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Download speed cut in half with EdgeRouter X

Scott216 opened this issue · comments

commented

When I setup my EdgeRouter X, my download speed went from 113 Mbps to 53Mbps. This is on a wired connection.

commented

I'd recommend visiting the Ubiquiti community site for EdgeMax.. there could be a number of issues, and the community there is very helpful. Ubiquiti EdgeMax Community Forum.

Properly configured, you should be able to get much better performance than that. Some of the issues that can cause slow performance are:

QoS, DPI, software bridging of interfaces (vs using the integral switch), HW NAT acceleration, etc

FYI, I have gigabit internet service and at first I only got about 300mbps with the ER-X, but after turning off DPI and QoS, and turning on HW NAT acceleration, I'm getting 800-900mbps.

Good luck!

commented

Thanks. I'll check out the forum. I have my edgerouter setup as instructed by the guide in this repo.

commented

The author has stated that they are not a network engineer. This config works for me, but I have 8mbps. I assume QoS is less important at higher speeds.

commented

I've had no issues getting a full 100M through the ERX with DPI and QoS enabled as specified by this guide. Do you have Config Tree -> System -> Offload -> hwnat enabled?

commented

@Scott216
Please re-read the following guide sections and follow links.
ER-X's are capable of about 800Mpbs total.

  1. EdgeRouter Enable HW NAT Assist
    Use section's link to Verify hwnat is enabled.

  2. EdgeRouter ER-X Speed
    Six links provided.

  3. EdgeRouter Enable Traffic Analysis
    Guide says: "This step will enable the EdgeRouter to perform Deep Packet Inspection (DPI) / Traffic Analysis. If you have any speed issues with your ER-X, then this may need to stay off."
    Turn Off.

  4. SmartQueue Setup
    Guide says: "Enabling QoS may disable the hardware acceleration that was enabled in section 32 - EdgeRouter Enable HW NAT Assist."
    Turn Off.

Also check that eth0 is not sensing / locked at 100Mbps. Eth0 should be green at top of dashboard screen.

Also try a new / different Ethernet cable between Cable Modem and ER-X eth0, even if you think the existing cable is fine.

To test for an ERX duplex mismatch, you can temporarily add a new gigabit hw switch between the cable modem and erx's eth0 as a test. Check for green. Ensure that only those two items are connected to this temporary switch.

-Mike

commented

Thanks Mike. I'll let you know how it turns out.