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Network


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Network



Bandwidth requirement of ISP to connect to SAP server through VPN


A D V E R T I S E M E N T

We are in the process of implementing SAP for our overseas sales offices.   However, the Server will be situated at our country. We want our overseas sales office to connect to our SAP Server through VPN. What should be the optimum internet bandwidth that they should use at their place to connect to our SAP server? Does SAP recommend any standard bandwidth for this process? 

From our experience, there is no general rule that one can follow, as several factors will affect the connectivity

1. No of hops between your ISP and that of the remote site, the more hops the poorer the performance, even having large bandwidth may not improve the performance by much if there are numerous hops in between.

2. Is the Internet connectivity solely used for your VPN or other purposes such as web surfing, email etc, other traffic can consume large amount of traffic thus causing your SAP performance to be poorer

3. ISP's bandwidth to the public internet - If the ISP is heavily over subscribed, and has limited bandwidth connecting to the international network, you will find that you will not be able to get the international throughput you subscribed for as such, performance may be poor even you have paid for a line with a large bandwidth

4. No of users at your remote office using the VPN - In general the lines we use are 64kbps for sites with approx 3-5 users, we are also using ADSL lines with 512kbps connectivity and they enjoy close to local Lan performance for SAP.

 


See from which network IP address and host name a user has logged on


 

To see the network IP address from which a user has logged on, 

perform the following steps: 

Call transaction OS01

click "Presentation Server" button, "Change View" button. 
 

If you are using Citrix, you will not be able to view the user individual IP address as it will be the same Citrix IP address.
 

To check the speed and quality of the user's network connection, 

select the desired presentation server and click "10 X Ping" button. 

11/22/2007
 

No System name and transaction code in SM04


If you have more than one application server, use AL08 instead of SM04.

or

It is because they are at the logon screen which has established a connection.

You will notice that the transaction code shown when there is no user name is SESSION_MANAGER.

This shows you which workstations out there have the login screen up but have not yet entered a user name and password.

The transaction column shows the Last executed transaction code. 

Sometimes your users will have multiple sessions open. If they do, to the system, it is the same as multiple logins as it relates to the resources used etc. 

So the user name will show up more than once in AL08.

Under the application server they are logged into, each instance of that user name on that application server represents a session open. 

For instance if you run AL08, you will have your name show up at least twice on the application server you are logged into. 

One will show AL08 and the other will not have a transaction next to it. 

Then you will notice your user name showing up on all other application servers with no transaction. This is because you are using AL08

 



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