Friday, January 4, 2019

Timeout to SAP over VPN

Hi all,

We're having a problem with transfers to an SAP system timing out. We have 5 locations, all connected to a DC via L2 WAN except one is over an internet VPN tunnel. The connection to SAP is from DC over a VPN tunnel as well, all sites can send fine except the one on the public ISP circuit. My thinking is the extra overhead of 2 VPN tunnels is causing so much fragmentation when SAP is running it's process it's getting too many timeouts. Does anyone have any experience with SAP to know if it's sensitive to fragmented packets or does the double VPN and too much overhead seem plausible?

Edit: left out info. The transfers to SAP from the impacted site DO work, they just go very slowly and we get occasional timeouts. This also occurs if we use mobile VPN to transfer to SAP as well.



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