Router (cpu usage(single port vs multiport))

Soogs · 22 Nov 2021 at 18:58

Hi all
I have a Ubiquity ERX
Is performance impacted by the number of switch ports I use on the ERX?
would I be better off connected to a switch and then spurring off from there or just connecting each switch to the ERX?

ChrisD. · 23 Nov 2021 at 09:05

I'm pretty sure that the ER-X runs the switch ports in software and you'll get pretty poor performance compared to just connecting it to a cheap unmanaged 1 Gbps switch and connecting the clients off that.

Soogs · 23 Nov 2021 at 09:10

so in addition to running of a single port, I want to take that port out of the software switch
got it! thanks!

ChrisD. · 23 Nov 2021 at 09:13

1 port for the WAN, 1 port to a switch. Can't remember with the ER-X specifically what to do with the config.

Soogs · 23 Nov 2021 at 09:16

its all good i can sort the config out

WJA96 · 24 Nov 2021 at 05:20

Soogs said:
Hi all
I have a Ubiquity ERX
Is performance impacted by the number of switch ports I use on the ERX?
would I be better off connected to a switch and then spurring off from there or just connecting each switch to the ERX?

It doesn’t have switched ports, it has bridged routed ports so if you use it as a switch there is massive CPU overhead and it runs slowly. The extra ports are to have physically separate networks with the ER-X routing between them.

Soogs · 24 Nov 2021 at 21:49

WJA96 said:
It doesn’t have switched ports, it has bridged routed ports so if you use it as a switch there is massive CPU overhead and it runs slowly. The extra ports are to have physically separate networks with the ER-X routing between them.

I've disabled vlan aware and set an IP up for eth4 and only have that connected (and eth0 for wan)
that's the correct thing to do right?