
Iam seeing above issue on two of my switches connected to core switch ....i know there are quite of few discussion open on same issue but mine is diff....
i see same issue on two switches connected via core swicth on same vlan ( 112)....when i do mac address lookup it says the mac thats generating this error is invalid so cant track the source of this mac....also just saw on topoogy change notification on core traced it back to originating switch which is also generating this error but dnt see any change on the switch that is generated topology change notification....prob is vlan 112 all interface on both switches conected via core are generating this message so five interfaces each .....any expert advise on how to approach it as i cant get to source port generating this as nearly five ports in vlan 112 on bloth switches generating this error. thanks
Apr 15 15:56:08: %SW_MATM-4-MACFLAP_NOTIF: Host 00ff.ffff.ffff in vlan 112 is flapping between port Fa3/0/46 and port Gi3/0/1
Apr 15 15:56:50: %SW_MATM-4-MACFLAP_NOTIF: Host 00ff.ffff.ffff in vlan 112 is flapping between port Fa2/0/46 and port Gi3/0/1
Apr 15 15:56:51: %SW_MATM-4-MACFLAP_NOTIF: Host 00ff.ffff.ffff in vlan 112 is flapping between port Fa3/0/46 and port Gi3/0/1
Apr 15 15:58:29: %SW_MATM-4-MACFLAP_NOTIF: Host 00ff.ffff.ffff in vlan 112 is flapping between port Fa2/0/46 and port Gi3/0/1
Apr 15 15:59:27: %SW_MATM-4-MACFLAP_NOTIF: Host 00ff.ffff.ffff in vlan 112 is flapping between port Gi3/0/1 and port Fa2/0/46
Apr 15 15:59:45: %SW_MATM-4-MACFLAP_NOTIF: Host 00ff.ffff.ffff in vlan 112 is flapping between port Fa2/0/46 and port Gi3/0/1
Apr 15 16:00:14: %SW_MATM-4-MACFLAP_NOTIF: Host 00ff.ffff.ffff in vlan 112 is flapping between port Gi3/0/1 and port Fa3/0/46
Apr 15 16:00:36: %SW_MATM-4-MACFLAP_NOTIF: Host 00ff.ffff.ffff in vlan 112 is flapping between port Fa2/0/46 and port Gi3/0/1
Apr 15 16:02:40: %SW_MATM-4-MACFLAP_NOTIF: Host 00ff.ffff.ffff in vlan 112 is flapping between port Fa3/0/46 and port Gi3/0/1
Apr 15 16:03:22: %SW_MATM-4-MACFLAP_NOTIF: Host 00ff.ffff.ffff in vlan 112 is flapping between port Fa3/0/46 and port Gi3/0/1
Apr 15 16:03:31: %SW_MATM-4-MACFLAP_NOTIF: Host 00ff.ffff.ffff in vlan 112 is flapping between port Gi3/0/1 and port Fa2/0/46
Apr 15 16:04:03: %SW_MATM-4-MACFLAP_NOTIF: Host 00ff.ffff.ffff in vlan 112 is flapping between port Fa3/0/46 and port Gi3/0/1
Apr 15 16:04:34: %SW_MATM-4-MACFLAP_NOTIF: Host 00ff.ffff.ffff in vlan 112 is flapping between port Fa2/0/46 and port Gi3/0/1
Apr 15 16:04:41: %SW_MATM-4-MACFLAP_NOTIF: Host 00ff.ffff.ffff in vlan 112 is flapping between port Gi3/0/1 and port Fa2/0/46
Apr 15 16:05:05: %SW_MATM-4-MACFLAP_NOTIF: Host 00ff.ffff.ffff in vlan 112 is flapping between port Fa2/0/46 and port Gi3/0/1
Apr 15 16:05:13: %SW_MATM-4-MACFLAP_NOTIF: Host 00ff.ffff.ffff in vlan 112 is flapping between port Gi3/0/1 and port Fa3/0/46
sh spanning-tree vlan 112
VLAN0112
Spanning tree enabled protocol rstp
Root ID    Priority    8192
             Address     001e.13c1.5a70
             Cost        3004
             Port        109 (GigabitEthernet3/0/1)
             Hello Time   2 sec Max Age 20 sec Forward Delay 15 sec
Bridge ID Priority    49264 (priority 49152 sys-id-ext 112)
             Address     001f.261c.1d80
             Hello Time   2 sec Max Age 20 sec Forward Delay 15 sec
             Aging Time 300
UplinkFast enabled but inactive in rapid-pvst mode
Interface        Role Sts Cost      Prio.Nbr Type
Fa2/0/46         Desg FWD 3019      128.104 P2p
Fa1/0/46         Desg FWD 3019      128.50   P2p
Gi3/0/1          Root FWD 3004      128.109 P2p
Fa3/0/46         Desg FWD 3019      128.158 P2p
Fa3/0/47         Desg FWD 3100      128.159 P2p
Fa3/0/48         Desg FWD 3019      128.160 P2p

ASAK Mohammed,
There are lots of thread discussing about this, you should do a search before creating a new post.
Anyway, this is how you approach these types of flapping:
1. Is the the given MAC flapping in the log flapping only 1 time or you see it multiple times over a reasonobly short time?
   If you see it only once or once every 2-3 hours this might be not an issue worth being investigated. Sporadic one time flapping are expected in L2 broadcast domain.
If you see it often continue to step 2.
2. Identify and locate the flapping mac in vlan 125: 3270.990a.a504
Is the mac of a dual-homes server using some kind of load balancing algorithm (active/active) for which the same address is used from both NICs?
If yes, the message is not and issue but just an indication. Fix this type of LB (make it active/standby or make sure the server uses 2 different mac addresses, one per NIC) or if it is not possible leave it like this.
3. Is the MAC a the wireless NIC of a PC?
Make sure that the user was not moving from one AP to another (flapping is normal in this case)
4.
See if you have increasing TCN's and check if they are coming from the same interface.
From this point on you keep on troubleshooting STP until you find the offending link (likely going up and down) or the switch. You also need to check if STP in vlan112 is coherent with the actual L2 topology you have.
=====================================================
2- Some more details information which might be helpfull to you.
http://www.cisco.com/en/US/products/hw/switches/ps663/products_tech_note09186a
00801434de.shtml#subtopic1k
Problem
The switch generates %SYS-3-P2_ERROR: Host xx:xx:xx:xx:xx:xx is flapping
between ports? messages, where xx:xx:xx:xx:xx:xx is a MAC address.
Description
This example shows the console output that you see when this error occurs:
%SYS-4-P2_WARN: 1/Host 00:50:0f:20:08:00 is flapping between port 1/2 and port
4/39
Use the steps and guidelines in this section in order to understand and
troubleshoot the cause of this error message.
The message indicates that your Catalyst 4500/4000 switch has learned a MAC
address that already exists in the content-addressable memory (CAM) table, on
a port other than the original one. This behavior repeatedly occurs over short
periods of time, which means that there is address flapping between ports..
If the message appears for multiple MAC addresses, the behavior is not normal.
This behavior indicates a possible network problem because the MAC addresses
move quickly from one port to another port before the default aging time. The
problem can be looping traffic on the network. Typical symptoms include:
·        High CPU utilization
·        Slow traffic throughout the network
·        High backplane utilization on the switch
For information on how to identify and troubleshoot issues with spanning tree,
refer to Spanning Tree Protocol Problems and Related Design Considerations
<http://www.cisco.com/en/US/tech/tk389/tk621/technologies_tech_note09186a00800
951ac.shtml> .
If the error message appears for one or two MAC addresses, locate these MAC
addresses in order to determine the cause. Issue the show cam mac_addr command
in order to identify from where these MAC addresses have been learned. In this
command, mac_addr is the MAC address that the error reports as flapping.
After you determine between which ports this MAC address is flapping, track
down the MAC address. Connect to the intermediate devices between your
Catalyst 4500/4000 and the device that has the problem MAC address. Do this
until you are able to identify the source and how this device connects to the
network.
Note: Because the MAC address is flapping between two ports, track down both
of the paths.
This example shows how to track both of the paths from which this MAC address
has been learned:
Note: Assume that you have received this message and you have begun to
investigate it.
%SYS-4-P2_WARN: 1/Host 00:50:0f:20:08:00 is flapping between port 1/2 and port
4/39
In order to track down how this MAC address was learned from both ports,
complete these steps:
1.     Consider port 1/2 first, and issue the show cam dynamic 1/2 command.
If you see the MAC address 00:50:0f:20:08:00 in the list of the MAC addresses
that have been learned on this port, determine if this is a single host that
is connected or if there are multiple hosts that are registered on that port.
2.     On the basis of whether there is a single or multiple hosts,
investigate the device:
o   If there is a single host (00:50:0f:20:08:00) that is connected, check the
other port that is registered and see if the host is dually attached to the
switch.
In this example, the other port is port 4/39.
o   If the host has connections to other devices that can eventually lead back
to this switch, try to track down the intermediate devices.
With Cisco devices, issue the show cdp neighbors mod/port detail command. The
output provides information about intermediate devices.
Here is sample output:
Cat4K> (enable) show cdp neighbors 1/2 detail
Port (Our Port): 1/2
Device-ID: brigitte
Device Addresses:
IP Address: 172.16.1.1
Novell address: aa.0
Holdtime: 171 sec
Capabilities: ROUTER
Version:
Cisco Internetwork Operating System Software
IOS (tm) 2500 Software (C2500-JS-L), Version 12.0(7)T, RELEASE SOFTWARE (fc2)
Copyright (c) 1986-1999 by cisco Systems, Inc.
Compiled Mon 06-DEC-99 17:10 by phanguye
Platform: cisco 2500
Port-ID (Port on Neighbors's Device): Ethernet0
VTP Management Domain: unknown
Native VLAN: unknown
Duplex: half
System Name: unknown
System Object ID: unknown
Management Addresses: unknown
Physical Location: unknown
Cat4K> (enable)
3.     Establish a Telnet session with the device and follow the path of the
MAC address.
In this example, the IP address is 172.16.1.1.
Repeat the procedure for all MAC addresses that the error message reports as
flapping.
4.     Create a simple diagram of the source device with that MAC address and
of the physical connections (the Catalyst 4500/4000 ports) from which and to
which this MAC address is flapping.
The diagram enables you to determine if this is a valid port and path for your
network layout.
If you verify that both ports on which the MAC address is flapping provide a
path toward that network node, there is a possibility that you have a
spanning-tree failure issue. Refer to Spanning Tree Protocol Problems and
Related Design Considerations
<http://www.cisco.com/en/US/tech/tk389/tk621/technologies_tech_note09186a00800
951ac.shtml> in order to isolate and troubleshoot this loop.
In large networks in which multiple hosts from multiple vendors are
interconnected, difficulty arises as you try to track down the host with use
of just the MAC address. Use the search utility for the IEEE OUI and
Company_id Assignments <http://standards.ieee.org/regauth/oui/index.shtml> in
order to track down these MAC addresses. This list is the front end of the
database where IEEE has registered all MAC addresses that have been assigned
to all vendors. Enter the first three octets of the MAC address in the Search
for: field of this page in order to find the vendor that is associated with
this device. The first three octets in the example are 00:50:0f.
These are other issues that can cause this message to appear:
·        Server NIC redundancy problem?There is a server with a dual-attached
NIC that misbehaves and does not follow the standards. The server uses the
same MAC address for both ports that connect to the same switch.
·        Hot Standby Router Protocol (HSRP) flapping?Flapping HSRP can cause
these messages to appear in the Supervisor Engine console. If you notice that
HSRP implementation in your network is unstable, refer to Understanding and
Troubleshooting HSRP Problems in Catalyst Switch Networks
<http://www.cisco.com/en/US/tech/tk648/tk362/technologies_tech_note09186a00800
94afd.shtml> in order to resolve the problem.
·        EtherChannel misconfiguration?A misconfigured EtherChannel connection
can also cause these symptoms. If ports that the flapping message reports are
members of the same channel group, check your EtherChannel configuration and
refer to Understanding EtherChannel Load Balancing and Redundancy on Catalyst
Switches
<http://www.cisco.com/en/US/tech/tk389/tk213/technologies_tech_note09186a00800
94714.shtml> in order to troubleshoot the configuration.
·        Host reflects packets back onto the network?The reflection of packets
back onto the network by a host can also cause flapping. Typically, the root
cause of this packet reflection is a broken NIC or any failure of the physical
interface of the host that is connected to the port.
If the reflection of packets by the host is your root cause, obtain a sniffer
trace and examine the traffic that goes to and from the ports on which the
messages have appeared. If a host reflects packets, you typically see
duplicate packets in the trace. The duplicate packets are a possible symptom
of this flapping of the MAC address.
Refer to Configuring SPAN and RSPAN
<http://www.cisco.com/en/US/docs/switches/lan/catalyst4000/6.3and6.4/configura
tion/guide/span.html> for details on how to configure a port for use with a
sniffer.
·        Software or hardware defect?If you have tried to troubleshoot the
flapping message with the instructions in this section but you still notice
the issue, seek further assistance from Cisco Technical Support
<http://www.cisco.com/en/US/support/tsd_cisco_worldwide_contacts.html> . Be
sure to mention and provide documentation of the information that you have
collected while you followed the steps. This information makes further
troubleshooting quicker and more efficient.
HTH
REgards
Inayath
*Plz rate all usefull posts.

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