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.
