WAN failover

follet · October 2020

Hello.

I have ZyXEL ZyWALL USG100. I have two ISP independent connections: WAN1 and WAN2. I've set-upped trunk between them, see screenshot below, but unfortunately, when I disconnect WAN1, connection doesn't switch to WAN2.

Maybe I lost something to setup?
Any suggestions?

Thank you, Konstantin.

Image: https://us.v-cdn.net/6029482/uploads/editor/ur/w5rpkawajkf2.png

Zyxel_Emily · October 2020

Hi @follet,

Here are some useful discussions for your reference.

https://businessforum.zyxel.com/discussion/4755/wan-failover-data-usage

https://businessforum.zyxel.com/discussion/2743/wan-failover

follet · October 2020

Hello @Zyxel_Emily.

I read this articles. As for second link, I can't find feature "Disable policy route automatically while Interface link down" when I set-up route rules for LAN1 -> WAN1 and LAN1 -> WAN2. And I can't find healthy check feature. In my case WAN1 has Static IP, and WAN2 - DHCP.

I set-upped Connectivity Check and I see in log correct record: wan1 ping check is successful. Zone Forwarder adds DNS servers in records.

So I applied all changes (without set-uping policy routing) but it doesn't affect. When I disconnect WAN1.

follet · October 2020

I tried to set-up my zyxel like on the article: https://kb.zyxel.com/KB/searchArticle!gwsViewDetail.action?articleOid=003074&lang=EN
and article: https://support.zyxel.eu/hc/en-us/articles/360001378653-WAN-Failover-on-a-USG-with-Policy-Routes - where I can't find healthy check block.

What can I re-check?

follet · October 2020

@Zyxel_Emily Does it mean that Disable auto = Disable policy route automatically while Interface link down like on my screenshot?

Image: https://us.v-cdn.net/6029482/uploads/editor/ys/i5ufsa3f75p9.png

follet · October 2020

hm... it works after reboot zyxel...

PeterUK · October 2020

follet said:

Hello @Zyxel_Emily.

I read this articles. As for second link, I can't find feature "Disable policy route automatically while Interface link down"

next hop must not be set to auto select interface and then WAN1
when adding a route rule click show advanced settings and scroll to the bottom.

Going by my Zywall 110 and VPN300 are how you see then settings so might be different on given models or old firmware.

Zyxel_Emily · October 2020

Hi @follet,

After user defined wan trunk is configured, select it as “Default WAN Trunk”.

Image: https://us.v-cdn.net/6029482/uploads/editor/5l/a12qpsxw6j94.jpg

Go to Network > Interface > Ethernet > wan1 & wan2 to enable connectivity check with valid IP address.

Set small values to trigger failover more quickly.

With all settings above, when wan1 is disconnected, the traffic will go through wan2.

Image: https://us.v-cdn.net/6029482/uploads/editor/qg/rqko2rm8j75v.jpg

follet · November 2020

Thank you for answers. It was temporary bug, fixed by rebooting my zyxel.
Topic can be closed.

WAN failover

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