Dual Wan issues

[fbreve]

I'm using version 378.50. My second ISP was installed today. I can't get Dual Wan to work.

Both ISPs are working just fine, but when both are connected, devices connected to the router won't have any connection. The router still pings Internet addresses just fine but the devices connected to it will lose all their access, except for ongoing connections. If I drop one of the ISPs connection, the devices will get access again.

The only error I see in the log file is:
Chain FUPNP not found

Both ISPs are using PPPoE. One of them is connected to WAN, the other one is connected to LAN4 (as second WAN).

I was trying Load Balance, but Failover doesn't work either.

 

[L&LD]

Have you tried rebooting all your network devices? Including the modems?

 

[john9527]

Did you configure dual WAN before or after making both WAN physical connections? I think people have had better success if both ISP connections are up and connected before doing the dual WAN configuration.

For the FUPNP error, make sure UPnP is enabled on the main WAN tab.

 

[fbreve]

Have you tried rebooting all your network devices? Including the modems?

Yes. I did.

 

[fbreve]

Did you configure dual WAN before or after making both WAN physical connections? I think people have had better success if both ISP connections are up and connected before doing the dual WAN configuration.

For the FUPNP error, make sure UPnP is enabled on the main WAN tab.

After making the physical connections.

I tried downgrading to the previous firmware.

I tried restoring factory defaults, then it worked. But as I was configuring stuff it stopped working again. Maybe something related with virtual servers (port forwarding).

I'm giving up. Asus failed on Dual Lan. I'll look for a specific load balancer. TP-Link TL-R470T+ v3 seems fine, even though it's not Gigabit. I don't think I'll have Gigabit Internet anytime soon anyway.

 

[Alfsu]

Don't give up, there is hope!

I'm giving up. Asus failed on Dual Lan. I'll look for a specific load balancer. TP-Link TL-R470T+ v3 seems fine, even though it's not Gigabit. I don't think I'll have Gigabit Internet anytime soon anyway.

My router has a load balanced dual wan configuration with main using PPPoE to ISP1 and secondary with static IP on LAN4 to ISP2, plus a tunnel connection using one VPN client, and it all works.

After connecting the dual wan try waiting for 5 to 10 minutes and reboot all devices behind the router, or manually flush their dns cache.

 

[fbreve]

I left the router with the dual wan configuration for hours. Then I would start a new device, it gets an IP through DHCP, but it can't even ping anything, except for the router.

DNS shouldn't be an issue. I even tried pinging known IPs.

It's something in the Asus routing table. It has accessibility itself, but it's not routing the packages from the devices connected to it.

 

[Alfsu]

With dual wan enabled the router will create tables 100 and 200 in addition to table main and default, and no customization should be made using these tables, other than for reference.

 

[fbreve]

I tried again. It failed again. Here is some info I've collected on routing table:

Routing table with single WAN:

Destination Gateway Genmask Flags Metric Ref Use Iface
10.95.2.2 * 255.255.255.255 UH 0 0 0 WAN
192.168.2.0 * 255.255.255.0 U 0 0 0 LAN
default 10.95.2.2 0.0.0.0 UG 0 0 0 WAN

Routing table with dual WAN:

Destination Gateway Genmask Flags Metric Ref Use Iface
201.92.100.201 * 255.255.255.255 UH 0 0 0 WAN
10.95.2.2 * 255.255.255.255 UH 0 0 0 WAN
192.168.2.0 * 255.255.255.0 U 0 0 0 LAN
192.168.1.0 * 255.255.255.0 U 0 0 0 MAN
default 10.95.2.2 0.0.0.0 UG 0 0 0 WAN

The terminal version:

fbreve@RT-AC68U-F640:/tmp/home/root# route
Kernel IP routing table
Destination Gateway Genmask Flags Metric Ref Use Iface
201.92.100.201 * 255.255.255.255 UH 0 0 0 ppp1
10.95.2.2 * 255.255.255.255 UH 0 0 0 ppp0
192.168.2.0 * 255.255.255.0 U 0 0 0 br0
192.168.1.0 * 255.255.255.0 U 0 0 0 vlan3
127.0.0.0 * 255.0.0.0 U 0 0 0 lo
default 10.95.2.2 0.0.0.0 UG 0 0 0 ppp0

fbreve@RT-AC68U-F640:/jffs# traceroute 201.92.100.201
traceroute to 201.92.100.201 (201.92.100.201), 30 hops max, 38 byte packets
1 201-92-100-201.dsl.telesp.net.br (201.92.100.201) 23.748 ms 21.609 ms 21.085 ms
fbreve@RT-AC68U-F640:/jffs# traceroute 10.95.2.2
traceroute to 10.95.2.2 (10.95.2.2), 30 hops max, 38 byte packets
1 10.95.2.2 (10.95.2.2) 3.256 ms 3.970 ms 4.023 ms

Swapping the two ISPs:

Destination Gateway Genmask Flags Metric Ref Use Iface
201.92.100.201 * 255.255.255.255 UH 0 0 0 WAN
10.95.2.2 * 255.255.255.255 UH 0 0 0 WAN
192.168.2.0 * 255.255.255.0 U 0 0 0 LAN
192.168.1.0 * 255.255.255.0 U 0 0 0 MAN
default 201.92.100.201 0.0.0.0 UG 0 0 0 WAN

 

[Alfsu]

I tried again. It failed again. Here is some info I've collected on routing table:

The point I was trying to convey was that if there is any custom routing scripts, tables 100 and 200 are not to be used.

Take a look at the output of the ip rule command, it may shed some light as to why the traffic is not being routed.

 

[fbreve]

I think I finally found the problem. I was trying to enable load balance again and the same problem appeared.
So I tried disabling the Port Trigger feature and it immediately worked.
Then I enabled Port Trigger again, still working, it stops working.

So, at least here, load balance only works when Port Trigger is disabled.

Firmware bug, maybe?