Hi all,
We have 3 VPN tunnels running between 3 sites, two with an ASA-5506, one with an ASA-5505 (although the problem is similar between the different models). Despite our internet connections maxing at 400Mbps, and interoffice transfers at reasonable (Windows) speeds, intersite transfers max out at 20Mbps.
I have read a lot on these community boards in my attempts to fix the issue. My attempts have involved:
- Changing the MTU on the Interface (values from 1400-1500)
- Chainging the IKEv2 Fragmentation settings
- Enable & Disable Fragmentation
- Setting Fragmentation MTU (values between 1380-1460)
- Changing the IPSec Prefragmentation Policies settings:
- Enable/Disabling Pre-Fragmentation
- Changing the DF-Bit Policy between Clear & Copy
No combination of these has resulted in a speed increase. I'm happy to provide more configs. I mainly use the ASDM to configure these but I can do some CLI if needed.
I'm sure I'm missing something, please help me to find out what!
Cheers,
David