DLSW Ethernet Redundancy - Master/Slave preemptive

I am wondering if there is a way to control the behavior of the master dlsw router if it fails and circuits are established on the slave dlsw router. The lab testing I have done shows that once the master dlsw router is back online, the circuits teardown from the slave dlsw router and re-establish on the master dlsw router.
Is there a way to control this behavior so that additional LLC disruptions are avoided when the master router comes online?

I don't think there is a way to control this behavior

Similar Messages

DLSW ethernet redundancy for multiple vlans

Can dlsw ethernet redundancy support mutliple vlans with the following configuration?
host dlsw router1 host dlsw router2
| |
local dlsw router 1 local dlsw router2
| |
ethernet switch1-------ethernet switch2
Ethernet switch1 and 2 are supporting multiple vlans and connected to local dlsw router1 and 2 through 802.1Q. SNA support is required for the vlans of ethernet switch1 and 2 .
We found that configuration of dlsw ethernet redundancy is not allowed on the 802.1Q sub-interface of the local dlsw router1 and 2. In this case, how can dlsw ethernet redundancy can be supported for SNA server attached to multiple vlans? Can you provide us some reference / sample for dlsw ethernet redundancy to support SNA servers attached to different vlans in a switch environment.
Thanks.

I think that I understand the problem. I am thinking the following:
dlsw local-peer peer-id 2.2.2.2 promiscuous
dlsw transparent switch-support
interface Ethernet0
mac-address 0000.3333.3333
dlsw transparent redundancy-enable 9999.9999.9999 master-priority 10
dlsw transparent map local-mac 0000.6666.0000 remote-mac 0200.eca2.0000 neighbor 0000.5555.5555
interface Ethernet1
mac-address 0000.4444.4444
dlsw transparent redundancy-enable 9999.9999.0001 master-priority 10
dlsw transparent map local-mac 0000.6666.0001 remote-mac 0200.eca2.0000 neighbor 0000.7777.7777
Of course, you need an ethernet interface per VLAN. If you need DLSw ER over dot1q interface, please contact the local Cisco Sales Rep or partner. You are not the first one to ask for it. Hope that there is a strong business case to initiate the new feature.

DLSW Ethernet Redundancy timers

Hi,
I am running DLSW Ethernet redundancy on 2 x 7204 VXR routers. The one acts as the master for the odd VLAN's and the other as the master for the even VLAN's. The 7204's connect to 2 x 6509 switches via ISL trunking.
The problem I have is that if I disable DLSw on one of the 7204's, it takes quite a long time for the worksession stations to re-establish their sessions.
Any help welcome..
Dean Young.
T-systems South Africa
[email protected]

Thanks. I did change the parameter, but it did not make any difference.
I am running PCOMMS 5.0.
What I found was the following:
I connect to the mainframe via 7204_1 and then disable DLSW on this router. It takes exactly 1minute and 25 seconds for my session to be re-established via the backup 7204.
I was wondering if there is a timer that will speed up this process. It seems as if the source and destination MAC binding has to be released and then setup via the backup 7204.
Regards
Dean

DLSW Ethernet Redundancy Transparent Cache

I have corrupt entries in the ethernet redundancy transparent cache. These are causing problems establishing new sessions.
Can I clear the entries individually and how long does the cache take to time out?

Hi,
the "dlsw clear transparent circuit" was introduced with CSCdv16277, it is in ios 12.1(11.5) and higher, 12.2(6.4) and higher and it also rolled into 12.3.
Please note the "circuit" option is hidden. you can not see it with the ? asking for help in the parser.
in respect to the origin of the erroneous cache entries. They can be a bug on itself. But they also can be a result of a configuration not exactly like it should be.
I would advice to open a case with the tac and have the configurations sanity checked.
If this is something you can reproduce at will than we would certainly be very interested how you get into this state.
Dlsw ethernet redundancy was quite modified a bit in the last 2 years. Depending on what version of code you run you might need to go to a higher level to pick up all the current maintenance.
My personal few is a recent 12.2 image or even better a recent 12.3 image.
thanks...
Matthias

DLSW Ethernet Redundancy

Hi,
When configuring DLSW for ER using the global commands (transparent switch-support) and the interface commands (mac-address, transparent redundancy-enable and transparent map)
are the traditional DLSW ethernet commands (dlsw bridge-group) still necessary or not ?
If not why ? Does the ER implicit contains this commands ?
Thnx
Omar

No, the traditional bridge commands are not applicable. In fact, once you enable DLSW ER, you will not be able to enable the traditional bridge-group commands. The ER takes care of receiving the packets into the DLSW process.

DLSw - MSFC - Redundancy

Do all the same rules apply when doing Dlsw redundancy with backup msfc's? For example, do I need the following types of commands:
dlsw transparent redundancy-enable xxxx master-priority x
and
dlsw transparent map local-mac xxxx remote-mac xxxx neighbor xxxx
and
dlsw transparent switch-support

Yes.
You may want to look into Single Router Mode (SRM) at http://www.cisco.com/univercd/cc/td/doc/product/lan/cat6000/sw_6_3/confg_gd/redund.htm for your MSFC redundancy. You lose MSFC load balancing but simplify the configuration greatly since you don't need to use HSRP or DLSw Transparent Redundancy.
hope this helps
tim

OSPF - Master/Slave - DR/BDR Election

Routers on the same ethernet segment - during bootup (if running OSPF) does the Master/Slave part happen after the DR/BDR are elected?
Also - If I brought up a new router into that segment (while the other routers are already on and converged) does the master/slave process happen still between this router and the others? I have read a few articles, including the OSPF section in the routing tcp/ip book, but still a bit confused as to when the master/slave happens in relation to the dr/bdr election.
Thanks

Hi,
Yes dr/bdr can also become slave. Election is based on ip address and node with higher ip address becomes Master
ExStart.
In this state, the router and its neighbor establish a master/slave relationship and determine the initial DD sequence number in preparation for the exchange of Database Description packets. The neighbor with the highest interface address becomes the master.
Please see debug outputs below. there is ospf neighborship between R1 (9.0.0.1) and R2(9.0.0.2). Have configured "ip ospf priority 0" on R2 so that it can not become DR/BDR. But still since this router is having higher ip address, it became Master and R1 became Slave.
R2_7606B#show ip ospf nei
Neighbor ID Pri State Dead Time Address Interface
9.0.0.1 1 FULL/DR 00:00:34 9.9.12.1 GigabitEthernet1/17
Aug 29 07:00:07.673: OSPF: 2 Way Communication to 9.0.0.1 on GigabitEthernet1/17, state 2WAY
Aug 29 07:00:07.673: OSPF: Backup seen Event before WAIT timer on GigabitEthernet1/17
Aug 29 07:00:07.673: OSPF: DR/BDR election on GigabitEthernet1/17
Aug 29 07:00:07.673: OSPF: Elect BDR 0.0.0.0
Aug 29 07:00:07.673: OSPF: Elect DR 9.0.0.1
Aug 29 07:00:07.673: DR: 9.0.0.1 (Id) BDR: none
Aug 29 07:00:07.673: OSPF: GigabitEthernet1/17 Nbr 9.0.0.1: Prepare dbase exchange
Aug 29 07:00:07.673: OSPF: Send DBD to 9.0.0.1 on GigabitEthernet1/17 seq 0x2C8 opt 0x52 flag 0x7 len 32
Aug 29 07:00:07.673: OSPF: Rcv DBD from 9.0.0.1 on GigabitEthernet1/17 seq 0xD62 opt 0x52 flag 0x7 len 32 mtu 1500 state EXSTART
Aug 29 07:00:07.673: OSPF: First DBD and we are not SLAVE
Aug 29 07:00:07.673: OSPF: Rcv DBD from 9.0.0.1 on GigabitEthernet1/17 seq 0x2C8 opt 0x52 flag 0x2 len 272 mtu 1500 state EXSTART
Aug 29 07:00:07.673: OSPF: NBR Negotiation Done. We are the MASTER
Aug 29 07:00:07.673: OSPF: GigabitEthernet1/17 Nbr 9.0.0.1: Summary list built, size 12
Aug 29 07:00:07.673: OSPF: Send DBD to 9.0.0.1 on GigabitEthernet1/17 seq 0x2C9 opt 0x52 flag 0x1 len 272
Aug 29 07:00:07.701: OSPF: Rcv DBD from 9.0.0.1 on GigabitEthernet1/17 seq 0x2C9 opt 0x52 flag 0x0 len 32 mtu 1500 state EXCHANGE
Aug 29 07:00:07.701: OSPF: Exchange Done with 9.0.0.1 on GigabitEthernet1/17
Aug 29 07:00:07.701: OSPF: Synchronized with 9.0.0.1 on GigabitEthernet1/17, state FULL
Aug 29 07:00:07.701: %OSPF-5-ADJCHG: Process 100, Nbr 9.0.0.1 on GigabitEthernet1/17 from LOADING to FULL, Loading Done
Aug 29 07:00:07.701: OSPF: Register neighbor 9.9.12.1 on interface GigabitEthernet1/17 with BFD
Aug 29 07:00:07.701: OSPF: GigabitEthernet1/17 Nbr 9.0.0.1: Clean-up dbase exchange
Aug 29 07:00:08.173: OSPF: Build router LSA for area 0, router ID 9.0.0.2, seq 0x80000552, process 100
Aug 29 07:00:08.477: OSPF: BFD Up event intf GigabitEthernet1/17 nbr 9.9.12.1
Aug 29 07:01:34.230: OSPF: We are not DR to build Net LSA for interface GigabitEthernet1/17
Aug 29 07:01:34.230: OSPF: Build network LSA for GigabitEthernet1/17, router ID 9.0.0.2
--Pls dont forget to rate helpful posts--
-Akash

MASTER/SLAVE PATTERN: how to stop slave loop without stop main loop

Hi All, I am studying the master/slave loop and saw an examples are like this (only master block shows)
From this case, as I understand, if we click "set" button, slave loop will run. If we click this button again to mak it "Flase", the slave loop will be stopped as well as the main loop will be stopped as well.
Now if I have a multi-function main loop, I just want to start or stop slave loop when click "set" button, how can I do it? Thank you very much!

bhl3302 wrote:
From this case, as I understand, if we click "set" button, slave loop will run. If we click this button again to mak it "Flase", the slave loop will be stopped as well as the main loop will be stopped as well.
Your understanding is completely wrong. There is nothing in the image you show that would stop either loop. In this situation the "set" button would normally have a latching mechanical action, meaning that when it is pushed, it will stay true until it is read once, at which point it will return to false. Placing the control terminal inside the event case causes the terminal to be read and resets the button to false. With a latching mechanical action, there will be only one event generated even though the boolean will change value twice (from false to true, and from true to false). You'll never have a situation where you push the button once to set it true, and again to set it false. However, even if the mechanical action is switching, not latching, it still won't make a difference here - the event case does the same thing whenever the value changes, regardless of whether it's true or false.

Master/Slave Settings?

Hello Everyone. I need a little guidance here. The original HD in my B&W, Rev 2, is a Maxtor 6.03GB, ATA, Model 90648D3. I have it partitioned, running Classic and OS 10.2.8. I also have a second SCSI drive, a Quantum Atlas 35GB that I've been using as storage but it's almost full. I decided to get a large HD so I recently purchased a Seagate Cheetah 73GB Ultra-2 SCSI. The drive is an 80 pin but came with a 68 pin SCSI adapter. i thought that the two SCSI drives, with different IDs of course, would work so I installed the drive, thinking that since it was SCSI that I wouldn't have the Master/Slave issue, however I can't boot from the new drive at all. I've tried everything, short of standing on my head, with no success. I would really like to have classic on one of the drives and Tiger on the other but the drives only show up when I reconnect the Maxtor and boot from it. Does anyone know what the problem is here?
As always, any help is always appreciated! Thank you.

Ummm,
Look like you did all the step correctly, but do you use an upgrade card?, because I saw it on your specs at the bottom of youe thread that "B&W G3 .. upgraded to G4", if that is so you are out of luck base on this page :
http://www.apple.com/macosx/techspecs/
Maybe somebody would have a trick to install it using emulator software like xfacto or else, but I haven't try that and I heard it will chunk or disable some of Tiger feature, so what is the point of using Tiger if it is half a man it used to be..
Try to use your original processor first to install the system and after that, restart while pressing the mouse to pop the installer disk out, and press option to give you the option for start up disk. if you are too late, just restart again (after you take the installation disk out) by pressing the reset button or pull and plug back the power cable (not recommended) and hit option key until it give you start up disk option.
IF it still not coming up, maybe tiger doesn't support either your hd or scsi card for boot up.
Hope it help now.

Master-Slave design Implementation

Hi,
I am trying to design a master-slave system with the following attributes:
1. Linux Master box having all the Java code.
2. At least two Windows XP Professional Slave boxes (no Java code on any of these)
Front end screens on Master would contain a text fields for IP Address and Java program to be executed. On a click of button, the slaves (who's IP Address was entered in the Master screen text field) would get the request to execute the given Java program, a given number of times. Once executed, each slave would turn the results in to the master via a file. After all the slaves have turned in their results, Master would consolidate the results, work another program on the results and re-delegate tasks to the slaves. The steps would stop iterating only when an exit criteria specified by the program has been met.
If we were to restrict all code to only the master box, what could be the lucidly possible ways to achieve this design?
Thanks!

You will need some machanism to send the programs to slaves atleast temperarly in order to be executed there.
Or you will have to provide a vay for the programs to access the required respurces (files , ect..) in the slaves and let the programs run in the master.

Master-Slave Problem: Please Help

I am having a problem getting master/slave repositories set up for synchronization.
My MDM server environment is Solaris with Oracle 10.2 database.
MDM version is 5.5.41.58 (5.5 SP05).
I create a repository. I unarchive my data into it. I create a slave repository from it. I go into Data Manager and change the description of one product in the master repository. In the Console, the server log has the following message:
Master Server failed to log change because of error: The new transaction id is less than the last transaction id. (code 4289454080).
Has anybody had the same issue? Any clues as to what the problem and/or fix is?
Thanks in advance.

Hello Simon,
Thank you for taking the time to respond.
The unarchive process involved the following: we have a production catalog running MDM 4.0.58. We had an SAP consultant assist in migrating our catalog to MDM 5.5 SP05. This was done using a local server running Windows and SQL Server. From the Windows MDM 5.5, I made an archive. I transferred it to the Solaris/Oracle environment. Using the Console I did the unarchive.
One interesting thing to note: when MDM 5.5 SP05 was installed on Solaris, the "Modifications" directory was not created. Initial attempts to synchronize gave a different error. I determined that the directory was missing and had our data center admin create it. He then stopped the MDM server and restarted it. Then I deleted my master and slave repositories and started over. And then got the error referenced above.
Running the CLIX command gives the following:
52 for the master and 50 for the slave.
In the server log, the only errors I see (other than the one about the transaction id's) are when starting the master and slave repositories I see:
SERVICE 'xxx', SCHEMA 'yyy', ERROR CODE=1002 ||| ORA-01002: fetch out of sequence Last CMD: SELECT PermanentId, Id, F153, F154, F163, F164, F353, F387, F414 FROM A2i_40
In the assertion log, there is nothing at the time of creating the slave. When starting the slave, there are many messages relating to accelerators. At the time when I was changing the data in the master, there are messages from A2iIndexedTransactions.cpp (lines 647, 119, 96, and 231).
If you need any more info, let me know.
Thanks again for your help.

What DQS column locations & DQ master/slave settings do I pick in 10.1 EDK?

I am attempting to duplicate the FPGA synthesis flow using XST and ACE to boot Solaris on a Digilent board. I encounter some steps, warnings, and errors listed below that are not covered in the documentation I have. In following section 6.2 of the DV Guide,
after first running
rxil -device=XC5VLX110 sparc
I opened the ML505 project that I found in the Release 1.6 location at $DV_ROOT/design/sys/edk/system.xmp using XPS 10.1 (required to be 9.1i or later), which updated the project (I believe from EDK 9.2 in OpenSPARC 1.6) to the current release, including some manual updates required to be made because of incompatible cores as described in file Version_Changes.log:
The following files will be modified:
system.mhs
system.mss
The following changes will be made:
Core microblaze 7.00.b will be replaced by 7.10.a
Core plb_v46 1.00.a will be replaced by 1.02.a
Core mdm 1.00.a will be replaced by 1.00.b
Driver emaclite 1.11.a will be replaced by 1.12.a
The following changes need to be made manually by the user:
Core xps_ethernetlite 1.00.a needs to be replaced by 2.00.a
Core mpmc 3.00.b needs to be replaced by 4.00.a
Core clock_generator 1.00.a needs to be replaced by 2.00.a
In following the next step:
XPS 10.1 ³ Hardware ³ Generate Bitstream
I get warnings and errors in the XPS log file:
Check port drivers...
WARNING:MDT - PORT:IWAIT CONNECTOR:ilmb_LMB_Wait -C:\Xilinx\10.1\EDK\hw\XilinxProcessorIPLib\pcores\microblaze_v7_10_a\data\microblaze_v2_1_0.mpd line 196 - No driver found. Port will be driven to GND!
WARNING:MDT - PORT:DWAIT CONNECTOR:dlmb_LMB_Wait -C:\Xilinx\10.1\EDK\hw\XilinxProcessorIPLib\pcores\microblaze_v7_10_a\data\microblaze_v2_1_0.mpd line 232 - No driver found. Port will be driven to GND!
WARNING:MDT - PORT:bscan_tdo1 CONNECTOR:bscan_tdo1 -C:\Xilinx\10.1\EDK\hw\XilinxProcessorIPLib\pcores\mdm_v1_00_b\data\mdm_v2_1_0.mpd line 197 - No driver found. Port will be driven to GND!
WARNING:MDT - PORT:I_ADDRTAG CONNECTOR:ilmb_M_ADDRTAG -C:\Xilinx\10.1\EDK\hw\XilinxProcessorIPLib\pcores\microblaze_v7_10_a\data\microblaze_v2_1_0.mpd line 194 - floating connection!
WARNING:MDT - PORT:D_ADDRTAG CONNECTOR:dlmb_M_ADDRTAG -C:\Xilinx\10.1\EDK\hw\XilinxProcessorIPLib\pcores\microblaze_v7_10_a\data\microblaze_v2_1_0.mpd line 235 - floating connection!
WARNING:MDT - PORT:FSL0_S_CLK CONNECTOR:ccx2mb_0_to_microblaze_0_FSL_S_Clk -C:\Xilinx\10.1\EDK\hw\XilinxProcessorIPLib\pcores\microblaze_v7_10_a\data\microblaze_v2_1_0.mpd line 332 - floating connection!
WARNING:MDT - PORT:FSL0_M_CLK CONNECTOR:microblaze_0_to_ccx2mb_0_FSL_M_Clk -C:\Xilinx\10.1\EDK\hw\XilinxProcessorIPLib\pcores\microblaze_v7_10_a\data\microblaze_v2_1_0.mpd line 337 - floating connection!
WARNING:MDT - PORT:bscan_tdi CONNECTOR:bscan_tdi -C:\Xilinx\10.1\EDK\hw\XilinxProcessorIPLib\pcores\mdm_v1_00_b\data\mdm_v2_1_0.mpd line 190 - floating connection!
Constructing platform-level connectivity ...
ERROR:MDT - IPNAME:mpmc INSTANCE:DDR2_SDRAM PORT:MPMC_Clk0_DIV2 -
C:\Xilinx\10.1\EDK\hw\XilinxProcessorIPLib\pcores\mpmc_v4_00_a\data\mpmc_v2_1
_0.mpd line 2158 - ASSIGNMENT=REQUIRE is defined in the MPD. You must specify
a connection in the MHS.
ERROR:MDT - IPNAME:mpmc INSTANCE:DDR2_SDRAM PARAMETER:C_MEM_DQS_IO_COL -
C:\Xilinx\10.1\EDK\hw\XilinxProcessorIPLib\pcores\mpmc_v4_00_a\data\mpmc_v2_1
_0.mpd line 197 - ASSIGNMENT=REQUIRE is defined in the MPD. You must specify
a value in the MHS.
ERROR:MDT - IPNAME:mpmc INSTANCE:DDR2_SDRAM PARAMETER:C_MEM_DQ_IO_MS -
C:\Xilinx\10.1\EDK\hw\XilinxProcessorIPLib\pcores\mpmc_v4_00_a\data\mpmc_v2_1
_0.mpd line 198 - ASSIGNMENT=REQUIRE is defined in the MPD. You must specify
a value in the MHS.
The sourceless connector error disappeared after I made the selections:
Xilinx Platform Studio > System Assembly View tab > Ports tab > DDR2_SDRAM > MPMC_Clk0_DIV2 > Make External
For the two remaining parameter errors I can choose:
Xilinx Platform Studio > System Assembly View tab > Configure IP...
Interface tab > Memory Interface Generator (MIG) Settings tab >
PDF Datasheet button leading to documentation of the parameters
and
C_MEM_DQS_IO_COL
C_MEM_DQ_IO_MS
For the ML505 board, what do I choose as a column location of left/center/right (00/01/10) for each of 8 DQS pins?
What do I choose as a value of master/slave (1/0) for each of 64 DQ pins?
A different top level block
rxil -device=XC5VLX110 iop_fpga
results in
XST ERROR : Could not open $DV_ROOT/design/sys/iop/iop_fpga/xst/iop_fpga.flist at $DV_ROOT/tools/perlmod/rxil,1.1 line 196.
Edited by: sparcMT1 on Dec 15, 2008 9:04 PM

Hi sparcMT1,
I'm not sure what the problem is. When we read in the 9.2 project into 10.1, it updated cores with very few problems.
One thing you can try is to do only the automatic updates. For example, even though XPS says that "these changes need to be made by the user", just leave the MPMC with version 3.0. I'm looking at one of our projects, and it seems that we did just that.
formalGuy

Satellite Pro 6100: What drive and connection is supported - Master, Slave or CSEL?

Hello,
i want to install a Pioneer DVR-K14L DVD writer.
After the installation, the notebook show me an
error during the initialisation.
It is possible to use this type of Slimline DVD writer?
What kind of modus is important (master, slave or cable-select)?
Thank you and
best regards
oelauge

Hi
I assume you get an IDE# 1 error message. Am I right?
The fact is that not all drives are compatible with the notebooks.
I'm not sure which settings the supported drive should have. But I surmise it's could be a CSEL.
However, I have found this DVD-RW drive which should be compatible; the part number is P000366780
http://www.getpartsonline.com/p000366780.html
But unfortunately, there is nothing about the pin assignment and the settings.
If you want to be 100% sure about the supported devices on your notebook so you should ask the Toshiba service partner in your country for the details

LMS 3.0.1 Master / Slave upgrade

Hi,
We have two LMS servers 3.0.1 deployed in Master/Slave mode. And are working properly. But we are unable to add Cisco rtr2900 series router for its configuration managemnet.Current RME version is 4.1.1.
I want to go for a device update online or can be downloaded in psu_download folder. I have a confusion that
Should I upgrade Common Services (RME devices list) in the same Master/Slave mode or i need to setup both in standalone mode. Which one should be preferred.
Will it be enough to update RME 4.1.1 device list in LMS 3.0.1 or i must go for RME 4.3 (which requries all packages updates i mean LMS 3.2) becuase Cisco 2951 Router and Cisco 2911 Router can be added to current version of RME 4.1.1 by online update to CISCOWORKS LMS 3.0.1 and Cisco 2921 Routers and Cisco 2901 Routers can be added the updated version of CISCOWORKS LMS 3.2. Our requirement configuration mangemnet of Cisco rtr2901 and Cisco rtr2911
Supported Device List for LMS 3.2
http://www.cisco.com/en/US/partner/docs/net_mgmt/ciscoworks_lan_management_solution/3.2/device_support/table/lms32sdt.html#3.0.1-27
Supported Device List for LMS 3.0
http://www.cisco.com/en/US/docs/net_mgmt/ciscoworks_lan_management_solution/3.0.1/device_support/table/lms301sdt.html
Thanks & Regards

You should upgrade RME software on both machines and update the devices packages on both machines.
This is not related to if the are master or slave from a DCR point of view
Cheers,
Michel

What, exactly, does the "Master Slave Config" VI do?

Hi,
I have LV 6.0 and I'm trying to use two NI 6110 boards in a master-slave relationship so that they use the same clock when acquiring analog input. I've found documentation and example on how to do this using the "Route Signal" VI and the "AI Clock Config" VI. All of this work well for me, but I came accross a mention of a "Master Slave Config" VI in the "VI and Function Reference >> Data Acquisition VIs >> Calibration and Configuration" second of the Labview help. The info supplied by this help documention is meager, but there are hints that it might be useful to me and I'd like to figure out what exactly it does. Unfortunately, I can't seem to find any more info about it at the NI website, nor can I find an
y example of how it is used. I found the VI itself in "C:\Program Files\National Instruments\LabVIEW 6\vi.lib\Daq\misc.llb" and discovered that the diagram is very simple. It just calls a DLL routine.
Does anybody have any info on the "Master Slave Config" VI?

The Master Slave Config VI configures one device as a master device and any remaining devices as slave devices for multiple-buffered analog input operations.
The master device sends a trigger or clock signal to the slave device(s) to control the slave device sampling. In a multiple-buffer acquisition, you must enable the slave device before the master device to make sure the slave device always responds to a master signal. If you enable the master device first, it can send a signal to the slave devices before they can respond. You are responsible for the initial startup order. You should always start the master device last. The Master Slave Configuration VI makes sure LabVIEW arms the master device last for each subsequent buffer acquired during a multiple-buffer
acquisition. This is the only help I could find.
I have never used this VI and always use the Route Signal VI because it is a very simple VI to use. I believe the Master Slave Config VI is useful when you don't want to use the Route Signal VI multiple times when you're synchronizing multiple devices.

DLSW Ethernet Redundancy - Master/Slave preemptive

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