BT10 Dual Wan DHCP Failure

[DelJohnson]

BT 10, attempting to use dual WAN.

10 GBE port will not get IP address from either of my ISPs in dual WAN mode.

In single WAN mode, both ISPs work individually in either the 1GBE port or 10GBE port.

Priority WAN doesn't change anything.

The 10GBE port works in dual WAN mode with a static IP.

Looks like a software problem with the router.

Ideas?

[jzchen]

I believe the key is that both ports can not be the same type, so one must be WAN and the other LAN, (or USB).  Did you try the (10 GbE) LAN and WAN/LAN (1 GbE) ports, or both WAN/LAN (1 GbE) and WAN/LAN (10 GbE)?

https://www.asus.com/us/support/faq/1011719/

[DelJohnson]

The link you provided does not show the BT 10 dual WAN selections.

You cannot select the same port on the BT 10 for dual WAN.

I have selected the correct, separate WAN ports.

[DelJohnson]

ASUS broadcasts DHCP requests on all interfaces. This is incorrect behavior. 

[jzchen]

It may be a defect, or it may be by design that the two ports are both "WAN/LAN".  I have read of at least one other post on a forum that noted new firmware caused an issue with Dual WAN.  Here's ASUS' documentation on the subject just in case you haven't already read it:

https://www.asus.com/us/support/faq/1011719/

It makes no mention of dual function "WAN/LAN" ports but notes that both ports can not be the same, ie both WAN or both LAN...