USG700 Bridged WAN interface how to setup trunk

PlusAuto

Hello,

We have a USG700 with bridged WAN interface (BR1) on ports GE1 and GE2.
There is a dual fiber uplink from our ISP we bridged the interface.
This how it looks

Then we setup a WAN TRUNK but i`m not really sure if its needed and if needed how to properply set this up.

We have setup the trunk with only one member (BR1) and is set to active.
Or should we add GE1 and GE2 as members?
If so then we should probably undo the bridged wan interface?

Any thoughts on this?

Note : Everything seems to be working fine.

PeterUK

interesting way you set it up so you only get one WAN IP?

or if you set ports without a bridge do you get two WAN IP's? do you have a subnet of WAN's IP's?

PlusAuto

We have 1 main IP adress that is set on the bridge interface. After that we assign servers an own external IP with SNAT rules, this in our subnet of WAN ip`s

PeterUK

So if you do a packet capture on Ge1 and Ge2 do you send like ICMP or TCP SYN out each interface when you send one?

or have you tested removing Ge1 that Ge2 take over and the other way round?

PlusAuto

Well it seems that one interface does all the work

GE2: .CAP file contains entries.

55 packets captured
77 packets received by filter
0 packets dropped by kernel

GE1: .CAP file contains no entries.

0 packets captured
2 packets received by filter
0 packets dropped by kernel

PeterUK

So if you unplug Ge2 that GE1 takes over?

PlusAuto

That is how it normally works yes, i can not test it at the moment as the site is 1 hours drive away

PeterUK

I'm also thinking what about a LAG instead of a bridge?

PlusAuto

Im not really sure , i never used LAG.
I thought a bridge setup is kind of the same?

PeterUK

well your setup works so should be fine