NAtive VLAN?what is the use of vlan?VLAN in trunk link?

what is the use of native VLAN in trunk links? where should i change native vlan from vlan1 to another?
what is the use of untagged native VLAN frame?

Hi,
On ethernet, you can connect more than one device to a port. So when you configure a port as trunk, it expects a vlan tag to arrive. But some times there are devices which dont have the capability to tag the packet and still they need to connect to network. So they can use native vlan to have connectivity. It is not a usual situation, but it helps on some situation where multiple devices connected on a trunk and not all have ability to send tagged frames. Hope this helps.
Please do remember to rate all useful posts.
Thanks,
Madhu

Similar Messages

What is the use of keyword SCAN ABAP-SOURCE

Hello experts,
what is the use of scan abap-source. please explain. what is tokens, statements, levels in that.

Hi
SCAN
This statement is for internal use only.
It cannot be used in application programs.
SCAN ABAP-SOURCE itab1 ...TOKENS INTO itab2
 ...STATEMENTS INTO itab3.
Parts marked with " ..." are interchangeable
Addition 1
... FROM n1
Addition 2
... TO n2
Breaks down the source code table itab1 into tokens not from start to finish, but only from line n1 to line n2.
The additions FROM n1 and TO n2 must, in this order, follow the specification of the source code table itab1.
When using the start specification n1, use the addition WITHOUT TRMAC to ensure that there are no unnecessary database accesses to the table TRMAC.
The end specification n2 is treated as "soft", i.e. a statement that begins on a line <= n2, but ends only on a line > n2, is returned completely.
If the end specification n2 is split in a chain statement, only the split part up to the next comma is returned completely, not the entire chain statement up to the next period.
Negative line specifications are not allowed and result in a runtime error.
A line specification of 0 amounts essentially to no specification.
If n1 number of lines in source code table, the scanner is not called (SY-SUBRC = 2).
If n1 > n2 and n2 > 0, the scanner is not called (SY-SUBRC = 2).

Addition 3
... KEYWORDS FROM itab4
Does not return all statements, only those specified in the key word table itab4.
If the key word table is empty (i.e. it contains 0 lines), all the statements are selected.
The lines of the key word table are treated as a character field.
To select a Native-SQL-statement or a macro definition, you can specify the pseudo key words EXEC_SQL or DEFINE_MACRO. It makes no difference whether the statements EXEC or DEFINE occur as well. Native SQL statements and macro definitions are returned as one statement (of type E or M even if the expansion of a macro definition results in more than one statement.
If the key word table contains a blank line, blank statements are also selected.
Addition 4
... LEVELS INTO itab5
Stores details about each edited source code unit (source code table itab1 itself, expanded include-programs, expanded macro definitions) in the level table itab5.
Specification of a level table makes sense only with the addition WITH INCLUDES.
The level table itab5 must have the structure SLEVEL.
The fields of the structure SLEVEL - and consequently the columns of the level table itab5 have the following meaning:
TYPE
Type of source code unit with the following possible values:
P (Program)
D (Internal DEFINE macro)
R (Macro from table TRMAC)
NAME
Name of source code unit (name of include program, macro name)
DEPTH
Current nesting depth of source code unit (>= 1)
LEVEL
Index of superior (i.e. including or calling) source code unit in the level table (>= 1, if DEPTH >= 2, otherwise 0)
STMNT
Index of superior (i.e. including or calling) statement in the statement table (>= 1, if DEPTH >= 2, otherwise 0)
FROM
Index of first statement of source code unit in the statement table (>= 1)
TO
Index of last statement of source code unit in the statement table (>= 1)
If the source code unit contains include programs or macro calls, the line range [ FROM, TO] in the statement table also covers the statements in subordinate source code units.
Addition 5
... STRUCTURES INTO itab6
Details of the construction of the source text table are given in the structure table itab6.
The structure table itab6 must have the structure SSTRUC.
The fields in SSTRUC (which are also the columns of structure table itab6) have the following meanings:
TYPE
Type of the structure with possible values:
P (Beginning of the source code)
R (Subroutine)
M (Macro, EXEC SQL)
I (Loop)
A (Case distinction)
C (Condition in a case distinction)
J (Goto command)
D (Structured declaration)
E (Event)
S (Follow-on from simple structured statement)
STMNT_TYPE
The statement type of the beginning of the structure. The values are listed in the type pool SCAN in structure SCAN_STRUC_STMNT_TYPE.
KEY_START
Flags whether the start of the structure is described semantically ('X' if there is a special statement, otherwise ' ').
KEY_END
Flags whether the end of the structure is described semantically ('X' if there is a special statement, otherwise blank).
STMNT_FROM
Index of the first statement of the structure in the statement table itab3.
STMNT_TO
Index of the last statement of the structure in the statement table itab3.
Index of the first substructure of the structure in structure table itab6.
STRUC_TO
Index of the last substructure of the structure in structure table itab6.
BACK
Index of the structure in the structure table itab6 that contains the structure as a substructure (0 if the structure is the root structure of a structure tree).
Addition 6
... OVERFLOW INTO c1
The addition is only allowed and required if the token table itab2 has the structure STOKEN or STOKEX.
If a token is too large to be stored in the token table in the field STR, it is placed in the overflow area c1. The offset of the token in the overflow area then lies in the token table in the field OFF1.
Addition 7
... WITH ANALYSIS
Breaks down each token t = a+b(c) according to the logic of the RSYN key word >ANALY into its three components a, b and c.
Offset and length of components a, b and c are stored in the fields LEN1, OFF2, LEN2, OFF3, and LEN3 in the token table. (The offset of OFF1 is always 0 and therefore not required.)
If you specify the addition WITH ANALYSIS, the token table itab2 must have the structure STOKESX, so that the fields LEN1, OFF2, LEN2, OFF3 and LEN3 are available.
If the token table has the structure STOKEX, you must consider the following:
If the whole token exists in the token table, the offset specifications are relative to the token start. If the token is in the overflow area c1, the offset specifications are relative to the start of the overflow area.
Addition 8
... WITH COMMENTS
Returns comments also, with each individual comment representing a token. The system additionally stores entries for each full block of comments in the table itab3, differentiating between comments that occur within statements and those that occur at program level. In itab3, an entry for a comment within a statement always comes before the statement containing the comment.
Example
Look at the following program fragment. The preceding numbers are the indexes of the tokens.
1 * An example *
2 * with scattered comments
6 MOVE
3 * Inserted comment 1
7 X
4 * Inserted comment 2
8 TO
9 Y
5 * Inserted comment 3
SCAN then enters the following values for the components TYPE, FROM and TO (in this order from left to right) into itab3.
'P' 1 2
'S' 3 5
'K' 6 9
If the addition ... WITH COMMENTS is used, the table itab2 must have the line type STOKES or STOKESX.
Addition 9
... WITH INCLUDES
Also breaks down subordinate source code units (included programs, called macros) into tokens.
You should normally combine the addition WITH INCLUDES with the addition LEVELS INTO itab5.
If (at least) one included program does not exist, SY-SUBRC is set to 1 and the relevant INCLUDE statement is flagged in the statement table itab3 by the statement type J (instead of I), but the breakdown process continues. The level table itab5 contains no entry for include-programs that do not exist.
If you combine WITH INCLUDES with WITHOUT TRMAC , TRMAC-Macros are not expanded because the system does not recognize them as subordinate source code units.
When macro calls are expanded, no position specifications are available. The corresponding fields in the token table itab2 and the statement table itab3 are then set to 0.
Addition 10
... WITH TYPE-POOLS
This addition has the same effect as the WITH INCLUDES addition, except that with the former include programs belonging to type groups are broken down into tokens.
Addition 11
.. WITH LIST TOKENIZATION
Tokens of the form (a1, a2, a3) are not returned as tokens but broken down into the elementary components.
Addition 12
... WITHOUT TRMAC
If a statement begins neither with an ABAP/4 key word nor with a DEFINE macro, the system does not check whether this is a TRMAC macro, but assumes an unknown statement. (Unknown statements are flagged in the statement table itab3 with a U in the field TYPE.)
To avoid unnecessary database accesses to the table TRMAC, you should use the addition WITHOUT TRMAC whenever you assume that the source code to be scanned contains unknown statements. Unknown statements are particularly likely to occur if you use the addition FROM n1, because the scanner does not start at the beginning of the source code, but from a specified point.
If you use WITHOUT TRMAC with WITH INCLUDES, TRMAC macros are not expanded because the system does not recognize them as subordinate source code units.
Addition 13
... PROGRAM FROM c2
Addition 14
... INCLUDE INTO c3
Addition 15
... MESSAGE INTO c4
Addition 16
... WORD INTO c5
Addition 17
... LINE INTO n3
Addition 18
... OFFSET INTO n4
The above additions have the same meaning as those for the
SYNTAX-CHECK: statement: c2 is an input field for a program name to be assigned to the source code, while the fields c3, c4, c5, n3 and n4 are output fields in case an error occurs.
To be able to analyze errors without modifying programs, use the additions INCLUDE, MESSAGE, WORD, LINE and OFFSET. These provide information about the errors which have occurred.
Variant 2
SCAN AND CHECK ABAP-SOURCE itab1 ...RESULT INTO itab2.
Parts marked with " ..." are interchangeable
Extras:
1. ... PROGRAM FROM c1 2. ... INCLUDE INTO c2
3. ... MESSAGE INTO c3
4. ... WORD INTO c4
5. ... LINE INTO n1
6. ... OFFSET INTO n2
The syntax of the program in table itab1 is checked. During the check, all of the information from the program, such as statement structures, statements, tokens, data objects, types and do on are placed into the result field. This field must have the type SYSCH_RESULT, which is defined in type group SYSCH. You must therefore declare type group SYSCH in your ABAP-program using a TYPE-POOLS statement.
&ABAP_ADDITION _1&
... PROGRAM FROM c1
&ABAP_ADDITION _2&
... INCLUDE INTO c1
&ABAP_ADDITION _3&
... MESSAGE INTO c3
&ABAP_ADDITION _4&
... WORD INTO c4
&ABAP_ADDITION _5&
... LINE INTO n1
&ABAP_ADDITION _6&
... OFFSET INTO n2
The above additions have the same effect as the corresponding additions in the statement SYNTAX-CHECK: c1 is an input field for a program name to be assigned to the source code, the fields c2, c3, c4, n1 and n2 are output fields, used when errors occur.
To enable you to analyze errors without having to modify the program, you should specify the INCLUDE, MESSAGE, WORD, LINE and OFFSET additions for the information about the error that occurred.
Reward if usefull

What is the use of this form?

Hi all,
What is the use of this form in include RV61B901?
How does this code send any information to the program calling it? Is Sy-subrc global so that main program will know the reuslts?
Code:
FORM KOBED_901.
DATA : l_anzpk LIKE likp-anzpk.
SELECT SINGLE anzpk FROM likp
                      INTO l_anzpk
                      WHERE vbeln = komkbv2-vbeln.
IF l_anzpk NE 0.
    sy-subrc = 4.
    exit.
ENDIF.
sy-subrc = 0.
ENDFORM.
Thanks,
Charles.

Hello,
This form sets the value of sy-subrc(which is global) based
on the value of l_anzpk.
Regards
Greg Kern

What is the use of additon in up to 1 rows in SELECT statement

Hi All,
         What is the use of up to 1 rows in select statement.
for example
SELECT kostl
      FROM pa0001
      INTO y_lv_kostl UP TO 1 ROWS
      WHERE pernr EQ pernr
      AND endda GE sy-datum.
    ENDSELECT.
I'm unable to get in wat situations we hav to add up to 1 rows
please help me out...
Thanks,
santosh.

Hi,
Use "select up to 1 rows" only if you are sure that all the records returned will have the same value for the field(s) you are interested in. If not, you will be reading only the first record which matches the criteria, but may be the second or the third record has the value you are looking for.
The System test result showed that the variant Single * takes less time than Up to 1 rows as there is an additional level for COUNT STOP KEY for SELECT ENDSELECT UP TO 1 ROWS.
The 'SELECT .... UP TO 1 ROWS' statement is subtly different. The database selects all of the relevant records that are defined by the WHERE clause, applies any aggregate, ordering or grouping functions to them and then returns the first record of the result set.
Regards,
Bhaskar

What is the use of Alternative Calculation Type =2 and 4

Dear Friends
In pricing procedure in gross value, Net value for Item and Net value has Alternative calucation type is 2.
What is the use of it?
Without using it these value line are also fetching net value then what is the work of it. Please give me detail information with its effects in pricing condition tab page in sales document.
Thanking You
Arun

Arun biswal,
Correct Biswal. We have at varoius stages within Pricing procedure the "net value" which is calculated. Not only the alternative calculation type "2" is used if you notice carefully they are stored as subtotals at various levels.
For Ex Gross Value --> Subtotal =1 --> Calc type = 2
similarly for Net value for Item --> Subtotal =2 --> Calc type = 2
Net value 2 --> Subtotal =3 --> Calc type = 2
See, these are used to calculate the net value at various levels in pricing. The calculation Type has got a set of routines that will facilitate us in pricing. SAP has provided certain clauclated formulas or routines to facilitate us during calculation within pricing . Here the "2" is used for calculation without tax and store it as subtotal and display it or use it for further calculations.
We can use this "netvalue" amount for further calculations. It is used for clarity purpose when you issue a statement to customer. (like Confirmation order) at various levels like discount amt involved, Freight involved, Rebate amount invloved.....
Even without this Calc type or using sub total u can proceed....
Finally we have TOTAL --> Subtotal =A --> Calc type = 4
In the above line we have Calc type as 4, which means when you use TAX this calc type is used .
Routines are used to facilitate your process....
Regards
Sathya

What is the use of Serializable Interface in java?

Hello friends,
I have one dout and i want to share with u guys:
Why Serializable interface made and actully
what's the use of it?
At which place it become useful ?
It is not contain any method then why it is made?
If anyone have any idea about this then please reply.
Thanks in advace
Regards,
Jitendra Parekh

t is not contain any method then why it is made?To point out to the user of a class (and the programs) that the design of this class is conforming to certain restraints needed for Serialization.

What is the use of Data packet dim with Virtual cube with services

Hi Friends,
Could anybody tell me what is the use of Packet dimension in Virtual cube with services , It cannot contain data persistently ,Just fetch at runtime,Then there is no Physical load happening,Then why it should be automatically created for this??
Message was edited by: Pradeep choudhari

Hi Maik,
Unit dimension will not be created automatically until and unless you have keyfigure referning units..
But my question is : Why should we have data pack dimension , which is useless in this case of Virtual cube with services.It should not be created automatically!! What do you say??

What is the use of Withholding tax identification number field?

Hello SAP Experts,
I posted this question earlier but had to close because of no replies from anybody. Posting it again to see if I am lucky to get some answer this time.
Can someone tell what is the use of field Withholding Tax Identification Number? Does it help with the reporting? Where does it get populated on the report if given at vendor or master record or within the withholding tax customization for company code? What is the difference between creating it in the customization for withholding tax information for company code and vendor/customer master record?
As per SAP: Withholding tax identification number
This is a number issued by the tax authorities per withholding tax type.
This number must be specified in Customizing either:
(a) As part of the withholding tax information defined for the company code, or
(b) As part of the withholding tax information defined in the customer or vendor master record.

Hi Pete,
The only thing that I could check is the content used in US:
See content of this field for US:
LFA1-STCD1 Social security number
LFA1-STCD2 Employer identification number
LFBW-WT_WTSTCD Withholding tax identification number for WT Type
In order to populate it, please kindly check the following:
The reason why you cannot fill in the field WT_WTSTCD in transaction
Fk02 however you can do it in XK02 (Change vendor centrally) can be due
to wrong customizing of the field status group.
Kindly check the following:
SPRO->
Finantial accounting -> Accounts receivable and accounts payable ->
Define screen layout per activity (vendors) -> Change Vendor(Accounting)
Company code data -> W/holding tax data, w/h tax 2 ->
FIELD Withholding tax code,w/h tax 2 will be probably just available to
display. Please, change it to optional entry.
I hope I could be of assistance.
Kind Regards,
Fernando Evangelista

What is the use of HTTPS 8181 port

Hi,
I am wondering what is the use of the port 8181 on the EE5 application server.
the second question. Why the application server open so many port on the same local machine. I agree that for security raison it is a good idea. But does application serveur use tcp connection to communicate between the server thread ?
So it is possible to add a thread in the serveur application to process some internal work. And of course it is possible to include this new thread in the communication process of the server ?
Can we have the map of all the tcp trhead use by the server application.
Regards
Herve Terrolle.

Your app has to run as root to listen on ports up to 1024,
also, some other app (apache?) may already be listening on port 443.
AFAICT port 8181 is just arbitrarily chosen, it might as well have been port 4430, or any other free port above 1024.

What is the use of commit work and rollback work

hao friends,
what is the use of commitwork and rollback work where we can use these open sql statements .
thanks,
anji

hi all
i have written the following code in my development system to change the records of my database.
SELECT * FROM zyikostl INTO TABLE itab.
LOOP AT itab INTO wtab.
    tabix = sy-tabix.
    DO.
      READ TABLE itab INTO ktab WITH KEY kostl_alt = wtab-kostl_neu.
      IF sy-subrc = 0.
        wtab-kostl_neu = ktab-kostl_neu.
        MODIFY itab FROM wtab INDEX tabix.
        CONTINUE.
      ELSE.
        EXIT.
      ENDIF.
    ENDDO.
ENDLOOP.
MODIFY zyikostl FROM TABLE itab.
In the development system i have only few records its working fine,but when it is been moved to test system there are 2500 records in the database so the report is taking much time(more than 5 hours )
i sthere any solution for this ....
thanks,
vaasu.

What is the use of 'ALTER DATABASE CLOSE'?

Hello Everybody,
SQL*Plus: Release 10.1.0.2.0 - Production on Ma Aug 15 21:28:30 2005
Copyright © 1982, 2004, Oracle. All rights reserved.
Connected to:
Oracle Database 10g Enterprise Edition Release 10.1.0.2.0 - Production
With the Partitioning, OLAP and Data Mining options
SQL> conn / as sysdba
Connected.
SQL> startup force
ORACLE instance started.
Total System Global Area 171966464 bytes
Fixed Size 787988 bytes
Variable Size 145750508 bytes
Database Buffers 25165824 bytes
Redo Buffers 262144 bytes
Database mounted.
Database opened.
SQL> select status from v$instance;
STATUS
OPEN
SQL> alter database close;
Database altered.
SQL> select status from v$instance;
STATUS
MOUNTED
SQL> alter database open;
alter database open
ERROR at line 1:
ORA-16196: database has been previously opened and closed
If i have to shutdown the instance and database then
WHAT IS THE USE OF 'ALTER DATABASE CLOSE' ?
I need explanation. Why should i shutdown?
Dont give me this answer.
ORA-16196: database has been previously opened and closed
Cause: The instance has already opened and closed the database, which is allowed only once in its lifetime.
Action: Shut down the instance.

If you read the documentation you will see that there is no ALTER DATABASE CLOSE command.
This is an undocumented Oracle command, which we are not supposed to use. Consequently we are not allowed to complain about the way that it works. Instead we're supposed to use SHUTDOWN IMMEDIATE.
Cheers, APC

What is the use of end routine in bi 7.0

hi friends,
what is the use of end routine in bi 7.0. what scenerio we use end routine.
Thanking u
suneel.

hi Suneel,
check
http://help.sap.com/saphelp_nw70/helpdata/en/e3/732c42be6fde2ce10000000a1550b0/frameset.htm
End Routine
An end routine is a routine with a table in the target structure format as input and output parameters. You can use an end routine to postprocess data after transformation on a package-by-package basis. For example, you can delete records that are not to be updated, or perform data checks.
If the target of the transformation is a DataStore object, key figures are updated by default with the aggregation behavior Overwrite (MOVE). You have to use a dummy rule to override this.
hope this helps.

What is the uses of this programe(accelerometer)?

what is the uses of this programe(accelerometer) in N95 original or N95 8g and from where I can get it?

This is Rotateme, but needs to be signed.
http://www.bysamir.fr/rotateme/
This is the movingball which just needs to be installed (doesn't require signing).
http://research.nokia.com/files/MovingBall_Example.sisx
Nokia N95
V 20.0.015
0546553

What is the use of access level

Hi Experts,
What is the access level and what is use of each option in access level
1 Application
2 Superior component
3. Top Component
4. Sap
5. Global
and in Details section what is the use Properties tab
1. Application Component
2. Software Component
3. Development Package
4. Settings Class
Please explain Each option use.
Thank you in advance,
Srini M.

Hi Srini,
just read the documentation (although the current status on SAP Help Portal isn't really up-to-date):
1. [Entry point|http://help.sap.com/saphelp_nw70ehp1/helpdata/en/cc/85414842c8470bb19b53038c4b5259/frameset.htm]
2. [Setting an Access Level|http://help.sap.com/saphelp_nw70ehp1/helpdata/en/32/6aba9c49fd41a5a14f710e121220f1/content.htm]
W/r to "Application Component" etc., docu on Help Portal is definitely not sufficient. Here, the following applies:
An application offers attributes for the application component and the software component. The application component and software component have to be the same as defined for the development package. Application and software component are automatically derived from the development package if they are not set explicitly.
For the definition of the development package, application component, and software component, we recommend that you choose the same values that are in effect for the software solution that you want to enhance by a new BRFplus application. This simplifies all activities related to the software infrastructure, especially transports.
CU
Claus

Why do we use open URL in default browser function? What are the uses of it?

Why do we use "open URL in default browser" function? What are the uses of it?

kdm7 wrote:
Okay.
So can we keep a web button to access the www.ni.com ? So that web site opens only when button pressed?
P.S I,m a newbie.
Yes, you can also, e.g. include a help file or manual as html and open that in the browser.
/Y
LabVIEW 8.2 - 2014
"Only dead fish swim downstream" - "My life for Kudos!" - "Dumb people repeat old mistakes - smart ones create new ones."
G# - Free award winning reference based OOP for LV

NAtive VLAN?what is the use of vlan?VLAN in trunk link?

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