OpenWrt Link Aggregation (bonding)

Installing and Using OpenWrt
1

What do I need to achieve link aggregation in openwrt? TP-Link Archer C50 v4

The switch chip internally connected to cpu with 1gbps link, but eth ports are 100mbit. I need 200mbit throughput, so I think to bond 2 ports in one into "1000baseT" link with expected speeds of 200mbit. I need it for wifi 5ghz

On the otherside I have Mikrotik CRS210 with bonding prepared

2

200mbit is 100mbps full duplex.

3

yeah but these ports are 100mbps full duplex already

4

Just to be clear, no single connection will ever exceed 100 Mbps.

I think the user was suggesting you consider the WiFi will be consuming a (possible) total of 800 Mbps bandwidth thru the CPU (if this succeeds).

Have you reviewed the documentation or threads on the forum yet?

5

On top of that:

  • very few targets have hardware offloading bonding/ LAGG support (I'm not aware of any)
  • there is also the performance of the CPU for the internal switch to consider
  • only very powerful targets (x86_64) have the raw performance to profit from software based bonding
    • mt7628 with only 100BASE-T ports certainly does not

The sensible solution would be to buy a (second hand?) router with

  • native 1000BASE-T (or 2.5GBASE-T) ports
  • and the performance to actually route at those speeds (e.g. filogic, maaaybe ipq807x/ ipq60xx/ ipq50xx (if you don't need to go quite the full 1000 MBit/s); x86_64 is always an option for top performance)

You are asking too much from this very-low end device, while much better (1000BASE-T ports, even if the routing performance couldn't quite fill that out) was the norm ~15 years ago already.

6

Thats why im moving to x86 OPNsense abd making that tplink dumb wifi ap

7

This also/ already applies to 'just' AP usage, as the 5 GHz radio in your router is ~3 times faster than the ethernet side you need as wired backhaul to your router. This device is just mis-designed from the factory, coupling a 802.11ac radio with 100 MBit/s ethernet ports only (it might have been excusable for 802.11n, but not for 802.11ac).

8

There's funny story behind my tplink trash. I bought it in 2019 to replace my malfunctioning ADSL router provided by ISP. After it arrived, I realized WAN port is not rj11, thus not compatible. Back then I didnt know anything about networking.

Then I used onpar with Huawei ONT as wifi ap, cuz huawei got only 2.4ghz wifi and i have 100mbit up/down fiber.

Then I flashed openwrt, to find out it has only 8mb flash making it practically useless for anything serious.

Now I got Mikrotik CRS210, just to realize it doesnt have VLAN filtering hardware offload (but CPU might be enough for 1gbps).

9

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