Slow upload speed with 2 wan

pdsgomes

Hi,

My pfsense: Netgate 7100

Pfsense : 172.19.32.252
WAN1 - 192.168.2.254
WAN2 - 172.19.32.253

My host: 172.19.32.7

If my windows GW is pfsense and I make a rule to go out with WAN1, my download/upload connection is OK, like 100/100 mbit/s

I I change the rule to go out with WAN2, my download speed is 200 mbit/s (ok) but upload is like 0,1 mbit/s

If I change my windows GW to 172.19.32.253 my download/upload speeds are 200/200 which is OK.

What Im doing wrong here?

Note: No traffic shapper configured, also no limiters

Kind Regards
Pedro

stephenw10

It looks like you probably have an asymmetric route. Your client pfSense and the WAN2 gateway are all on the same subnet. Assuming that is a /24?

Steve

pdsgomes

@stephenw10 They are in the same subnet.

stephenw10

Ok, well of you are outbound NATing that traffic from pfSense to WAN2 you might be OK. I could still imagine it receiving and ICMP redirect though. It you're not outbounf NATing in pfSense it's definitely asymmetric.
https://docs.netgate.com/pfsense/en/latest/troubleshooting/asymmetric-routing.html

You should remove the asymmetry anyway, it will bite you at some point.
Put the WAN2 gateway device in a separate transport subnet so all traffic passes pfSense.

Steve