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Christian_89
Contributor III

Created on ‎02-09-2023 06:00 AM

IPSEC VPN Very SLOW

hello together

I have the following problem
over IPSEC VPN the file transfer to a share is very slow.
We are talking about 1mbits to about 25mbits.
The file size is between 500mb and 5000mb.

The local breakout are no problems only via IPSEC I have the problem

From the outside locations (100F each) it goes to the HQ (FortiVM02).

Each remote site is connected with 1000 mbit synchronously.

All Forti have 7.2.3 in use.

IPSEC
Are connected with
IKEv2
AES 256 and SHA 521 in both phases and DH 21 also in both phases.

 

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Christian_89
Contributor III
In response to fdqueiroz

Created on ‎04-15-2023 12:31 AM

I have found the problem.

It was on the switches LACP was set up but only used one interface so there was performance degradation.

View solution in original post

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elynner
New Contributor
In response to Christian_89

Created on ‎09-02-2025 11:16 AM

Can you expound upon this? did you end up disabling LACP? what was your actual fix?

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