IPSEC slow speed

[dimitri.rolin]

Hello,

(at first, sorry for my bad English) ;-)
I've virtual pfsense 2.2 installed on vmware.

I use 1 pfsense as master firewall.
I connect on this firewall using openvpn.

Then this firewall is connected to 6 others pfsense using ipsec
each time i have :
1 *  phase 1
9 *  phase 2 for the vlans.

The problems is, the connexion is working perfectly with 4 other pfsense. But with the 2 others I have slow performance on the IPSEC connexions (+- 50 Kbs)

Does anyone have seens this problem?

Thanks for your answer.

Dimitri

[Eleander]

Same ISP?
Same Phase 1 and phase 2 configs? or different algos? (heavier encryption)
Same internal hardware/switches?

How did you test your throughput?

[cmb]

Enabling MSS clamping (VPN>IPsec, Advanced tab) at 1400 is a good thing to try.