Hi,

I have two WAN Interface. I make load balance for that on pcc method. It works fine. Some time some of my clients making complain that internet is slow. I went to customer side. I saw, ping time and all everything is fine. But really the internet is slow. I am not sure, how could I solve the issue. If anyone could help me, I will be grateful to him. Thanks in advance.

Here is my load balance scenario.
I have to WAN interface

WAN1--
VLAN1-Internet (15 Mbps)--172.16.16.2/30
VLAN2-Youtube (15 Mbps)--172.16.16.6/30

WAN2--
Internet (25 Mbps)--192.168.13.2/30

LAN--192.168.255.1/24 (LAN have several sub nets)

Now I tried the following mangle rule---

/ip address
add address=192.168.255.1/24 network=192.168.0.0 broadcast=192.18.255.255 interface=Local
add address=172.16.16.2/30 network=192.168.1.0 broadcast=172.16.16.3 interface=WAN1
add address=192.168.13.2/30 network=192.168.2.0 broadcast=192.168.13.3 interface=WAN2

/ip dns set allow-remote-requests=yes cache-max-ttl=1w cache-size=5000KiB max-udp-packet-size=512 servers=8.8.8.8

/ip firewall mangle
add chain=input in-interface=WAN1 action=mark-connection new-connection-mark=WAN1_conn
add chain=input in-interface=WAN2 action=mark-connection new-connection-mark=WAN2_conn

add chain=output connection-mark=WAN1_conn action=mark-routing new-routing-mark=to_WAN1
add chain=output connection-mark=WAN2_conn action=mark-routing new-routing-mark=to_WAN2

add chain=prerouting dst-address=172.16.16.2/30 action=accept in-interface=Local
add chain=prerouting dst-address=192.168.13.2/30 action=accept in-interface=Local

add chain=prerouting dst-address-type=!local in-interface=Local per-connection-classifier=both-addresses-and-ports:2/0 action=mark-connection new-connection-mark=WAN1_conn passthrough=yes
add chain=prerouting dst-address-type=!local in-interface=Local per-connection-classifier=both-addresses-and-ports:2/1 action=mark-connection new-connection-mark=WAN2_conn passthrough=yes
add chain=prerouting dst-address-type=!local in-interface=Local per-connection-classifier=both-addresses-and-ports:2/2 action=mark-connection new-connection-mark=WAN2_conn passthrough=yes

add chain=prerouting connection-mark=WAN1_conn in-interface=Local action=mark-routing new-routing-mark=to_WAN1
add chain=prerouting connection-mark=WAN2_conn in-interface=Local action=mark-routing new-routing-mark=to_WAN2

/ip route
add dst-address=0.0.0.0/0 gateway=172.16.16.2/30 routing-mark=to_WAN1 check-gateway=ping
add dst-address=0.0.0.0/0 gateway=192.168.13.2/30 routing-mark=to_WAN2 check-gateway=ping

add dst-address=0.0.0.0/0 gateway=172.16.16.2/30 distance=1 check-gateway=ping
add dst-address=0.0.0.0/0 gateway=192.168.13.2/30 distance=2 check-gateway=ping

/ip firewall nat
add chain=srcnat out-interface=WAN1 action=masquerade
add chain=srcnat out-interface=WAN2 action=masquerade


Now tell me the problem. Sometimes its works fine. Sometime the customer making complains that the internet is slow. Could anyone tell me any proper suggestion that i can write on? I need smooth browsing for all of my clients. How could this will be done.

Thanks
Kawsar