2 ports on XG-7100U act as one interface

LamboJ

I currently have an XG-7100 1U, and I have 2 switches, each plugged into an sfp+ port on the pfsense device, that I'd like to effectively act as redundant backup switches for each other. This might be a dumb question, but outside of bridging the 2 ports (which I understand is high discouraged on this forum), is there any way to have them both on the same subnet/iprange/interface? If not, are there are any other suggestions other than bridging?

Thanks,
Lambo

stephenw10

If they are stackable switches you can probably setup the two ix ports as a lagg with one to each switch. That gives you multiple levels of redundancy.

https://en.wikipedia.org/wiki/MC-LAG

Steve

LamboJ

@stephenw10 Unfortunately, they're not stackable switches

stephenw10

What switched are they? They can do LACP?

LamboJ

@stephenw10 One is an Aruba S2500, the other is a Quanta LB6M

heper

@stephenw10 said in 2 ports on XG-7100U act as one interface:

What switched are they? They can do LACP?

is it possible from GUI to setup a lacp "triangle" between pfsense and 2 switches ? i've never attempted it myself, but i'm sure you or any of your collegues has (tried)

edit: you'd need spanning tree in the mix also i guess

stephenw10

Not with LACP. As far as I know the switches need to be 'stacked' in order to have lagg links split across different physical units.

You could connect everything to everything else and rely in spanning tree to prevent a loop. But....
That also means bridging the ix ports in pfSense.

I would consider an LACP lagg from the 7100 to the first switch and a second lagg from that switch to the other switch.
It won't help if the first switch fails entirely but you would have port/cable redundancy between everything.

Steve